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TuneLab Piano Tuner User`s Manual, version 4.0

1. DSO Steinway D have one by tapping on a folder to navigate down to that folder or a tapping on the button in the upper left corner of the screen to navigate up to the parent folder If you don t want to use folders to organize your tuning files you can just store all your tuning files in the root folder au Suppose you wanted to load the tuning file DSO Steinway D Just tap on that name and the tuning file will load While navigating the folder hierarchy you can delete tuning files and empty folders by swiping from right to left through the item you want to delete If you want to delete a folder you must delete all the files in that folder first You can also move and rename files from this list by touching and holding the file for two seconds as described later TuneLab Piano Tuner for iOS 31 version 4 0 March 2014 Saving Tuning Files When you tap on Save Tuning As in the Files menu a screen like the one on the left appears If you want to save the current tuning in the folder indicated in this case the root of the file system just enter the Save tuning in root new name of the tuning file and tap on Save here If you want to save the tuning in some other folder tap on Cancel Then you will see a prompt 7 like the one on the nght Tap on Save Save Tuning ee ee a ave tuning in different folder see a list of files and folders similar to the one shown when loading a tuning file As
2. A normal TuneLab tuning is based on a smooth stretch function that changes gradually from AO all the way up to C8 But a Split Scale tuning is based on a function that abruptly changes at the break Above the break the tuning is normal making it a blend of competing criteria But below the break the Split Scale tuning switches abruptly to satisfy just one criterion the 6 3 octave Ensuring that the 6 3 octaves are perfect may compromise some other tuning goals such as uniformly progressive thirds and tenths But the thought is that for these pianos the beatless 6 3 octaves are the only achievable goal If you are considering using Split Scale tuning measure the inharmonicity on both sides of the break Ifthe inharmonicity jumps by more than double 1t might be a good idea to use Split Scale tuning A high quality well scaled piano normally will not have such a large change in inharmonicity at the break so Split Scale tuning is normally considered only for lower quality pianos especially spinets However there are exceptions Some spinets have a surprisingly smooth inharmonicity change through the break And some grands like the Yahama GH 1 have quite a bad jump in inharmonicity So it is best to decide to use Split Scale tuning only after evaluating the inharmonicity for the specific piano at hand Triggering Split Scale If you have decided to try Split Scale tuning here is how to do it Measure inharmonicity as you normally would either
3. 0 647 A5 1 920 A6 5 453 Split Scale Indicators il Carrier 10 31 AM When a Split Scale tuning is Lal m in effect the main tuning MOLA toe Gio page will have a display with a yellow background sy as shown on the left The 43 field where this is displayed ce is also shared with the Paec rarely used custom offset T 7 eee So the Split Scale indicator 5 m m will not be seen if there matn happens to be a custom a oy yg 4 Offset for the current note oom You can also see that Split Scale is in effect by looking 415 at the tuning curve as shown ny on the right A vertical line gt ai will be drawn through the linea ha tuning graph and the st eeers essere sah ee tae deviation graph at the break if Split Scale is in effect You will also notice that the left side of the deviation graph is a flat line That is consistent with the fact that Split Scale produces perfect 6 3 octaves below the break at the expense of everything else Intervals Other Than 6 3 in the Bass It 1s strongly recommended that when you use Split Scale tuning you also use the 6 3 bass interval in the tuning curve adjuster But if you should decide to pick a different interval for the bass here 1s what TuneLab will do TuneLab will create a blend between the interval you select and the 6 3 octave in the bass Starting at the highest notes in the bass the 6
4. Over pull tuning mode compensates for this change by setting the pitch target a calculated amount beyond the desired pitch In this way the settling that occurs as later notes are tuned will leave the notes right where you want them In many cases using just one pass with over pull tuning can take the place of tuning the piano twice And even if you do use two passes doing the first pass in Over pull mode will leave the piano closer to the correct pitch than if you hadn t used that mode and thus the second pass will be easier Measuring Inharmonicity Before an Over pull When over pull mode is activated TuneLab will not let you measure inharmonicity Therefore if you want to create a custom tuning for the piano as described in the Chapter 2 you would have to measure the inharmonicity and adjust the tuning curve before enabling over pull mode For small pitch raises the normal inharmonicity measurements will be sufficient However for larger pitch raises the act of pulling the string up to pitch will change the inharmonicity of the strings For such pitch raises it is not worthwhile to measure inharmonicity first Just load the Average tuning file which comes packaged with TuneLab or a generic tuning file from a similar model piano Then do a pitch raise pass using that tuning When you do the second pass start over with a new tuning file and take fresh inharmonicity readings Only the final pass would need to have custom inharmonicity measurements tak
5. based on the selected intervals of 6 3 octaves in the bass and 4 1 double octaves in the treble See the next chapter for more information on how the tuning curve is adjusted particularly if you want to change the default settings Saving the Tuning File After all inharmonicity measurements have been made and the tuning curve has been adjusted if necessary exit from the tuning curve adjuster by tapping the tuning button in the upper left corner of the screen If you want to save this tuning file for later recall now would be a good time to do so although saving the tuning file is not necessary for tuning Save the tuning file by using the Save tuning as item in the Files menu Assign a name to the file that so that you can recognize it in a list of other tuning files If you are tuning a lot of new pianos of the same make and model you may decide to keep only one tuning file that you use for all pianos of that same make and model If you have the time it is best to measure inharmonicity and adjust a tuning curve for each piano However new pianos of the same model do not vary that much for all but the most critical uses a generic tuning may be acceptable Beginning to Tune the Tuning Sequence Now that you have a custom tuning for this piano and perhaps have saved the tuning file you can turn your attention to actually doing the tuning Because aural tuning always starts by setting a temperament an aural tuning sequences starts in the midd
6. case you can either try a different note or do without that particular measurement The measurement results screen shows a lot of data but the most important measurement is the inharmonicity constant The graph in Chapter 1 shows the typical pattern of inharmonicity constants from a Kawai 68 grand Other pianos may have more or less inharmonicity but the pattern should be approximately the same Knowing the typical inharmonicity pattern will help to recognize and discard obviously bad readings After you tap on Save to save the mnharmonicity measurement and if an automatic measure sequence is defined TuneLab will automatically switch to the next note in that sequence You still will have to start the measurement by tapping on the measure button but at least the note will be selected automatically See Edit Measure Sequence in the Settings to select which notes you would like to measured for inharmonicity whenever a new tuning is started Adjusting the Tuning Curve Now that the inharmonicity readings have been taken for several notes TuneLab can form a model for the inharmonicity of all the notes of the scale not just the notes that you measured Using that model TuneLab can predict how various intervals will sound Using that model you want the tuning curve to be adjusted to match the inharmonicity For now we will assume that you are using the default configuration where the tuning curve is adjusted automatically and the adjustment is
7. charger overnight while calibration 1s running Ifa interruption like a phone call or text message should occur before the six hours are over the calibration will be aborted and you will have to start the calibration over again from the beginning The Internet calibration screen is show on the right Just follow Pe Calibration e the prompts on the screen Revert to default calibration erases oe any existing calibration returning your device to the default TO start a calibration you must have calibration it had when TuneLab was first installed The light nternet access and be able to leave i your device on charge and running colored bands at the bottom of the screen show diagnostic data for 6 hours If this process is during the process In particular the first four lines of diagnostic interrupted before 6 hours it must data show the Internet round trip time for the time server queries be restarted from the beginning Internet time servers are queried briefly once at the beginning of Begin 6 hour the six hour calibration period and once more at the end Internet Calibration Calibration access can be either by wi fi or by a cellular data plan After BE starting the calibration by tapping on Begin 6 hour Calibration do not turn off the device since this process cannot run in background After the calibration is done there will be one final prompt asking if you want to adopt the calibration that was just determined This prompt can b
8. green bands in the background Swiping your finger up or down in those bands will adjust one of the four aspects of the tuning curve The left most and right most bands adjust the overall stretch in the bass and the treble The middle two bands adjust the shape of the tuning curve in the bass and the treble This kind of adjustment gives the most flexibility but it 1s the most tedious especially if you don t know what you want to do to the tuning curve It is preserved for historical reasons but is hardly ever used In semi automatic mode only the inner two adjustment bands are active That is because the overall stretch in the bass and the treble is being adjusted automatically so the outside green bands that control those adjustments are removed As with full manual mode you adjust the shape of the tuning curve by swiping up or down in the appropriate green band In the semi automatic mode TuneLab will adjust the overall stretch to make the deviation curve described below read zero at AO and C8 The fully automatic mode shows a solid green background In this mode just one tap anywhere in that background will cause all four aspects of the tuning curve to be adjusted automatically As with semi automatic mode TuneLab will adjust the tuning curve overall stretch to make the deviation curve read near zero at the low and high extremes of the scale In addition it will adjust the shape of the tuning curve to make the deviation curve as flat as poss
9. it is easiest to just start over from the beginning because the process is so short Here is what the display looks like when you first start the pre measurement TuneLab wants you to play the selected note After you play the selected note and TuneLab has captured its pitch then the display will change to the next picture Here you see the results of playing C1 186 3 cents In addition TuneLab is now instructing you to play El In this example we have configured the over pull pre measurement to sample just the notes of a C major arpeggio You can also configure it to sample all white notes or every note chromatic scale Sampling every note gives a more accurate picture of the pre tuned state of the piano but it also takes four times longer than sampling only the notes from a C arpeggio Ifyou think the piano is close to being in tune with itself sampling only the C arpeggio notes is probably sufficient If you need to pause the pre measuring process just do a swipe gesture from the current note display to the left just as if you were turning off auto note switching The display will look like the one shown on the right In this paused mode you can select different notes to n coe 165 8 review what their pre measurements were and to make TuneLab back up When you are ready to resume pre measuring just do a swipe gesture from the current note to the nght Over pull paused and repeat an earlier pre
