Room Analyzer PRO ENG
Contents
1. Room Analyzes A FaR Freq 286 34H2 Mag Room Mode Measurement Instructions Place the microphone to the left in the room as shown in the picture Left Speaker Right Speaker Then press Measure Subwoofer 7 verage 3 positions Mic DO ESC main Cancel With a double click in the Room Analyzer window you change information between Room Analyzer 1 and spectrogram 3 Room Analyzer Shows the frequency response Blue curve room modes Green curve and calculated result curve White curve Select what curve to display by clicking the boxes Modes EQ if Measured 11 of 37 lyzer RTA SPL Measured frequency response in real time with a resolution of 1 3 octave Spectrogram reverberation time WS w12 bas vbid v gg XTZ elp Ele view Setup He CEE G d8 Type 2 H Mode o 1 675 Mode Measured Result smoot th 3ppo Mades smooth 2ppo Meas smooth Stimulus EQ 3ppo Use flH Q G dB ms 50 0 Store Curve Load Clear StimuusEQ CopyRoomModes Save Export lag 23 6508 Shows the result of the room analysis The Time spectrum analyzer displays a colour spectrum in frequency level and time The spectrum shows the reverberation time in the room 12 of 37 File View Setup Help RE 11 Full Range FoomAnabzer RTA SPL Shows the frequency res2. If the final result is not to your satisfaction it could be caused by measuring disturbance Please redo the measuring procedure More information about Frequency response RTA see page 18 Full Range page 30 27 of 37 Manual adjustment of curves Drag amp Drop adjustment Adjustment of the time axis These options are only displayed in Advanced mode For the advanced user there is a function available to manually adjust the frequency response curve By grabbing a peak or dip and right clicking the mouse you may correct the curve manually By moving the mouse sideways the frequency is altered Releasing the mouse button will produce new suggestions for the PEQ in order to achieve the desired curve The new PEQ suggestions are editable for amore New PEQ suggestions may be precise adjustment This is done by double clicking the imported to XTZ W12 DSP value to change or right click then select properties without overwriting data imported earlier These have to be added manually r This requires more PEQ s available Important Use these options with great care An increase at any frequency may cause substantial amplifier load Important Room Analyzer measures the frequency response at time zero This point is indicated with a yellow line in the spectrogram The yellow time line can be moved by clicking it then holding the left mouse button down while moving the mouse The freq
3. 99 Only visible in advanced mode Export multi Export ROOM RTA or both information to XTZ ni test XIZ DSP Products ROM RTA BOTH 15 of 37 This is about File menu and the options File wiew Setup Help BISA ROM RTA BOTH File New Open Loads earlier stored curves Save Saves the measurement Save as Export curve Exports the measurement to a textfile Export Screen Dump Exports the measurement to a picture bmp Print Prints the measurement Black White View Toolbar Shortcuts to Save Load resp Print functionen Statusbar Shows the marker in Frequency and magnitude Color Theme Dark Bright Changes color theme in the program Bright or Dark Setup Advanced mode More options settings for some functions e Stimulus EQ e Smoothing possibility e Load Save curves e Change of scale RTA window e Export Room Analyzer amp RTA Help About XTZ Software version 16 of 37 Preparation Set up Level adjustment Output level Make sure the software is installed and the equipment is See mounting connected Before the measuring procedure starts make sure the microphone is placed in ear height when adjusting the output level Start Room Analyzer PN Room Analyzer XTZ File View Ed Help E amp v Advanced Mode For advanced users there is a choice called Advanced Mode lt More settings and features can be found in Advanced mode In order to achieve
4. a reliable measuring procedure it is important that the correct output level is set Put the control on the output level in the middle Now there should be a white noise in the speakers The level meter to the right should be up to the green G If the level is too high or low adjust it with the ipur Level volume control on the system subwoofer Click on STOP to turn off the white noise Action Now there is a possibility to make small adjustments on the output level with the control bar H REMEMBER HIGH SPL level can damage your ears 17 of 37 Basic principles Measuring methods The subwoofer system should have as neutral settings as possible before the measurement begins This way the smallest possible adjustments can be used The basic principle is that the measurement is made in two steps Step 1 Room Analyzer Room modes are best treated with PEQ Parametric EQ for more accurate precision Use Room Analyzer at high resolution to find the room modes If the Room Analyzer suggests the use of PEQ Parametric Equalizer you will need this in your equipment Step 2 RTA Full Range After adjustments of the room modes adjust the frequency response in the sweet spot with the RTA Full Range frequency response with graphic EQ and or parametric EQ There are different methods for measuring the frequency response 1 Frequency response RTA A simple measurement which gives t