10. measurement that you think may be faulty Over pull Tuning tuning in over pull mode by selecting AO The display will look like this The calculated over pull offset is shown next to the current note display In this example the calculated over pull would have been more than 20 cents but it is being limited to 20 cents by the safety limits in effect You can tell that from the color of the background Whenever a safety limit is causing the over pull offset to be limited that offset will be displayed with a pink background as areal ee shown above If the over pull offset 1s low enough to avoid the safety limit it will AO eens appear with a white background as shown in the next picture You may now tune the piano normally except that you should tune straight from AO to C8 tuning unisons as you go and each note will have an over pull offset added on to it You should tune unisons as you go because TuneLab assumes that you do that when it calculates the over pull offset 20 0 After the last pre measurement has been made TuneLab automatically switches to o m You can turn off over pull mode by tapping on the stop button red stop sign To resume over pull tuning to to the Over pull section of the Settings menu and tap on the Begin over pull tuning button TuneLab Piano Tuner for iOS 24 version 4 0 March 2014 How Over pull is Calculated You do not need to understand the exact formula for over pull
11. not automatically select that temperament into the current tuning If you want to select your newly created temperament into the current tuning you have to select it explicitly yourself TuneLab Piano Tuner for iOS 30 version 4 0 March2014 Chapter Working with Tuning Files 8 It is possible to use TuneLab without ever saving a tuning file Just make a new tuning for every piano you tune But if you tune the same piano regularly you can save time by saving the tuning file for that piano If you save the tuning file then the next time you tune that piano or some piano that is very much like it you can skip the initial setup of measuring the inharmonicity You will be able to proceed directly to tuning Even if it is not the same exact piano you may want to use a tuning file from a similar make and model piano Loading Tuning Files To select an existing tuning file tap on lt Tuning Tuning Files Help Load tuning file in the Files menu samples from the main tuning screen This will TCurve 1 93 bring up a display like the one shown on Tenba the right You have the option of Average 348 84 Hz Auto up ae i organizing your tuning files into folders If there are any folders in the current folder they will appear with the light yellow background as shown for Samples and Yamaha in the example St John s Kawai You can navigate up and down through the file system hierarchy if you Files TuneLab Help Avera Yamaha
12. recently deposited a tuning file into your Dropbox by some other means than writing it from TuneLab running on your device and if you expect to need access to that file at a time when Internet access is not available all you have to do is open that file once when you do have Internet access After that a copy of the file will be in the Dropbox cache on your device and you will be able to access it from TuneLab whether or not the Internet is available TuneLab Piano Tuner for iOS 33 version 4 0 March 2014 Dropbox Operations You can switch back and forth between Dropbox and local file storage at any time One way to transfer a file from one file system to the other is to load the file from one file system switch to the other file system and then do a Save As in that other file system This is fine if you only want to transfer one file But it could get tedious if you wanted to transfer many files this way In particular if you already have a large number of tuning files stored locally on your device you can copy all of them all at once to Dropbox Just tap on Dropbox operations in the Files menu Then tap on Copy local files to Dropbox This can only be done when TuneLab 1s in the cloud file storage mode The other operation available under Dropbox operations is Unlink from Dropbox account The only real purpose of this function is to enable you to change which Dropbox account is in use Normally the first time you use Tun
13. the overall pitch of a piano by a significant amount you will find that the notes that you tune first will not stay where you put them by the time you are done tuning This is due to the interaction of the string tensions primarily through the bridge and soundboard and the flexing of the plate When an entire section of notes is raised in pitch the result is that the notes that were tuned first will tend to drop in pitch after you tune them Even the notes that you tuned last will drop somewhat due to the delayed settling of tension in the wire Over pull tuning mode compensates for this change by setting tuning targets that are a calculated amount beyond the ultimate desired pitch By anticipating this drop in pitch the notes will end up closer to where you want them In many cases using just one pass with over pull tuning can take the place of tuning the piano twice Over pull mode accomplishes this goal by pre measuring the pitch of the piano before you start tuning This process is described in detail in the chapter on over pull mode Calibration TuneLab should be calibrated before you trust its absolute pitch Without calibration TuneLab assumes a nominal crystal oscillator frequency in your phone s sound system and makes all pitch calculations from that assumption By doing a calibration you are refining that nominal value based on a comparison to a trusted pitch source You can do a rough calibration using a tuning fork but a better calibrati
14. the right This has the effect of pushing the end of the turning curve up to match the pitch for A7 while also pushing the middle portion of the tuning curve down to match the pitch of G6 Adjust for the best possible match by making the graph overlay the red marks that represent custom offsets Deviation Curve 4 0 In order to understand how the tuning curve 1s adjusted automatically or ee manually we first have to examine the deviation curve which is the graph p shown below the tuning curve The deviation curve is divided into a left ie and a right portion The left portion shows the effect of the tuning on the 2 0 interval selected for the bass and the right portion shows the effect on the 3 0 interval selected for the treble The bass and treble intervals are 7 selected by tapping on the interval select button shown on the right This particular display _ indicates that the treble interval is the 4 1 double octave and the bass interval is the 6 3 single Wo 4 octave Using the intervals shown 4 1 and 6 3 the left portion of the deviation curve would show how wide or narrow the 6 3 octaves are in the bass A positive number of cents means wide and a negative number means narrow In the bass portion each interval is specified in the graph by the left most note in that interval So for example the left most portion of the deviation curve says how wide or narrow is the 6 3 octave formed by AO and A1 Similarly
15. the right portion of the deviation curve would show how wide or narrow the 4 1 double octaves are in the treble In this case each interval is specified by the right most note of that interval Therefore the TuneLab Piano Tuner for iOS 17 version 4 0 March 2014 right most portion of the deviation curve says how wide or narrow is the 4 1 double octave formed by C6 and C8 Common selections for bass and treble intervals will generally give these results e 6 3 in the bass low to moderate bass stretch 8 4 in the bass higher bass stretch e 4 1 in the treble moderate treble stretch 4 2 in the treble higher treble stretch 2 1 in the treble low treble stretch The graph shown above is the deviation curve for a particular piano and tuning curve The selected intervals were 6 3 in the bass and 4 1 in the treble It was adjusted in the fully automatic adjustment mode As we said before this causes the deviation curve to be near zero at the extreme ends of the scale and to be as flat as possible in the vicinity of those extremes In this case we see that is so Reading from that graph we can see that for this particular tuning of this particular piano e The 6 3 octave A0 A1 is wide by about 0 8 cents e The 6 3 octave C1 C2 is nearly perfect e The 6 3 octave F1 F2 is narrow by about 0 7 cents e The 6 3 octave C3 C4 is about 1 6 cents wide e The 6 3 octave C 4 C 5 is narrow by about 1 5 cents e The 4 1 double octave D2 D4 i
16. this screen you can switch on the Exam Capture Mode In this mode the main tuning screen will Exam capture mode on show a status box on the right side of the current note display as shown in the box on the right The offset in View Old Reports cents shown in that box is the offset that will be recorded for that note This offset is rounded to the nearest 0 1 cents as specified by the PTG Also in the Exam Capture Mode the partials for each note are no longer adjustable The partials are forced into the selection specified by the PTG for the Tuning Exam Generate Report This captured offset can be modified by adjusting the custom offset for the current note by first adjusting the Offsets That includes swiping through the Phase Display for manual offset adjustment or using Locking Mode for automatic adjustment Whenever a non zero main offset is showing in indicates that an offset is pending but not yet transferred to the custom offset for n the current note The transfer can take place using the methods described in background That will instantly transfer the main offset to the custom offset for the current note and at the same time turn the status box background to green indicating that there no longer is any pending offset that not only capture the offset but will also turn off Locking Mode All this is done to streamline the process of capturing a master or examinee s tuning After the entire tuning
17. to take advantage of over pull mode TuneLab performs the calculation automatically based on all the pre measurements and on the setting of the over pull parameters There is no longer any running average of pre measurements done during tuning as found on earlier versions of TuneLab Instead each individual pre measurement contributes to each individual over pull amount with a proprietary formula This means you do not have to worry about pre measurements while you are tuning nor do you have to worry about auto note switching interfering with pre measurements Ifa note is too far off pitch to trigger auto note switching just start tuning it closer its correct pitch and TuneLab will switch to it when it comes into range of the correct pitch Over pull Options There are several settings that you can change which affect how over pull operates These options are changed from the Over pull page in Settings as shown here Tap the Start button to start the pre measuring process from the beginning discarding any pre measurements that have already been made Tap on Resume to continue continue pre measuring after an interruption keeping any existing pre measurements Tap on Begin over pull tuning to switches to over pull tuning mode using whatever pre e N me SH ne N m o an Sl measurement have been made thus far Tapping on the buttons just explains the action of the nearby buttons Pre measure every note A0 C8 The
18. using one of the sample tuning files that came packaged with TuneLab you can also skip this initial setup and just load the desired tuning file and start tuning starting with Beginning to Tune below Initial Setup Begin by selecting New tuning from the Files menu button on the main tuning screen This will clear out all the tuning parameters that may have been in effect from the last piano you tuned This includes inharmonicity measurements tuning curve adjustments and any custom offsets or pitch raise pre measurements After selecting New tuning you should not see any tuning file name in the upper left of the screen Measuring Inharmonicity When creating a new tuning TuneLab needs to sample at least five notes for inharmonicity and preferably more You can measure whichever notes you want For example let s assume you want to measure C1 C2 C3 C4 C5 and C6 If you have an automatic measuring sequence defined then these notes may be selected automatically when you start a new tuning If you would like to change the automatic measuring sequence go to Edit Measure Sequence in the Settings If a particular note is hard to measure accurately because of serious false beats or lack of partials just measure some other nearby note instead When you measure the inharmonicity of a note you should mute all but one string of the note Measuring the inharmonicity of two or three strings sounding at once is not recommended To measure
19. 1 100 0 33 1 08 49 3 J 9 0 Rs 3 9 Ed 6 5 07 124 Te 4 0 Be 1 5 9 10 10 14 5 10 11 76 19 9 11 1 4 Tas 6 5 13 18 39 12 5 14 3 8 i aie 1 6 16 0 5 Save Save For note C2 Prior Avg 0 170 Delete Prior IH Con 0 169 Discard If you take several measurements of the same note then you will see a Partial Offset Amp results page like the one on 1 0 00 100 0 fFornote the left Here we see that a C5 the average of the prior 4 10 36 7 4 readings is 0 170 and that aa the current reading is 0 169 i ue which will be combined Ee on with the average thus far if k G you choose to Save it If 12 0 0 you decide that the current oi aoe oe en 0 0 IH Con reading is the only one that 15 1 0 0 798 you want to keep and you ras ae want to delete all prior readings for this note tap on bes mE ree the Delete Prior button TuneLab Piano Tuner for iOS 11 version 4 0 March 2014 An example of inharmonicity results for a higher note is shown above and to the right The higher notes have fewer partials that can be measured Here we see four partials that produce an inharmonicity constant of 0 798 On some pianos the higher notes may not yield an inharmonicity constant at all TuneLab needs the offset of at least two partials to calculate the inharmonicity Sometimes higher notes with poor voicing have such weak partials you don t get the needed two partials to measure inharmonicity In that
20. 3 interval will be optimized Then as you move lower in the bass the tuning will be a blend of the 6 3 and the interval you selected for the bass Finally at the lowest notes in the bass the interval you selected will be optimized You can see this effect by viewing the deviation curve with another bass interval selected TuneLab Piano Tuner for iOS 39 version 4 0 March 2014
21. Telephone Schedule The NIST standard frequency service is available by telephone by calling 303 499 7111 in Colorado This is a very popular number What you hear when you call this number is exactly the same as what is being transmitted by the NIST shortwave radio stations as mentioned above NIST reports that they get over two million calls per year In order to use these services effectively you need to know something about the schedule for this service The following schedule is followed each hour It shows what tones are present during each minute of the hour When a tone is present it is present for the first 45 seconds of the minute and it is silent for the last 15 seconds 0 10 20 500 30 40 500 50 1 600 11 600 21 600 31 600 41 600 51 2 440 12 500 22 500 32 500 42 500 52 500 3 13 600 23 600 33 600 43 53 600 4 14 24 500 34 500 44 54 500 5 600 15 25 600 35 600 45 55 600 6 500 16 26 500 36 500 46 56 500 7 600 17 600 27 600 37 600 47 57 600 8 18 28 500 38 500 48 58 500 9 19 600 29 39 600 49 59 Although the 440 Hz tone in minute 2 is tempting do not try to use it That pitch is only present for 45 seconds each hour The difficulty in calling at just the right time and the shortness of the tone make this choice inadvisable Instead you can use the 500 Hz and 600 Hz tones The telephone service wil
22. TuneLab Piano Tuner 1 What is TuneLab Piano Tuner basics and definitions of terms used in later chapters 2 Normal Tuning Procedure how to tune your first piano with TuneLab 3 The Tuning Curve what it is and how to adjust it 4 All About Offsets four different kinds of cents offsets used by TuneLab 5 Over pull Pitch Raise Tuning Procedure how to make a pitch raise more accurate 6 Calibration Procedure something you need to do only once when TuneLab is first installed 7 Historical Temperaments unequal temperaments for period music or for modern development 8 Working with Tuning Files how to select files amp folders for saving tunings 9 PTG Tuning Exam how to capture a master or examinee tuning detune and score the exam 10 Split Scale Tuning how to tune poorly scaled spinets 2014 Real Time Specialties March 2014 734 434 2412 version 4 0 www tunelab world com 10 15 21 23 27 30 31 35 38 What is TuneLab Piano Tuner for iOS Chapter 1 TuneLab is software that helps you to tune pianos This form of the software runs on 1OS devices Apple iPhone or Pad or iPod Touch with 10S 5 0 or higher It is available only through Apple s iTunes App Store TuneLab is also available on Android smartphones Android tablets and Windows laptops There are other manuals to describe these other forms of TuneLab and they can be found on our web site at tune
23. ano Tuner produces that pattern of offsets when put into the detuning mode as described later After the detuning has been accomplished the examinee may now tune the piano The third step is to record the examinee s tuning This is done in the same way as the master tuning was recorded The resulting tuning file should be saved under a name that identifies the examinee The fourth step is to create a grading report that compares the examinee s tuning with the master tuning This report is used by the tuning examiners as a basis for assigning penalty points and for aural investigation of discrepancies During these investigations the examinee is given the opportunity to demonstrate the correctness of his or her tuning through aural verification Based on these demonstrations the examiner may erase penalty points for some of the discrepancies to arrive at a final point score In addition to these comparisons there is also a separate evaluation of the examinee s ability to set the fundamental of A 440 to his or her own reference tone This evaluation 1s also included in the final assessment of the examinee s performance TuneLab Piano Tuner for iOS 35 version 4 0 March2014 Exam Capture Mode This mode of TuneLab Piano Tuner is used to record the master tuning and to record the examinee s tuning To enter this mode go the Settings and select PTG Tuning Exam You will see the Pre exam detuning OFF screen shown on the left From
24. by TuneLab on your phone It is stored as part of the TuneLab application and it is backed up by iTunes just as iTunes backs up all your application data You can organize your tuning files in folders if that makes more sense to you Once you have saved a tuning file that file can be loaded later to re establish the exact same settings you used the first time Here is what a tuning file contains TuneLab Piano Tuner for iOS 8 version 4 0 March 2014 The inharmonicity constants for all the notes that you measured The tuning curve just the way you adjusted it The name of the historical temperament if any and all 12 offsets from that temperament The partials used for tuning and custom offset if any for each of the 88 notes The selection of bass and treble intervals in the tuning curve editor Arbitrary textual notations that you can enter and view any time the tuning file 1s loaded Sound Generation Although the most common use for TuneLab is in listening to notes and providing a visual tuning aid you can also use TuneLab as a tone generator When TuneLab is in sound generation mode the pitch of the sound generated in the speaker or headphones is the same as the pitch that would have indicated correct tuning in the listening mode The pitch is generated for whichever partial is selected not necessarily the fundamental Sound generation is generally used to aid in stringing operations rather than normal tuning Tunin
25. cture of the main tuning screen on the previous page the phase display is the horizontal band with the black squares This display is used for fine tuning The black squares move to the left if the note is flat and to the right if the note is sharp The closer you get to the correct tuning the slower the black squares will move The goal is to make the black squares come as much to a stop as possible If the piano string has any false beats the black squares may appear to move in an irregular fashion sometimes moving back and forth When there is no note playing or when the note being played is far from the correct pitch the black squares will disappear or move randomly This display is called the phase display because it displays the phase of the microphone sound as compared to the phase of an internally generated reference pitch The movement of the squares can be compared to listening to beats between a tuning fork and a note on the piano For the bass and midrange when a square makes one complete trip around the display that corresponds to one complete beat that you would hear when comparing two tones For higher notes the display is artificially slowed down in order to keep the speed of the display in a reasonable range Spectrum Display The spectrum display is the graph with the peak in the middle As shown the zoom set to 50 cents around the desired pitch This display can be configured for other zoom levels This display shows how the s
26. curve represents the assumed inharmonicity 1 that the software derives from those measurements The curve is a best fit four parameter curve that is as close as an cil a c4 cs possible to the red dots But it 1s constrained by the fact that it only has four adjustable parameters so it cannot coincide exactly with the measurement points Using the same inharmonicity readings the new inharmonicity 3 model would look something like the graph on the right The graph now hits every red dot exactly Therefore the new inharmonicity model more exactly follows the actual 1 measurements which are connected by smooth exponential functions There is no best fit approximation involved so the new model can benefit from a larger number of measurements You do not have to take more measurements but if you do they will be used more effectively Unless you have a strong reason for using the old inharmonicity model we recommend that you use the new inharmonicity model Because the new inharmonicity model follows actual measurements more precisely the deviation curve on the tuning curve adjuster page may appear more irregular with the new model However the irregular appearance more accurately represents the actual characteristics of the piano and therefore is more desirable Fa 1 40 Ci ce ca Cs os ce TuneLab Piano Tuner for iOS T7 version 4 0 March 2014 Over pull Mode When raising or lowering
27. e left showing for as long as needed Interruptions that occur after the final prompt is displayed will not abort the calibration so you do not have to worry about responding immediately to that prompt It can wait indefinitely until you are ready to respond TuneLab Piano Tuner for iOS 27 version 4 0 March2014 Other ways to calibrate A trusted source of pitch If you don t want to use Internet calibration you can calibrate using a trusted reference pitch One source of trusted pitch is the National Institute of Standards and Technology NIST This agency of the U S government has a telephone service and shortwave radio service that disseminate standard time and frequency The telephone service is free of charge except for the usual phone charges it is not a toll free number and the shortwave radio service may be heard on 2 5 5 10 15 and 20 MHz if you have a shortwave radio Another source of accurate pitch is some other calibrated tuning device that can produce a tone Finally you can check your calibration against high quality electronic keyboard instruments that are normally set at the factory to exactly A 440 for A4 If you use this source be sure to check several keyboards to confirm consistency Do not try to use any tones from websites on the Internet for a calibration reference The pitch from such sites is only as accurate as the sound card in your computer which could be off by quite a bit NIST Broadcast and
28. e on the Samples St John s Kawai DSO Steinway D V Horowitz right From here you can navigate up and down the file system just like the Save to screen As with the Save to screen you can create new folders by tapping on New in the lower right corner When you find the folder z o where you want to move the selected file tap on New and then Create new file to move the selected file to that folder under the name you entered TuneLab Piano Tuner for iOS 32 version 4 0 March 2014 Cloud File Storage In addition to the usual local file storage for tuning files you also have the option to use Internet cloud file storage provided by Dropbox To use this option you will need to register for a Dropbox account Although there are fees for premium services from Dropbox you only need the basic free service to manage tuning files from TuneLab See www dropbox com for details on how to sign up for the free service After you have registered a Dropbox account you can switch to Dropbox file storage for your tuning files This is done by tapping on Switch to cloud file storage in the Files menu After you have successfully switched to Dropbox file storage all tuning file names will be displayed in TuneLab with a light blue background as seen below for both the current tuning name on the main tuning screen and all the file names in the lists of files when navigating the file system In this way you can be constantly r