5. di Poor odes se 2 G dB Type M1 5 43 6 24 00 Mode W2 108 36 6 16 75 Mode MODE Room Modes Is the first priority for Room Analyzer EQ A peak dip that needs treatment The values that are presented in Found Room Modes are values that directly can be used in a subwoofer with PEQ The values can be set manual by right click the value This can be exported to XTZ DSP products The presented values in Found Room Modes can be exported Click on Export to export the presented value It is possible to export the values by clicking on ROOM in the short cut menu The exported settings can now be imported to 99W12 DSP by PC REMOTE Software to do settings on 99W12 DSP The Room Analyzer presents values based on the measurements for use in a PEQ These values can be dO DA copied to the Stimulus EQ window If a new measurement is made with values in Stimulus EQ there will be a result as if there had been an adjustment with a PEQ Click on Copy Room Modes and the values are copied to the Stimulus EQ window Remove these by clicking on Clear Stimulus EQ With a graphic EQ the frequency response can be adjusted with Frequency response RTA Full Range The room compensation is now done If the measures are made with a subwoofer there will be a difference when the complete system is connected So it could be wise to do a Frequency response RTA Full Range on the complete system
6. microphone to the left in the room as shown on the picture Room Mode Measurement Instructions Place the microphone to the left in the room as shown in the picture Right Speaker Then press Measure Left Speaker Subwoofer V Average 3 positions Mic O Click on Measure and the measuring process starts A sinus sweep will be played Move the microphone to the sweet spot as shown in the picture Room Mode Measurement Instructions Move the microphone to the listening position as shown in the picture Left Speaker Sar Right Speaker Then press Measure Titi ie IF vi Cancel Click on Measure and part 2 starts Move the microphone to the right in the room as shown on the picture Room Mode Measurement Instructions Move the microphone to the right in the room as shown in the p picture Left Speaker aros Right Speaker Then press Measure Mic DO i CEER Cancel Click on Measure and measuring 3 starts The measuring procedure is now finished 23 of 37 Read the difference between 1 and 3 position measurement Technical explanation Room Analyzer After a short while of calculations the result is presented In the main window the frequency response is now shown To the right in the smaller window the reverberation time Ifyou double click in the main window the information in the windows changes There are three d
7. Analyzer but a good indication how the average sound is Full Range is the most advanced tab in Room Analyzer Here is a high resolution full range measurement There are options about how much room information that should be part of the measurement The different information can be shown with 3 curves at the same time RT60 is a reverberation measurement We are doing it according to ISO 3382 Displayed with standing bars We also have a water fall diagram in both 2D amp 3D A lot of information can be found in this diagram Equalizer is a tool for raising or lowering levels on different frequencies A graphic equalizer has pre defined bands Frequency area A parametric equalizer can be adjusted on a specific frequency Q value etc 35 of 37 Smoothing Connect Room Analyzer to your HIFI system Smoothing determines the resolution of the curves This is a balance depending on equipment as well as your individual choice With the highest resolution it is impossible to achieve a completely flat frequency response With smoothing the resolution can be lowered in steps so it is more equal with the resolution of the ear in the low area With a good listening room a competent system and good experience of sound the highest resolution can be used For people with less experience the recommendation is to use a lower resolution If Room Analyzer is to be connected to the system Front speakers Sub a Y cab
8. In the window you can find the modes the software has found and the recommendations for countermeasures nAverages 4 UdB Referred to XTZ 99W12 DSP or other subwoofers Result amott with PEQ 3ppo Modes smooth stimulu 3 pp Use IHJ Q G dB Meas smooth Ynnn T Smoothing Smoothing determines the resolution of the curves This is a balance depending on equipment as well Gb as your individual choice Result smooth With the highest resolution it is impossible to T achieve a completely flat frequency response a Meas smooth 2 ppo 3 ppo and 6 ppo is the option ppo part per octave Stimulus EQ Only visible in advanced mode Stimulus EQ Values are suited for XTZ 99W12 The Room Analyzer proposes some values for use DSP or other subwoofers with PEQ with a PEQ Parametric EQ these values can be copied to Stimulus EQ window If making a new e ay eT measurement with the Stimulus EQ the result i ee o would be like using a PEQ Clear Stimulus EQ Stimulus EQ Only visible in advanced mode 14 of 37 Store curve Full Range Fesul Modes Et Measured An option to store 4 curves on the screen at the Free smoath Roo time Essen Excellent tool to have when comparing different Meas smooth settings and or placements of the speaker Gives you the result direct on the screen Overlay A click on Show turns on off the curves
9. XTZ ROOM ANALYZER PRO Software for room analyzing and measuring frequency response a mis nessa a E U SCI i iia i a N A e eS 2009 XTZ AB www xtz se Introduction About XTZ Technical presentation Preparations Basics of sound Installation and placement tips Mounting and connecting Functional reference Area of use Measurement Frequency response RTA Room Analyzer e 1 Position measurement e 3 Position measurement Spectrogram Advanced features Full Range RT60 Technical explanations Technical specifications Service amp Support 2 of 37 Page O N OF A O 10 11 17 18 20 21 25 21 23 26 28 29 32 33 35 35 Introduction Congratulations to your purchase of XTZ Room Analyzer XTZ Room Analyzer provides many possibilities in order to utilize this product in the best way please read the manual carefully before using Room Analyzer It takes patience to optimize a hifi system If you lack experience from this kind of measurements or have any questions please contact our free of charge support Support info on the last page of the user manual 30137 Philosophy XTZ Goals Contact Our reference and ambition is to reproduce a natural sound keeping in mind that acoustics is always a matter of taste With Room Analyzer this goal is easier to achieve Our main goal is to provide the best value for money Our concept Cut the numbers of middleme
10. contrary produce hard reflections that may lead to a blurry dialogue Apart from colouring the sound the perspective of the sound will also deteriorate Reflections from the room can roughly be compared to the reflections that cause ghost pictures on a TV screen When a loudspeaker is placed near a wall or floor lower frequencies will be amplified sometimes in a not desirable way since it may lead to indistinct sound reproduction This amplification becomes even more obvious if the loudspeaker is placed near a corner However sometimes this can be desirable and it is important to have good knowledge about floors walls and ceilings There are constructions specially developed for placement near walls according to the instructions Be aware that furniture may vibrate creating disturbing sounds and rattles at loud levels Quadratic rooms or rooms where the length is exactly twice as long as the width should be avoided since they may create unwanted resonances The way the loudspeakers are placed towards the listener is of great importance In order to get the best results the front speakers should be placed symmetrically in front of the listener The distance between the front speakers should be about 80 of the distance to the listener In other words the recommended angle between the front speakers should be 45 You can place the loudspeakers angled in towards the listener or straight ahead 8 of 37 Correct
11. e to correct Change of the sweet spot or speaker position is recommended in this case peak An extreme dip is shown as a valley in the frequency response measurement dip 1 Position When optimizing the sound without measurement compromising 1 position measurement should be used Ex A high end system in a 3 Positions room with good acoustics measurement Average 3 positions The risk with 1 position measurement is that the sweet spot could be in a dip Sometimes it is impossible to compensate for without having other problems One solution is to change the sweet spot and or move the speakers subwoofer Control measurement or measurement of the speaker or specific positions in the room Use 1 position measurement In normal case the recommendation is 3 positions measurement The measurement is made on 3 positions in the room to give a more accurate result finding the room modes easier Correcting the main modes in the room gives a better average listening result Parametric EQ 99W12 DSP helps a lot working on the main modes Use both methods and compare the results to find what s best for your room Spectrogram Shows how long time it takes for the intensity of the sound has reduced to a certain level All room has a certain reverberation time A long Reverberation time affects the sound A hard hand clap and the following echo is an indication of Reverberation time 34 of 37 R