29. e over pull TuneLab Piano Tuner for iOS 25 version 4 0 March 2014 offset will be limited to that safety limit In the example shown earlier where the pre measurements were showing the piano to be about 180 cents flat the calculated over pull would have been about 45 cents sharp But this is above the specified safety limit of 30 cents so the over pull offset was limited to 30 cents The fact that a safety limit 1s limiting the effective over pull offset 1s indicated by the pink background color in the box that shows the over pull offset When this happens the safest thing to do 1s to use the limited over pull offset and do a second over pull pass for the whole piano 1f needed You can set these safety limits to whatever you want by tapping on the Edit buttons next to them But you take all responsibility for what may happen with higher safety limits TuneLab is initially mstalled with the most conservative limits in effect If you want more permissive limits then you will have to change them The last option is the over pull factor This is a new option for version 4 0 It applies an adjustable factor of 0 33 to 3 00 to all over pull calculations The default is 1 0 for the standard TuneLab calculation The button labelled Edit pre measurements lets you review all the pre measurement that have been made You will also be able to delete ones that you decide are faulty If you delete a pre measurement TuneLab will simply interpolate between
30. eLab with Dropbox you sign in and give your Dropbox account information This information is stored on your device so you never have to enter it again But what if you decide to use a different Dropbox account There is no way to get Dropbox to ask for your account information without first unlinking from the existing account So if you tap on Unlink from Dropbox account this is exactly what happens The next time you switch to cloud file storage the prompt from Dropbox will appear just as it did the very first time you used Dropbox Tuning Exam Report Files and Dropbox Although tuning files are the primary reason for using Dropbox with TuneLab Dropbox will also be used if it is enabled to receive Tuning Exam reports So if you want to copy a Tuning Exam report to a desktop computer for printing or some other use simply switch to cloud file storage before generating the Exam Report Note that this implies the master tuning used to generate the report must also be in the Dropbox file system Ifit is not make a copy of it in Dropbox before trying to generate a report with it TuneLab Piano Tuner for iOS 34 version 4 0 March 2014 Chapter The PTG Tuning Exam 9 The Piano Technicians Guild administers a series of examinations for the Registered Piano Technician RPT classification One of those examinations is the tuning exam Certain electronic tuning devices are used to aid in the administration of several phases of this exam The f
31. eminded of which file system you are using Tuning Files TuneLab Help Baldwin R When the Dropbox cloud file system is Samples gt TCurve 0 45 Enabled all files are ultimately stored in pee Fundamental Dropbox through the Internet But you SESSA Autoup may not always have an Internet DSO Steinway D connection when you want to use TuneLab So it is important to St John s Kawai understand the caching method used by Dropbox V Horowitz All files that you write to Dropbox and all files that you open from Dropbox have a copy of them kept locally on your device This local copy is not to be confused with your normal local tuning files This local copy is called a cache and it is only accessible through the Dropbox interface even when you are not N connected to the Internet This caching should be transparent to you However you will notice that when you open a Dropbox tuning file that has never been opened before the screen briefly indicates a download from the Internet as shown in the picture on the left Normally if an Internet connection is available either by wi fi or Cancel Download by a cellular data plan this Waiting for download message will only appear for second or so But if the Internet is not available at the time this message will remain until you cancel it In most cases all the files appearing in the list of Dropbox files are already cached on your device But if you have
32. en Enabling Over pull Mode If your evaluation of the piano convinces you that the overall pitch change is large enough to need an over pull then you can begin the process of over pull tuning by pre measuring the piano This must be done before any tuning has been started in order to get an accurate measure of how flat the piano was to start with This will enable TuneLab to calculate an amount of over pull appropriate to the particular piano Pre measuring for Over pull Mode If an appropriate tuning file is already loaded then go to Settings and select Over pull It is important to have some tuning file loaded when the pre measurements are taken because the pre measurements are going to be interpreted with respect to whichever tuning file is currently loaded If you had started a new tuning but had not taken any inharmonicity measurements yet the tuning would be a no stretch tuning and the pre measurements would not accurately reflect how flat the piano was from what it should be TuneLab Piano Tuner for iOS 23 version 4 0 March 2014 On the over pull page tap on Begin pre measurements This will switch back to the main tuning page with two yellow status boxes showing The right status box shows which note you should play and how flat each note was as it is measured Make sure to play each note only once and make sure you stay in sync with TuneLab It is important that you play the note that TuneLab is expecting If you get out of sync
33. ero by touching the phase display with two fingers al This button turns on locking mode In this mode TuneLab listens to the sound from the This button switches to sound generating mode In this mode TuneLab generates a tone in the speaker or headphones rather than listening to the microphone This is not generally used for tuning but it can be useful for chipping after restringing a piano This is the Settings button and it switches to a list of various settings and configuration actions such as loading and saving tuning files doing a calibration configuring the spectrum display and controlling auto note switching TuneLab Piano Tuner for iOS 3 version 4 0 March 2014 to be able to end This button will stop inharmonicity measurements locking mode sound This image appears in place of a command button when a mode has been entered that needs generation mode calibration and over pull mode Loading and Saving Tuning Files The picture of the main tuning screen shows a button labeled Files in the upper left corner This button presents a menu of functions relating to tuning files Load tuning file offers a list of previously saved tuning files that can be loaded e Save current tuning as saves the current tuning under a name that you specify e New tuning prepares TuneLab for creating a news custom tuning e Notations on current tuning presents a screen
34. first option specifies the pre measure note pattern for the notes Edit Pre measurements you will pre measure The choices are a WHY No See w eee ee w L every note A0 C8 2 every white note Bass bridge goes up to E2 Edit 3 Notes C E G C E G etc from Cl to C8 Wound strings go up to B3 Limit over pull for Edit Whatever pattern you select TuneLab will sequence through those plain strings to 30 notes during the pre measuring process The default pattern is C E G over pull factor 1 00 Edit C E G etc This pattern is normally adequate for typical pitch raises The location of the breaks between the bass bridge and the treble bridge and between the wound strings and the plain strings is the next option The example here shows the bass bridge going up to E2 and the wound strings going up to B3 Tap on the Edit button next to these options to change either of them TuneLab uses this information in the calculation of the over pull offset as well as to qualify the next options the safety limits The next options are the safety limits There are separate safety limits for wound and for plain strings because wound strings tend to be more sensitive to over tensioning and more expensive to replace The safety limit for either group of strings is the upper limit on any over pull calculation for those strings Ifthe over pull calculation gives an offset that is greater than the appropriate safety limit the effectiv
35. g adjusted automatically to lock on to the sound it hears But unlike locking mode there is no note displayed in the current note display and there is an activity indicator a spinning wheel in the middle of the phase display You can cancel a calibration at any time before it finishes by tapping on the stop button red stop sign Calibration a 130 Using Other References for Calibration Besides the 500 and 600 Hz NIST tones TuneLab offers other choices If you have a precise 440 or 1760 Hz tone source you can use that 1760 LE Hz was chosen because it is the fourth harmonic of 440 Hz Finally there NIST 500 Hz or 600 Hz tones is a completely general choice where you can enter whatever frequency 440 Hz you like But whatever frequency you enter it must be the true frequency of the source that you intend to use for calibration If you have a calibrated CyberFork from Reyburn Piano Services you can use it asa Some other frequency calibration source by entering the each pitch in Hz The exact pitch of a CyberFork is offset from 440 by the amount written on the CyberFork The offset on the CyberFork is in cents so you first need to convert that to Hz You can use TuneLab to do that by selecting A4 440 Hz and then offsetting it by swiping through the phase display as described in Chapter 1 Adjust the offset until it matches the offset written on the CyberFork then read the frequency in Hz from the lower left of the c
36. g Closeness Indicator Just above the current note display there is a progress indicator that indicates how close your tuning is to the target pitch Here are some examples more than slightly less than half a cent off nearly perfect one cent off one cent off As these examples show the progress indicator starts filling in with dark green when the tuning is within one cent of the target pitch it fills completely when the tuning error goes to zero Microphone Level Indicator To help verify that your microphone is working properly and to help you control how loud sounds appear to TuneLab there is a microphone level i N bar graph indicator at the right edge of the spectrum display as shown here y W When the vertical bar reaches the top of the spectrum display that 2950 3000 3050 corresponds to a mic level of 100 If this indicator does not behave as expected you may have a problem with your microphone TuneLab Piano Tuner for iOS 9 version 4 0 March 2014 Normal Tuning Procedure Chapter 2 This chapter takes you step by step through an ordinary piano tuning not a pitch raise We are assuming that you have not tuned this piano before and saved a tuning file If you had saved a tuning file for this piano then you could skip the initial setup and just load that tuning file now and begin tuning Similarly if you would like to try a simple tuning
37. g curve offset TCurve is used and the other offsets are Temper 5 90 all zero and therefore are not shown Manual note Main Offset This offset is shown in the upper right corner on the main tuning page When this offset is left at zero A4 will be 440 Hz If you want to tune to a non standard reference like A 442 or A 435 you can adjust the offset until you get the pitch that you want You can change the offset by swiping your finger across the phase display Swiping to the nght increases the offset Swiping to the left decreases it The first time you adjust the offset you will get a message asking you to confirm that you want to adjust the offset This is to prevent an accidental offset if you happen to brush the phase display Touch the phase display with two fingers at once to quickly reset the offset back to zero The main offset can also be modified by locking mode as described on the next page Custom Offset This is a rarely used optional note by note offset and it is stored in the wee tuning file Itis sometimes used to record an existing tuning that was done aurally specifically in the PTG Tuning Exam It can be used to make note by note corrections to the tuning curve But if you find j undamental yourself making such corrections then you should consider 700 23 Hz Manual note readjusting the whole tuning curve instead This offset is not displayed if it is zero The custom offset for any note may be entered expl