12. g number 1 amp 3 active The volume is set by adjusting the knob to the right A Mieden higher spl level often produces better measurement accuracy a L J 6 L Output Level 31 of 37 Start The measurement starts by pressing Measure Full Range 4 sweeps follows and the measurement is done measurement This gives you results in form of frequency response curves where you can view the curves with different time windows RT60 information the reverberation time of the room acc to IS03382 And the waterfall diagram in 3D or 2D 60d v Waterfall Overlay mem 2 Gow DEE Room Analyzer RTA Full Range When measurements are done at further distance at lower frequencies dips are likely to occur These are the phase cancellations that depend on the room itself microphone and speaker placement Measurements on loudspeakers in lower frequencies 20 500Hz should be done at close range 0 50cm to get an accurate result At distance over 50cm the room will effect the measurement a lot The different between close range measurement and from a distance is the influence from the room To get an accurate evaluation of all the presented information knowledge and experience is a must but feel free to ask us anything if you have any questions 32 of 37 Reverberation time T The most important room parameter is the reverberation time T It is defined as a time interval required fo
13. he complete frequency range Room Analyzer High resolution 1 or 3 position high resolution measurement 1 position measurement For optimizing the sound without compromising 1 position measurement should be used Ex A high end system in a room with good acoustics The risk with 1 position measurement is that the sweet spot could be in a dip Sometimes it is impossible to compensate without having other problems One solution is to change sweet spot and or move the speakers subwoofer 1 position measurement can be used for Room Analysis Frequency response Frequency response on a speaker Reverberation analysis 18 of 37 For users with PEQ options Room Analyzer finds the largest and most significant room modes The reason for not finding all existing modes is that the number of suggested PEQ filters will then be infinite The additional info corresponds only to 1 position measurement If you are not satisfied with the resulting frequency response the High resolution measurement can be repeated More PEQ filters can be added to achieve a better end result You can also use the function Manual adjustments of curves described under Advanced functions This requires more PEQ filters being available 3 position measurement In normal case the recommendation is 3 positions measurement The measurement is made on 3 positions in the room to give a more
14. height Cables Background noise Finally By angling the loudspeakers inwards you decrease unwanted reflections enhancing the stereo perspective If the loudspeakers are small they should be placed on stands or tilted so that they are on the same level as the ears Some speakers have other recommendations from the manufacturer in that case follow those Try to keep cables as short as possible By its electrical properties a long conductor will have more influence on the sound than a short one It may also work as an antenna receiving various signals that may become a constant noise in an active subwoofer Make sure that all connections are clean and not oxidized All connections should be mechanically stable both power signal and loudspeaker cables Signal cables should be separated from other cables Important External noise from trucks train traffic etc can easily disturb the measurement process Ifthe measurement result looks strange in any way you should do the same procedure again once or maybe twice If you get the same result again you can be sure that it is correct Please remember that good sound is a matter of taste so you have to experiment to obtain your personal goal We wish you best of luck 9 of 37 Placing the microphone Mounting Connections and connecting Download the software from our website and install it according to the instructions Connect the microphone t
15. icking on the right side see picture e Measured Blue curve e Modes EQ Green curve e Result White curve The standard curve the blue is the measured frequency response 80 21 of 37 Acton Meas Modes EQ Iw Measured The green curve shows the frequency response for room modes and EQ adjustments Recommended in Found Room Modes The values in Found room modes are those who are shown in the green curve Result Wo Measured The White curve is the theoretical frequency response after using PEQ settings On the chosen spot Result The picture shows both measured frequency response and the theoretical curve m Hesu Modes E0 W Measured Result 7 ModestEQ iw Measured h Ave rages 4 0dB Result smooth E ppo Modes smooth E ppo Meas smooth E ppo Smoothing determines the resolution of the curves This is a balance depending If another resolution is wanted use smoothing 2 3 amp 6 on equipment as well as your ppo points per octave can be chosen individual choice Only shown in Advanced mode 22 of 37 Room Analyzer High resolution 3 Position measurement Start the measurements Click on measure to start 3 Positions measurements The square Average 3 positions should be marked To obtain a good result the measuring spots should not be very close to each other Place the
16. ifferent curves Choose by clicking on the right side see picture e Measured Blue curve e Modes EQ Green curve e Result White curve The standard curve the blue is the measured frequency response Modes EQ W Measured The green curve shows the frequency response for room modes and EQ adjustments Recommended in Found Room Modes The values in Found room modes are those who are shown in the green curve 80 Result iw iM odes E g W Measured 24 of 37 The White curve is theoretical frequency response On the chosen spot Result How it would look if the values from Found room modes are used with PEQ The picture shows both measured frequency response and the theoretical curve 80 Only shown in Advanced mode If another resolution is wanted use smoothing 2 3 amp 6 ppo points per octave can be chosen 25 of 37 Modes EQ W Measured Result T Modes EQ i Measured hn Averages d PAP Result smooth epp x Modes smooth Sppo x Meas smooth Smoothing determines the resolution of the curves This is a balance depending on equipment as well as your individual choice Spectrogram In the little window up to the right the reverberation time is shown in the spectrogram Double click Double click to change place of the information The Spectrogram shows a colour spectrum of frequency magnitude a
17. le is need Connect the y cable to a free line input AUX TV on your system 36 of 37 Microphone Bandwidth Filter Measurement method Service amp Guarantee Support USB microphone adjusted to flat frequency response 16Hz 20kHz 20 20000 Hz RTA 16 250 Hz Room Analyzer 20 20000 Hz Full Range Parametric EQ with variable Q Chirp log sine sweep and FFT If you need service contact your local dealer ALWAYS pack the product part very You are always welcome to contact usifyou carefully Unfortunately damages have problems with product by e mail during transportation are very common If the packaging is SUD POPEO ALRE insufficient the transporting company does not compensate for damages Always enclose a copy of the receipt and a description of the defect Webpage www xtz se Please contact our free of charge support if you need installation advice or if any problems occur during the installation Measurements and curves can be hard to interpret Send us a mail and we will help you to analyse the result Contact us by e mail support xtz se and include your phone number if you require help and we will ring you back There is a Macromedia Flash instruction on the website http www xtz se 370137
18. n Put more money into product quality and less on advertising Cost effective manufacturing in large volumes Provide perfect technical solutions Website www xtz se E mail info xtz se 4 of 37 Technical presentation Why a room analyzing software Why a room measurement software The fact that the room adds colouration to the sound is known but it is often brought out of the light because it is hard to handle with conventional products Every room has unknown and unique acoustic characteristics that affect the sound quality The biggest problems are in the low frequency spectrum A normal not acoustically treated room has several resonances and dips in that spectrum caused by so called standing waves Depending on the listening position these produce incorrectly balanced sound Symbolic picture The frequency response of a good loudspeaker should be in the range of 3dB but a normal room can introduce variations of 15dB This leads us to the conclusion that even a very good loudspeaker can sound poor in a bad room Most regular rooms suffer from severe acoustic problems Regardless of the cost of the system you always have use for this instrument helping you to optimize your system Room Analyzer provides an advanced analysis as the name indicates of the problems that exist in the room system Symbolic picture If you spend a great deal of money on your system it is our experience tha