38. h wider everywhere especially in the high treble Compare 9 0 this graph to the one on the previous page to see how well behaved the 4 1 double octave was when it was used for the adjustment So what we see is that tuning is a compromise between competing intervals Personal preference determines which intervals are most important at which parts of the scale As you can see there are many possible ways to adjust the tuning curve even if you use the fully automatic adjustment mode And after an adjustment has been made you can temporarily select a different interval just to see how that interval would work out with the current tuning curve adjustment We recommend that at first you simply select 6 3 in the bass and 4 1 in the treble and do an adjustment in automatic mode and use it If you prefer more stretch in the bass use the 8 4 octave instead of the 6 3 If you want more stretch in the treble use the 4 2 octave instead of the 4 1 double octave Mode Buttons The following buttons appear between the tuning curve and the deviation curve The first button makes it possible to adjust the tuning curve We saw earlier that double tapping this button lets you select between manual semi automatic and fully automatic adjustment mode The second button lets you pan the tuning curve graph up and down It also enables a two fingered pinch zoom on that graph Such zooming and panning 1s always enabled on the deviation curve The thi
39. has been captured save the tuning file main offset The main offset can be adjusted by the same methods as described in Chapter 4 All About this mode the background of the status box is yellow as shown here which Chapter 4 but in Exam Capture Mode there is an easier way Just tap on the status box with the yellow needs to be captured If Locking Mode is used to lock on to the piano tone tapping on the status box will under an appropriate name and then turn off Exam Capture Mode Pre exam Detuning Go to Settings PTG Tuning Exam and turn on the switch for Pre exam detuning This will cause the status box to the right of the current note to appear as shown here The reddish background is to warn you that detuning is in effect It also shows the detuning offset that would be used for the current note In order to make the detuned piano conform closely to the overall stretch of the master tuning the master tuning should be loaded before switching on Pre exam detuning As with Exam Capture Mode this mode also will enforce the PTG specified partials for each note TuneLab Piano Tuner for iOS 36 version 4 0 March2014 Generating a Report After recording the examinee s tuning you can generate the report that compares this tuning with the master tuning that was captured earlier First load the examinee s tuning If the examinee s tuning has just been captured and saved it is already loaded as the current tuning Then fro
40. he turn on gesture shown here when auto note switching 1s already on turn off turn on 260 16 5 Tuning Curve Adjustment As described in Chapters 2 and 3 the procedure for generating a 4n custom tuning for a particular piano involves measuring inharmonicity for a few notes and then making adjustments to the tuning curve Normally those adjustments are automatic but you can take manual control of them too Here is the page where you adjust the tuning curve It is actually composed of two graphs The upper graph is the tuning curve itself It gives the stretch offset for each note from AO to p C8 in cents A typical piano tuning might be at 5 to 10 cents for AO EEEE E and 30 to 40 cents for C8 4 1 6 3 The lower graph is called the deviation curve It shows how the current tuning and the measured inharmonicity affect the two selected intervals 2 0 shown in the button on the right The button shown here specifies the ae 4 1 double octave for the treble and the 6 3 single octave for the bass 05 Spo a w OD mrn _ 0 5 Both the tuning curve and the deviation curve can be zoomed and AEEA a panned as needed and the tuning curve can be adjusted in three 1 5 different ways as described in Chapter 2 TuneLab Piano Tuner for iOS 5 version 4 0 March 2014 Partials Each note is tuned according t
41. ible in the vicinity of the ends of the scale You can select between fully automatic semi automatic and manual adjustment modes by double tapping the adjustment button shown on the right Note The tuning curve adjustment mode is automatically set to the fully automatic mode whenever you measure inharmonicity TuneLab Piano Tuner for iOS 16 version 4 0 March 2014 Adjusting to Custom Offsets This aural electronic hybrid technique is an alternative to using Automatic Tuning Curve Adjustment mode Suppose you use aural tuning to tune several notes and now you would like to adjust the TuneLab tuning curve to match those notes You can lock on to those few notes one at a time and transfer the resulting offsets into the custom offsets for those notes as described in the chapter All About Offsets Then if you go to the Tuning Curve display the custom offsets will appear as red dots above or below the tuning curve as seen in the graph on equines uning Curve T the left In this example two notes have custom offsets G6 and A F T E The custom offset for G6 amp ie is slightly negative and were the custom offset for A7 15 is slightly positive If 10 these custom offsets 7 5 n represent pitches that you one an a SO want the whole tuning curve to hit exactly then in Full Manual Adjustment mode you can swipe through the right two green bands as shown by the green arrows in the graph on
42. icitly with the Custom offsets item in Settings That item will show you a table of all 88 notes where you can examine or enter any offsets you like You can also transfer the main offset to the custom offset for the current note by dragging your finger from the area around the offset to the current note display as illustrated here The transfer will take place if the starting point of the drag is inside the first yellow box and the Dragging Offset to Custom ending point is inside the second yellow box in the picture shown Offset for F5 here If you want to reset the custom offset to zero then use the Custom offsets item in Settings and enter 0 or use the Zero All button TuneLab Piano Tuner for iOS 21 version 4 0 March 2014 Tuning Curve Offset This offset comes from the tuning curve It 1s calculated based on the adjustment of the whole tuning curve taking into account the partial that is selected and the inharmonicity The only way it can be adjusted is to adjust the tuning curve as a whole Temperament Offset This offset 1s shown only when an unequal historical temperament is selected In that case this offset shows the temperament offset for the current note which is the same for all other notes of the same name in different octaves The 12 temperament offsets are stored in the tuning file when it is saved with an unequal temperament selected Locking Mode a status box on the left side of the page sa
43. ing the listening period cancel that measurement and try again After the measurement is done you will see a display like the following This page shows the results of the inharmonicity measurement for the note C2 Here we see that pitches were detected for partials 2 3 4 5 6 9 10 and 13 The offset column shows the offset in cents for the individual partials as compared to what they would be if there were no inharmonicity Generally there 1s more inharmonic offset the higher you go in the partial series The amplitude column shows the relative strengths of the specific partials These amplitudes are not used by TuneLab but are presented for your interest TuneLab analyzes the pattern of partial offsets and calculates an inharmonicity constant for the string in this case 0 170 If things look reasonable at this point you could tap on the Save button which will save the inharmonicity constant for the note C2 Or you can select Save which will save the measurement and begin another measurement of the same note to form an average of several measurements This information is presented to you so you can confirm that a valid measurement has been taken If you save an erroneous inharmonicity reading you could throw off the accuracy of the tuning curve that you generate The only item that is saved is the IH Con 0 170 in this case This inharmonicity constant is derived from the offsets shown Partial Offset Amp i B 0 0 2 0 5
44. irst step in the tuning exam is the recording of a master tuning This is normally done ahead of time by a committee of PTG certified tuning examiners The master tuning is determined on a specific piano and that piano may then be used to administer the tuning exam for a number of examinees Although an electronic tuning device may be used by the committee to establish a first pass at the master tuning the final master tuning is normally arrived at after intensive scrutiny and aural adjustment by the members of that committee As the tuning is finalized the offsets for each note are recorded into what becomes known as the master tuning This tuning is used as a standard with which to compare and grade various examinees tunings Sometimes the master tuning 1s recorded all at once after the whole tuning has been established and sometimes the committee will record small sections of the tuning as they are developed in order to minimize the possibility of tuning shift before the notes are measured The second step is the preparation of the piano for the examinee The preparation involves detuning the piano according to a pattern set by the PTG so that the examinee will not be able to benefit from the previous tuning but at the same time will not be overly inconvenienced by having to do a pitch raise in addition to a normal tuning The PTG specified detuning pattern contains alternating positive and negative offsets that average out to zero TuneLab Pi
45. it was in the loading files case you can navigate up and down the file system hierarchy to switch to the folder where you want to save the file Ifthe folder does not yet exist you can create it by tapping on New in the lower right corner of the screen and then tap on Create new folder When you have navigated to the folder where you want to store the file tap on New and then Create new file You will once again see a prompt similar to the one at the top of this page where you can enter the name of the file to be stored Holy Trinity Steinway Cancel Save here Cancel Moving Renaming Tuning Files If you store a tuning under a certain name and in a certain folder and later decide you really want that file to have a different name or reside in a different folder you can make that change from the Load tuning file screen Locate the file you wish to rename or move and touch and hold on to that name for about two seconds until a screen like the one on the left appears In this example we touched and held on a tuning called St lt Tuning Move to Help John s Kawai in the root folder We can now change the name of the file and tap on Move to here If you also want Yamaha lew criteria aca to move the file to a different folder tap Average on Cancel A prompt will appear in which you can tap on Move to a Cancel Move to here different folder Then you will see a St John s Kawai Move to screen like the on
46. l disconnect you after three minutes so make sure that when you call you have everything set up and time your call so that you will be assured of at least three minutes of 500 Hz or 600 Hz tones If you happen to be closer to Hawaii than to Colorado you can receive WWVH by shortwave radio or by calling 808 335 4363 in Hawaii For more information on both of these sources see the website www boulder nist gov timefregq stations iform html TuneLab Piano Tuner for iOS 28 version 4 0 March2014 Using NIST Tones for Calibration To use the NIST standard frequency service to do a calibration start by selecting Do a calibration from the Settings menu Then select 500 or 600 Hz NIST tones as the reference source Do not try to make the call to the NIST with your iPhone You need to use a different phone because TuneLab cannot be running at the same time as you are making a phone call Position the iPhone so that its microphone is right over the speaker of the phone that 1s calling NIST Follow the on screen instructions and make sure the microphone of your iPhone is close to the telephone speaker TuneLab will automatically determine which tone is currently sounding 500 or 600 and lock to it When TuneLab has heard enough it will display a message saying that calibration is done 500 00 Hz Manual note Here is what the middle of the main tuning page looks like during a i ie calibration It is similar to locking mode in that the offset is bein
47. lab world com Visual Tuning TuneLab is a software program that turns an 1OS device into an Electronic Tuning Device which provides a piano tuner with real time visual guidance during tuning The sound of a note as it is played 1s picked up by a microphone and analyzed The results of the analysis are displayed in visual patterns TuneLab displays two main visual patterns the phase display and the spectrum display Both of these displays indicate how the pitch of a note should be tuned but each display has its own unique advantages Having both displays visible simultaneously gives the piano tuner the best of both worlds Main Tuning Screen load and store tunings new _ specific help for each screen tunings amp mous file storage optional offset current tuning name Mason amp Hamlin A optional split scale Werkmeister III Split E3 F3 or custom offset tuning curve stretch for the current note offset due to selected temperament auto note switching mode optional historical temperament current partial Fundamental current target frequency 1 043 83 Hz phase display current selected note and partial spectrum zoom level spectrum display locking mode tuning error in numerical form microphone level indicator measure inharmonicity tone generating mode edit tuning curve various settings TuneLab Piano Tuner for iOS 1 version 4 0 March 2014 Phase Display Referring to the pi
48. le of the scale and works downwards and upwards from there When TuneLab Piano Tuner for iOS 12 version 4 0 March 2014 using a calculated TuneLab tuning you need not conform to this sequence You can tune in any order that you want The most common sequence when tuning with an electronic tuning device is to start with AO and go up from there If tuning the bass first select AO Play the AO on the piano and watch for a peak on the spectrum display The bass requires some special consideration Because you are tuning to a high partial it 1s quite easy for a wrong partial to masquerade as the correct partial if the note is seriously mistuned When in doubt use aural methods to verify that the note is at least grossly at the correct pitch before trusting the spectrum display or the phase display One way to confirm that you are tuning to the correct partial 1s temporarily to select a different partial If several partials appear approximately in tune in the spectrum display you probably have the partials identified correctly If you do not see a very prominent peak in the spectrum display it is not necessarily a cause for concern The phase display will work even with partials that are almost too small to see in the spectrum display Especially in the bass feel free to select a different partial on the fly if you are having trouble getting a reasonable indication on the current partial You can change to a different partial by swiping horizontally
49. logy In this manual we refer to notes on the piano by note name and octave number For example A4 is the A above middle C Each numbered octave runs from C up to the next higher B So the lowest complete octave on a standard piano is octave 1 and it includes C1 B1 The notes below that are AO A 0 and BO The highest note on the piano is C8 Notes that are sharps or flats will always be designated as sharps So for example we write A 4 not Bb4 Automatic Note Switching Selecting each note manually takes time and effort that can be avoided By using automatic note switching TuneLab will switch to the next note when it hears you play it You can configure automatic note switching to switch up down or in both directions If you are tuning from low notes to high notes then it may be an advantage to use Auto up note switching so that TuneLab will not follow you down the scale as you play notes you have already tuned for test purposes Automatic note switching may be configured from the Settings page or by using the gesture shown below i m Automatic note switching can be turned on or off by swiping from the ssa 5 current note box to the space to the left to turn it off or to the right to turn it on as shown here Start by touching your finger to the current note display and then sliding it left or right to quickly turn off or turn on automatic note switching To cycle through Auto Up Auto Down and Auto Both do t
50. ls default that will apply to all new tuning files that you create then you can tap on the store as default button to make that table the default Partials can also be changed for the current note while tuning by dragging your finger horizontally across the spectrum display on the main tuning page Swipe from the left to the right to go to the next higher partial Swipe from the right side to the left to go to the next lower partial These on the fly changes are not stored in the table of partials and are canceled when a new note is selected unless you have enabled Persistent Partials under the Settings in which case changes made on the fly are immediately incorporated into the current tuning file Inharmonicity Inharmonicity is the phenomenon whereby the pitch of the partials of a piano n i string are not whole number multiples of a fundamental frequency TuneLab ao 0 297 assumes that the partials are offset from their exact whole number multiples of the fundamental by an amount that increases with the square of the partial e number and is proportional to the inharmonicity constant When TuneLab ome aon measures inharmonicity for a string the pitches of all the partials of that string aiti are analyzed and an inharmonicity constant is generated for that string The A4 0 647 inharmonicity constants are stored in the tuning file when a tuning is saved a5 1 920 You don t need to be concerned with the ac
51. lso is the page where you would do that Simply swipe horizontally through the name of the report you wish to delete and tap the delete button that appears Before being evaluated against a master tuning the r EF k pick master This Tuning Exam Report does not automatically take into account the evaluation of the examinee s ability to set A 440 to an absolute standard That evaluation must be done separately and taken into account manually by the examiner In order to measure the examinee s A 440 you must turn off any exam mode in order to be able to force the fundamental to be used for A 440 because in the exam modes the second partial is used for that note With exam mode turned off you can simply lock onto the examinee s A 440 using any tuning file and no offsets Then from the main offset you can read the examinee s error Saving Exam Reports in Dropbox When Dropbox cloud file storage is enabled and an Exam Report is generated that report will be stored in the cloud through Dropbox See Chapter 8 for more details on using Dropbox file storage TuneLab Piano Tuner for iOS 37 version 4 0 March2014 Chapter Split Scale Tuning 10 When a piano has a large jump in the inharmonicity at a break usually between wound strings and plain strings it may be desirable to create a custom tuning that has special provisions to accommodate that break TuneLab has such a provision and it is called Split Scale Tuning
52. m the PTG Tuning Exam page tap the button labeled Generate Report The first step in generating a report is to select the temperament octave as shown on the right The PTG Tuning currant ning willbe Exam specifies that the examinee s tuning will be offset before adjusted so that the comparison with the master tuning so that the average error in difference between it the temperament octave is zero After setting the picker to the Be eee wae F 3 F 4 averages to zero in appropriate octave tap on the pick master button This will ihe eh caer aciaua show the tuning files in much the same way as when a tuning file is loaded But now instead of loading the file that you select the selected file will just be used as the master tuning to create the report After you select the master tuning you will be returned to the Report page and now you will have the option to view the report that was just generated You can tap on view report now or you can come back to that report at a later time The report has already been written and it will continue to exist in your device under the name of the examinee s tuning file name If you want to come back to view this report later you can tap on View Old Reports from the Tuning Exam page This will display a list of all stored reports according to the name under which they were originally stored You can select any stored report in order to look at it again If you want to delete old reports from your device this a
53. manually or with the aid of automatic measure sequencing Then afterward measure the inharmonicity on both sides of the break If one of those readings exceeds the other by at least 60 then TuneLab will take the presence of those two consecutive inharmonicity readings as the indication that it should use Split Scale tuning TuneLab looks through all your inharmonicity readings and evaluates all the break readings readings from adjacent notes according to the 60 criteria So 1f you happened to have included more than one break TuneLab will determine which is the true break by taking the one with the largest percentage change in inharmonicity This is useful because the standard set of inharmonicity readings might happen to be right near the break And so when you take readings from around the break you may generate more than one pair of adjacent readings Also TuneLab will not consider anything as a break unless it is between C2 C 2 and E4 F4 Ifyou do establish a Split Scale tuning and then change your mind and want a normal tuning then use Edit Inharmonicity Constants from the Settings page and delete one of the readings at the break This will put TuneLab back into a normal tuning For example the following set of inharmonicity readings would trigger Split Scale tuning TuneLab Piano Tuner for iOS 38 version 4 0 March 2014 AUS Uassa Als O00 Azs Vg Vis E3 0 150 Just below the break F3 0 090 just above the break A3 0 240 A4
54. n the high treble we recommend just trying to get the peak to be centered on the central red line in the spectrum display But if the Phase Display is not too disturbed by false beats then it is always preferable to use that Using Auto Note Switching You can use auto note switching to make tuning easier To enable this feature use the swipe gestures from current note display to the right as described in Chapter 1 When auto note switching is enabled TuneLab constantly will be listening for nearby notes and when it hears a nearby note it will switch to it Auto note switching can be enabled for switching up down or in both directions The range of auto note switching is plus or minus 300 cents from the current note If you use aural checks while tuning be aware that auto note switching may occur while you are doing these checks If an unintended auto note switch occurs simply switch back to the correct note manually TuneLab Piano Tuner for iOS 14 version 4 0 March 2014 Chapter The Tuning Curve 3 The tuning curve is the source of the TCurve offsets that appear on the main tuning screen The tuning curve determines how much stretch there is in the bass and the treble You do not need to look at the tuning curve if you are using a saved tuning file or 1f you are using automatic tuning curve adjustment But it is advisable to take a look at it when making a new tuning just to confirm that the automatic adjustment is reasonable Y
55. o its fundamental pitch or the pitch of one of its partials The current settings box shows which partial is being used for the current note The selection of partials comes from a table of partials This table may be modified from the screen shown here Se eS ree The table shows the partial number for each note from AO to B6 I C7 through C8 are assumed to be using the fundamental You can Ot 0 123 45 6 select any entry in the table by tapping on it Ifthe desired note is not visible then you can scroll the table up or down The selected entry F 4 2 2 1 1 is indicated by the green highlight Once you have selected the entry you wish to modify tap on the or buttons to raise or lower the highlighted partial number Once a particular partial has been set G 6 4 2 2 4 4 to the desired value you may want to use that same partial in some following notes Tap the dup button to duplicate the partial value G 6 4 2 2 1 1 into the next note In this manner you can quickly set an entire ine a s 4 section of notes to the same partial F 6 4 2 2 1 1 The table of partials is stored along with the tuning curve in the tuning file when you save a tuning It is possible to customize the B 6 6 4 2 1 1 1 table of partials for each piano that you tune Whenever you begin a new tuning the table of partials is initialized to the default table of store as partials If you want to make a change to the default table of partia