19. nd time It could be called a 2D water fall The spectrum shows the reverberation time An uneven spectrum shows a non linear frequency response Laggings are proof of long reverberation time in the room The different information can be seen by choosing Result Modes EQ Measured DP Modes E0 MW Measured Two examples A bad room with long reverberation time substantial room modes File View Setup Help SR 70 65 j 60 55 L 50 ps 46 40 im fee 36 e 30 dB 16 315 63 125 He 250 Vi Output Level Mi 53 49 6 24 00 Mode m2 108 36 6 16 75 Mode Stimulus EQ Use f Hz Q G dB t ms 0 0 PR Load Clear Stimulus EQ Copy Room Modes Save A good room with short reverberation time and decent frequency response Use f Hz Q G dB Type 7 Result FE E E A oes E M2 43 8 0 3 36 EQ Measured M3 66 8 0 330 EQ M4 24 80 494 EQ Result smooth 3ppo v Modes smooth 2ppo aae e Meas s ooth Stimulus EQ 3 ppo Use fiH Q G dB t ms 50 0 gt Store Ci Load Clear Stimulus EQ f Copy Room Modes Save ee Room Analyzer RTA SPL Time 159 6ms Freq 95 89Hz Mag 66 1 1dB 26 of 37 Found Room Modes Export to XTZ 99W12 DSP Stimulus EQ Final adjustments with RTA Full Range The Found Room Modes are presented here
20. o the USB port on your computer The microphone can be connected directly to the computer or to the base if you need a longer cable Connect the RCA cable to the RCA connector on the microphone or by the connectors in the base to an input AUX TV IN on the amplifier or low level input on the subwoofer Sound cabel Microphone from Sound cabel to amplifier and or subwoofer If Room Analyzer is connected to the system Front speaker sub a Y cable is needed Connect this to AUX TV or any other input Front speaker sub should be connected when the final adjustments are being made by Frequency response RTA This is needed to see how much the front speakers add to the measurement Restart the computer Room Analyzer High resolution The microphone should be placed in the height of 70 110cm from the floor Frequency response RTA When measuring the full frequency span the microphone should be pointed towards the speaker The microphone is sensitive of directions over 5kHz 10 of 37 http www xtz se The amplifier subwoofer should be turned off while connecting the microphone CD R TAPE IMD DVD LD Main windows FR Untitled XTZ Room Analyzer Pro Fie View Setup Help ee as v 5 Found Room Modes Died Level Use fH Q GIB Twe Rent Result smooth 6 ppo v Stimulus EQ Spo v Us fH Q G 8 O veday Bi Ee gt Clea Stmk EQ CopyRoomModes U
21. of the reference level for each frequency Change the scale with the dropdown menus to the right Perfect to use as a constant frequency response meter when trying to find a good placement for a subwoofer or speakers adjustment of GEQ Graphic EQ Export There are two ways of exporting the RTA values to XTZ Export 99W12 DSP either by the EXPORT button which is Si accessible after 7 8 seconds or by the quick links in the menu The export function can be used in three ways File View Setup Help ROOM The PEQ settings are exported WHainaa RTA The GEQ settings are exported BOTH Both RTA and ROOM are exported a OBS When doing room analyzing the RTA measurements should be done after the room analyzing 20 of 37 Start the Click on measure to start measurement 1 Position measuring Unclick Average 3 positions Click on Measure and the procedure starts Room Mode Measurement A Instructions Move the microphone to the listening position as shawn in the icture Left Speaker cabanar Right Speaker Then press Measure Mic es Cancel Room Analyzer After a short while of calculations the result is presented In the main window the frequency response is now shown To the right in the smaller window the reverberation time is shown A double click in the main window and the information in the windows changes There are three different curves Choose by cl
22. om effects phase errors and reflexes are 50d Me clearly visible Raw Unfiltered data 300 ms Full FFT L Bro Allinformation is displayed without any filtering Every little detail reflex and phase cancellation is visible This measurement has the highest resolution Waterfall diagram CSD 300ms slice total l ngd p 200ms sliding CSD There are three different 3Dviews available Right Front amp Left and a 2D view In the 3D chard the X axel is showing frequency The Y axel is showing the magnitude and the Z axel is showing the time In the 2D Chard X axel is showing frequency and Y axel is Showing the time The second X axel to the right is showing the magnitude 30 of 37 Overlays Volume settings Overlay 1 Show 1 2 Show 2 3 Show 3 4 Show 4 Full Range measurement offers the possibility of having 4 curves stored on the screen Storing a curve is easily done by clicking on 1 2 3 or 4 in the overlay area It is only the last measured curve that can be stored Ifyou want 4 measurements stored and then make a 5 th measurement Press Ctrl N to prepair for a new measurement without losing the 4 th curve Ifyou want to store a curve on a taken overlay just press the number and replace it To show or hide a measurement click Show 1 Show 2 Show 3 or Show 4 to show or hide it Oyerlay 1 Show E 3 Show 3 E Picture showin
23. oom Analyzer Modes EQ RTA Full Range EQ PEQ A short reverberation time is always better In the midrange and tweeter this can be obtained by adding curtains and carpets in the room Room Analyzer shows the frequency response With the highest resolution it is Blue curve with high resolution impossible to get an absolutely flat frequency response Therefore you can adjust the resolution in different smoothing steps This represents more than the ears resolution The hearing resolution is personal It shows the exact response down to each frequency That is why all defects are revealed with this resolution The resolution can be set to different levels Smoothing Room Analyzer shows the Room modes green curve Room Modes are caused by the room and the ideal is trying to remove all modes The calculated value is shown in the white curve If 99 W12DSP is used the response will be as the white curve MODE Room Modes Is the first priority for Room Analyzer EQ A peak dip that needs treatment MODE Is a Room Mode that Room Analyzer has found This is the first priority for the program If there are less than 5 found modes Room Analyzer will analyze the possibility to use EQ to fix the curve EQ A peak dip that needs treatment In second priority for Room Analyzer The RTA shows the frequency response in Real time The RTA shows the energy with 1 3 octave resolutions not as high a resolution as Room
24. ponse from the measurement Time window options are Anechoic Ambient amp Raw Water fall can be shown in 3D and 2D Output level Adjusted with level control The signal level shows to the right of the control The level should be on green Red too high Blue Too low Measure Start the measurements By clicking on the Measure button you start the measuring procedure Measuring window Room Analyzer x Room Mode Measurement Instructions Move the microphone to the listening position as shown in the picture Left Speaker Right Speaker Then press Measure Average 3 positions Es Subwoofer Cancel 1 position measuring With Average 3 positions unmarked it is a one position measurement in the sweet spot or specific 13 of 37 Room Analyzer ATA Full Range L Output Level 10 place Room Mode Measurement Instructions Place the microphone to the left in the room as shown in the Left Speaker i picture Right Speaker Then press Measure Mic Subwoofer Iv Average 3 positions Measure Cancel Symbolic picture of the 3 measuring positions a positions measuring Mark Average 3 positions it gives an average value calculated and measured on three positions Outpul Level Found Hoon M odas Use f Hz Q G dB Type V1 54 10 0 20 00 EQ M Mades EQ Iv 2 104 10 0 10 00 EQ Iv Measured Room Modes
25. r the sound energy to decay 60 dB after the excitation has stopped To get the reverberation time RT we need to measure the energy decay curve after the sound source is switched off The energy decay curve is a irregular and noisy curve that usually approximate with linear decay To get a RT60 measurement the excitation needs to be at least 60db above the noise level Normal noise level in a room is 40dB To get a reliable T6o value there needs to be a sound level of at least 100dB r dB 40 G0 RT 60 Show Scale range EEE Cia The RT60 is shown according to the ISO3382 standard Reverberation time is normally measured between 125Hz amp 4000Hz Reverberation below 125Hz is normally called room modes At lower frequencies the result is unsure and for frequencies above 4000Hz the air absorption is essential to the result of the measurement In the bass area Room Analyzer tab is better to use This measurement has a higher resolution The trends of the frequency above 4000Hz are similar to the result of 4000Hz 33 of 37 Room Modes Room modes appear due to sound reflexes in the room Direct sound and reflexes makes a pattern in the room and when same frequency is in phase you get room modes Standing waves Dips If the frequency is in counter phase it produces dips in the frequency response nodes If extreme dips are found by Room Analyzer 1 position measurement it may be impossibl