56. on can be achieved by Internet calibration or by using a more precise source such as the NIST standard frequency services described later The result of a calibration is a knowledge of the actual sample rate of the sound system Normally calibration is done only once when TuneLab is first installed on your phone but you can re do the calibration at any time if you wish See the chapter on calibration later in this manual for details on doing a calibration If you check TuneLab against a trusted standard and it agrees with that standard to your satisfaction there is no need to actually perform a calibration Unequal Historical Temperaments By default TuneLab assumes an equal tempered scale If you would like to tune in some unequal temperament you can select an historical temperament to apply to your tuning An historical temperament is defined by a list of 12 offsets for each of the 12 notes of an octave When an historical temperament is selected one of these 12 offsets 1s used depending on which note is selected For any given note the same offset 1s used in every octave The temperament name and the temperament offset for the selected note appear in the Current Settings box shown previously When you save a tuning the historical temperament values and temperament name are saved in the tuning file See the chapter on historical temperaments for information on making and using temperament files Tuning Files A tuning file is a file made
57. on switches to the view of the tuning curve and the deviation curve The tuning curve shows a graph of the stretch offset for all notes and the deviation curve analyzes selected intervals for the bass and treble On this page you can adjust the tuning curve to achieve an appropriate amount of stretch tuning for the particular piano See Adjusting the Tuning Curve in chapter 2 for more information on the tuning curve This button starts a measurement of inharmonicity which is needed when you create a new tuning After pressing this button play the selected note and hold it for up to six seconds You should have all but one string muted so that TuneLab hears a single string You need to measure at least four and preferably five or six notes in order to establish the inharmonicity pattern for the particular piano After the measurements are made you can adjust the tuning curve to match them microphone and tries to adjust the offset to match it You can see the offset changing and you can see the phase display and the spectrum display indicating an in tune condition This is used for matching an offset to an existing tuning to measure an existing tuning or to establish a non standard offset for a tuning Be sure to turn off locking mode promptly when the sound stops because otherwise TuneLab will continue to try to lock to noise resulting in a random offset The offset produced by locking mode can be reset to z
58. ou will certainly need to look at it to make manual or semi automatic adjustments Also you will need to visit the tuning curve adjuster if you want to change which intervals are used to adjust the bass and treble portions of the curve as described later in this chapter The tuning curve will be adjusted automatically after every inharmonicity measurement using the bass and treble intervals you have selected Therefore you can just start tuning after making the final inharmonicity measurement for a new tuning The rest of this chapter will describe what aspects of the tuning curve are adjusted whether automatically or manually and how to accomplish those adjustments Tuning Curve Variations The tuning curve is adjustable in four different ways as illustrated here over all treble stretch over all bass stretch treble shape bass shape Each of these graphs shows the stretch for all the notes from AO to C8 The first graph shows three variations of a tuning curve where the thing that is being adjusted is the overall stretch in the treble The second graph shows three variations of a tuning curve where the thing that is being adjusted is the overall stretch in the bass The third graph shows variations of the shape of the tuning curve in the treble The overall stretch at C8 remains the same but the way in which it gets there is different One graph shows a stretch that gradually increases as you approach C8 Another shows a stretch that goes u
59. ound energy is distributed across the frequency spectrum If TuneLab is listening to a pure tone then the spectrum graph will show a single peak as shown here This example was made from the note C6 and the display shows that it is 2 0 cents sharp The red line in the center of the display marks the correct pitch The green lines nearest the center mark the points that are 10 cents above and below the correct pitch The objective in tuning with the spectrum display is to tune the note until the peak of the graph is centered on the red line The spectrum display has several advantages over the phase display One is that it shows where the pitch of the piano is even when that pitch is far from the correct pitch The other advantage is that the spectrum a an display can show several peaks at once The picture here shows what you would get when playing a poorly tuned unison Here the piano note C7 is NING L being played with one string tuned nine cents higher than the other two strings In this display the zoom has been set to its most zoomed in level 50 cents By looking at individual peaks it is possible to do a rough tuning without mutes You simply tune one of the strings and watch which peak moves then move that peak to the central red line azi Taki ai Switch to different zoom levels by using a two fingered pinch zoom in the hh spectrum display In addition to zoom levels of wide 260 cents 130 l
60. p very little at first and then abruptly goes up to the same value for C8 as before And yet another variation is midway between these two extremes Of course there there are infinitely many such variations but these few have been presented to illustrate the kind of variation we are talking about And finally the fourth graph shows variations in the shape of the bass portion of the tuning curve TuneLab Piano Tuner for iOS 15 version 4 0 March 2014 Every tuning curve generated by TuneLab is some combination of these four kinds of variations or adjustments So it 1s not surprising that in manual adjustment mode you have four different adjustments that you can make Here is what the top part of the tuning curve adjustment screens look like in each adjustment mode 25 25 20 20 20 15 15 i 15 10 3 ee O 10 ie r 10 S e se 4 1 4 1 4 1 anom Qc lot a FULLY AUTOMATIC SEMI AUTOMATIC MANUAL Notice first that these graphs have breaks and do not appear continuous These breaks represent places where the tuning switches to a different partial The jumps in the tuning curve are necessary to compensate for the fact that different partials are being used The jumps in the curve do not represent actual jumps in the tuning which is in fact still continuous In the manual mode on the far right there are four
61. r one note to expose the right hand unison Tune that unison aurally and then move the left hand mute over one note That will expose the left hand unison and also re mute the right hand string In case your right hand unison was off at all it is better to tune the left hand unison to the middle string than to tune the left hand unison to the combination of the middle and right hand strings sounding at once Also having all three strings sound at once increases your chances of having to deal with false beats So always tuning unison strings in pairs is recommended TuneLab Piano Tuner for iOS 13 version 4 0 March 2014 Tuning the High Treble Continue tuning through the high treble Here you may have some trouble with the phase display Even though TuneLab has artificially slowed down the movement of the phase display in the high treble false beats together with a short sustain can produce a confusing picture in the phase display It is here that we recommend that you direct your attention to the spectrum display The resolution of the spectrum display is in term of cycles per second not in terms of cents Therefore the cents wise resolution of the spectrum display gets better the higher you go in frequency You can see this by noting the coarse look of the spectrum display around A 440 in the picture in Chapter 1 as compared to the somewhat more precise look of the graph following that one which is based around C7 at about 2100 Hz Therefore i
62. rd button shows the details on individual notes in the tuning curve After tapping on this button you will see details about a single note In this mode you can touch anywhere in the tuning curve to select which note s details are reported The fourth button lets you select different intervals for the bass and the treble as described earlier TuneLab Piano Tuner for iOS 19 version 4 0 March 2014 Displaying Beats in the Deviation Curve The deviation curve normally shows the condition of the selected intervals in cents But you can also show beats To switch to beats swipe the deviation curve with a Z 4 0 shaped gesture as shown here Starting on the left side drag your finger to the right then to the left then back to right and lift it off This will switch the deviation to displaying beats instead of cents It can also be used to switch back to cents When beats are being displayed the background of the deviation curve switches from the light blue shown here to a reddish color TuneLab Piano Tuner for iOS 20 version 4 0 March 2014 Chapter All About Offsets A TuneLab uses several kinds of offsets The offsets are specified in terms of cents Offset 0 60 The offsets in effect are all displayed on the right side of the Current Settings box as Cust 4 00 shown here TuneLab combines them to calculate the desired pitch for each note In TCurve 40 13 normal tuning only the tunin
63. s about 3 3 cents wide e The 4 1 double octave D 4 D 6 is nearly perfect e The 4 1 double octave C6 C8 is about 0 2 cents wide To read the deviation curve properly remember that every interval is composed of two notes and the deviation curve reports the condition of that interval on the graph But the graph shows the condition of that interval for either the upper or lower note in the interval In the treble section of the deviation curve the note chosen to represent the interval is the upper note but in the bass section the note chosen to represent the interval is the lower note So for every point on the graph imagine an interval that extends from that point to the right or to the left depending on which half of the deviation curve you are in aa Now let s explore the deviation curve further Without changing the s P tuning curve adjustment we can select the 4 2 octave in the treble in T ee place of the 4 1 double octave If we did that the deviation curve would Bi become the graph as shown here on the left The graph zoom has been a changed to contain the very low value at C8 When the 4 1 interval is changed to the 4 2 interval the tuning does not automatically change The tuning is still the same but the deviation curve changed because it is now reporting a different interval in the treble Notice that the bass portion of the deviation curve remained the same since it is still reporting TuneLab Piano Tuner for iOS 18 ver
64. sion 4 0 March 2014 the 6 3 interval But looking at the 4 2 interval we see that this tuning has a perfect 4 2 octave at C4 CS This is actually quite good because the fourth octave is normally tuned with perfect 4 2 octaves when tuning aurally But 4 2 octaves are not used for aural tuning in the high treble because the partials involved are too weak to cause much of a beat So we should not be upset at seeing such narrow 4 2 octaves being reported in the high end of the deviation curve FZU Now suppose we force an automatic adjustment of the tuning curve based ie on this new interval selection by tapping on the tuning curve when the 0 5 background is all green Then the deviation curve would look like the 0 0 H errare i O s one shown here As before when we do an auto adjust the selected D intervals are forced to come out beatless at near AO and C8 Adjusting with 4 2 in the treble generally produces more stretch than with 4 1 in the treble In the example that generated these graphs C8 was stretched by 36 01 cents when the 4 1 interval was selected for the adjustment But C8 was stretched by 46 83 cents when the 4 2 intervals was used as the basis of the adjustment instead 070 Now that we have adjusted the tuning curve based on the 4 2 intervals 6 0 let s go back and see how the 4 1 interval would turn out with this Ha adjustment The graph shown here shows that the 4 1 interval would be BAEOE Y generally muc