26. s manufactured to match our requirements and the software has built in corrections for the deviations in frequency response The software is specially designed for XTZ by a well established audio software company The software can be downloaded from our website Size 1 Mb 6 of 37 Minimum system P3 1 GHz 1024x768 resolution 256 colours Windows XP 512MB ram http www xtz se If no file download is possible we will provide you with a CD Unpacking Accessories Installation Check that all items are included 1pcs Microphone med USB contact 1pcs Base microphone stand with USB contact 1pcs RCA cable 5m 1pcs Male male adapter RCA 1pcs RCA Y cable User manual Download the software from XTZ website and follow http www xtz se the instruction of the installation 7 of 37 In which room do you achieve the best sound Reflections Amplification of bass frequencies Furniture Room dimension Placements of speakers Front speakers Angling This chapter contains general information about loudspeaker placement and installation These are general rules so there may be exceptions Regardless how good the equipment is in the wrong listening environment it will inevitably sound poor There are some basic rules concerning proper loudspeaker installation Carpets curtains and soft furniture absorb mid range and high frequency sounds and this is preferable Big empty areas on the
27. secure measure to find the room modes easier Weight 30 40 30 on the measuring 3 positions measuring can be used for e Room Analysis e Reverberation analysis Frequency response Full Range A measurement 20 20000Hz which gives the complete frequency range This is done with sweep instead of noise as in RTA measurement Time windows options are Anechoic Ambient and Raw RT6o information of the reverberation time is given acc to ISO3382 19 of 37 Room Mode Measurement Left Speaker SOBRE _ O Mic Right Speaker Mic RTA Ha Room Analyzer RTA A P A emma RTA measurement is a full range measurement At frequencies over 5kHz the microphone is more sensitive for directions and should be aimed towards the source Click on the RTA tab Click on Measure to start the measuring process and stop it by clicking on Paused The RTA displays the frequency response in real time and shows measured levels with 1 3 octave resolution RTA has not got as high a resolution as Room Analyzer but it gives a good opinion about the hearing sound in average perfect to use as a constant frequency response measuring unit when adjusting the position of speakers or adjusting a graphic equalizer There is a listener mode Click on Listen to activate it This mode is not suitable for adjustments Each bar shows the level on a fixed frequency Below the bars is information
28. t it is a must to optimize the room or remove the problem with DSP technology Ex 99W12 DSP For this kind of work Room Analyzer is perfect A comparison with cooking Using a timer and a thermometer helps obtaining the same perfect result every time Room Analyzer gives a picture of which frequencies in the bass region cause the problems and hints of how to correct them Room Analyzer can measure the frequency response of any speaker Room Analyzer provides more analysis 1 Frequency response with Room Analyzer 16 250 Hz a Find room modes b Reverberation Time diagram Time Frequency Level c Simulates the use of PEQ Parametric Equalizer 2 Frequency response with RTA Real Time Analyzer 20 20000 Hz 3 Full range measurement a Full range measurement FFT 20 20000 Hz b Waterfall 3D 2D c RT 60 measurement 5 of 37 Computer System demands Microphone Software The analysis render the following areas of use e Give exact values for compensation for the room modes to a subwoofer with PEQ ex XTZ 99 W12 DSP e While adjusting placements of speakers subwoofers e While optimizing the room with absorbents diffusers sound traps and more e Measuring speakers subwoofers The system is based on PC technology The system demands are Win XP Room Analyzer works on Vista but is recommended to run on XP Room Analyzer can be run on Mac Under Bootcamp or Fusion with XP The microphone i
29. uency response at the specific time 0 250 ms is now shown in red This explains why the frequency response may seem unsatisfactory even after being adjusted with PEQ and GEO at the time zero The other way around a perfectly straight frequency response may not be ideal since noise and defects appearing later than time zero affect the reproduction The experienced frequency response equals the sum of the energy over time at each frequency as displayed by the RTA 28 of 37 Full Range Working areas The Full Range tab contains a high resolution full frequency measurement option You can choose how the data will be presented l E Room Analyzer RTA Full Range The tab also displays a 2D 3D waterfall where the measurement can be seen as function of time O 200ms Lasar File View Setup Help Wie ea mm _ Room Analyzer RTA SPL The Full Range tab has a split user interface By clicking on the grey area between the two measurements and drag you can alter the size of the working areas File View Setup Help Woe sm Room Analyzer RTA SPL 20 0f 37 Views There are three different graphs that can be shown The different between the graphs are the time window settings Default view is Anecoic Anechoic Non reverb 300 4 ms Multi Win Displays the results with limited room effects Ambient Room information 300 8 ms Ambi Win Displays ro
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