65. t cents and 50 cents the spectrum display can also be zoomed in on the To ees center 10 cents in the center of the display while still showing 130 cents or 260 cents overall When one of these dual zoom modes is selected the numbers at the bottom of the graph show offsets in cents rather than frequencies in Hz The picture shown here is of one such setting of the spectrum display showing two simultaneous notes one at A6 and the other at A 6 TuneLab Piano Tuner for iOS 2 version 4 0 March 2014 There is also an option switch under Settings that makes the spectrum display appear thicker as shown here A thicker graph may be easier to see but it also is a bit less precise than the default thin graph The thick option does not apply to the wide spectrum zoom setting 130 w Mid oF 100 10 10 100 One advantage of the phase display is that it generally provides more resolution than the spectrum display except in the highest octave where the resolutions of the two displays are about the same For this reason the spectrum display is used for rough tuning and the phase display is used for fine tuning False beats can confuse the phase display though So the spectrum display is preferred even for fine tuning in the high treble In any case both displays are available so you can use whichever display seems to be giving the clearest indication Command Buttons main tuning screen This butt
66. the inharmonicity of a note first make sure the note you are about to play has been selected in TuneLab Now that TuneLab is showing the note that you want to measure tap on the measure button shown on the right This will cause a yellow status box to appear This means TuneLab is waiting for you to play Cl The sudden rise in sound Measuring level when you play the note is the trigger to begin the measurement If you trigger don t play the note shortly after initiating a measurement it is quite likely that some extraneous noise may trigger the measurement period and you will get a false reading If this happens press the stop button red stop sign and start over The stop button can also be used to cancel a measurement if you didn t really want it now When you play the note and the trigger is recognized the status box will change to green as shown below TuneLab Piano Tuner for iOS 10 version 4 0 March 2014 lt Tuning l z5 0 51 i 1 75 A 3 263 aA hfe 6 SS Te a 10 26 10 TAEL ass Ta T3 19 18 14 15 16 Save 0 100 J 14 29 14 D a Moomina Partial Offset Amp 1 i ol J 14 m ho om 1 mo D io Go Al 4 Save For note C2 IH Con 0 170 Discard The listening period is about six seconds for low notes and progressively shorter for higher notes If anything happens to interrupt or interfere with the note dur
67. the neighboring entries to calculate the over pull offset It is not necessary to pre measure every note To view the table of pre measurements from the main tuning page it is not necessary to navigate to Settings and Over pull If over pull tuning mode is currently enabled tap on the over pull offset to be taken directly to the table of pre measurements TuneLab Piano Tuner for iOS 26 version 4 0 March 2014 Chapter Calibration Procedure 6 This chapter takes you through the process of doing a calibration Normally you only need to do a calibration once when you first install TuneLab on your device The results of the calibration are stored permanently on your device and used every time you run TuneLab You can check the need for a calibration by comparing TuneLab to some trusted source of pitch Internet Calibration Starting with version 4 0 the preferred method of calibration is Internet Calibration This method uses Internet time servers to measure out a precise six hour period of time During that time the calibration software counts audio samples from the 10S sound system The result is a measure of the audio sample rate to an accuracy of 0 01 cents To perform an Internet calibration your device needs access to the Internet and six hours of uninterrupted running time This is most conveniently done by starting a calibration just before retiring for the night To avoid running down the battery the device should be connected to a
68. through the spectrum display as shown here Swipe from the left side to the right side to go to the next higher partial Swipe from the right side to the left side to go to the next lower partial If you have enabled auto partial selection in Settings TuneLab will search for a stronger partial as you tune and switch partials automatically if one is found We recommend that for your very first tuning with TuneLab you leave auto note switching disabled That way you will not be confused by unintentional note switches Later on you can enable auto note switching to speed up your tuning For now you can manually switch notes by tapping a quadrant in the spectrum display as described in Chapter 1 Using your Mutes Tuning Unisons When you finish the monochord section of the bass and come to the bichords always mute one of the strings before tuning the other string After one string 1s tuned remove the mute and tune the unison aurally There are times when machine tuning of the unisons is an advantage but those instances are usually in the high treble In the bass there are many partials that need to be balanced Tuning these unisons aurally allows you to make the needed compromises to get the best sounding unisons Also aural unison tuning 1s faster than using any electronic aid Proceed up through the bi chords and into the tri chords Here you can mute the outside two strings and tune the middle string Then move the right mute ove
69. tual values of the inharmonicity ag constants that you measure but you can see and selectively delete them using the screen shown on the right which you can find in Settings To delete a singe entry just swipe horizontally through that entry That will display a 5 453 TuneLab Piano Tuner for iOS 6 version 4 0 March 2014 Delete button as shown here for the A2 reading There is also an overall Delete button at the top of the page That button will delete all inharmonicity readings The following graph shows inharmonicity readings of a typical piano A Kawai 6 8 grand Typical Inharmonicity Values for a 6 8 Kawai Grand In a well scaled piano you can expect to see the lowest inharmonicity constants somewhere around octave 2 From there the inharmonicity constants increase slightly as you move down to AO and they increase substantially as you move up to C8 TuneLab uses the specific inharmonicity samples that you collect to form an inharmonicity model for the entire scale Using this model TuneLab makes all the calculations regarding how partials relate to one another Since 2011 TuneLab Piano Tuner has used a new inharmonicity model by default You can use the old inharmonicity model by setting an option switch in Settings The old model is a four parameter formula that a 3 looks something like the graph on the left The red dots f represent actual inharmonicity measurements that you gt make and the
70. urrent settings box It should be near 440 For example if the CyberFork says 0 56 cents the frequency of that CyberFork is 439 858 Hz Write that number down and enter it at the appropriate time when using that tone source to perform a calibration 1760 Hz Internet Calibration Regardless of whether you use a tone source or Internet Calibration the resulting sample rate is displayed in the About this version screen in Settings TuneLab Piano Tuner for iOS 29 version 4 0 March2014 Chapter Historical Temperaments 7 TuneLab normally produces an equal temperament But historically this was not always the norm Even today there is a strong interest in non equal temperaments With a non equal temperament different key signatures have different musical characteristics It is said that the classical composers were aware of these differences and wrote their music to take advantage of these differences A full treatment of historical temperaments and their musical characteristics and advantages and disadvantages is beyond the scope of this manual But if you are interested there is a lot of literature on this subject For our purposes an historical temperament is defined by a set of 12 offsets from equal temperament These 12 offsets are repeated in every octave TuneLab comes packaged with a set of historical temperaments that can be applied to any tuning file If you know of an historical temperament that is not included
71. where you can enter text that is stored in the tuning file and may be viewed whenever that tuning file is loaded e Switch to cloud file storage local file storage switches between using tuning files stored on your device and tuning files stored in the Internet cloud file storage service Dropbox e Dropbox Operations lets you unlink from the current Dropbox account or copy all the local tuning files on your device to Dropbox Selecting Notes j You can change the selected note one note at a time or one octave Octave Down l Octave Up at a time by tapping on one of the four quadrants of the spectrum a ae aee ae me display The two upper quadrants change the octave and the two Note Down _ u Note Up lower quadrants J si i D change the note The picture on the left shows how the spectrum display is divided into quadrants octave selection To directly select any note first tap on the 1 2 3 4 5 current note display as shown here on the left That will bring up a note selection page as shown on the right On this page you first select the octave by tapping on one of the buttons labeled 0 to 8 and then tapping on the desired note on the piano keyboard Tap Tuning to return to the main tuning page with the selections as they are shown note selection TuneLab Piano Tuner for iOS 4 version 4 0 March 2014 Note Selection Termino
72. with TuneLab it is easy to add that temperament to your iPhone by entering the 12 offsets as described below Loading Temperament Files To add an historical temperament to the current tuning go to Settings and select Load temperament This will show you the list of historical temperaments that are currently on your device If you see one that you want to use just tap on it If you have an historical temperament applied and would like to remove it from the current tuning tap on the first entry in the list of historical temperaments which says Cancel temperament This will return your tuning to Equal Temperament When an historical temperament has been added to the current tuning then you will see the name of that temperament just below the tuning file name on the main tuning page Also you will see an offset for each note showing as Temper xx xx As you change notes the temper offset changes Making Temperament Files If you want to use a temperament that was not provided with TuneLab you can create your own new temperament files using Make temperament from Settings All you need to know is the 12 offsets that define the temperament After you enter the 12 offsets you will be prompted to enter a name for the new or modified temperament When you make a new temperament file you can then select it into any tuning curve just like the original historical temperaments that came packaged with TuneLab Note that creating a temperament does
73. ying Locking When you are in locking mode TuneLab listens to the sound in the microphone and tries to lock to it by automatically adjusting the offset This function may be used to determine a non standard reference to match an existing tuning Make sure to turn off locking mode promptly when the sound is no longer available or else TuneLab will continue trying to lock to random noise Locking mode is entered by tapping on the lock button shown here Then TuneLab will show a Storing Main Offset in Tuning Files When a tuning file is saved while a non zero main offset is in effect this offset will be stored in the tuning file But the stored offset will not be restored automatically when that same tuning file is loaded later Instead you will see the following prompt when you load that tuning file The selected tuning file was stored with an offset Do you want to use that stored offset If you respond with Yes then the stored offset will be loaded If you respond with No then the offset will not be loaded and the tuning will be based on the standard of A4 440 Hz TuneLab Piano Tuner for iOS 22 version 4 0 March 2014 Chapter Over pull Pitch Raise Tuning Procedure 5 Over pull tuning is most often used in pitch raising although it could also be used for pitch lowering When large overall changes are made to the tuning of a piano the notes that you tune tend to change pitch as you tune other notes

TuneLab Piano Tuner User`s Manual, version 4.0

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