User Manual for PCB v2, firmware v4.3
Contents
1. Turn that channel s Cycle on or run a different clock into QNT Play with Div Mult Use the OR out or run its ENV out to modulate another sound or perhaps a second aspect of the same sound If you can play with the pulse width of the module feeding QNT jacks the SCM Breakout has a PW knob and jack as do many VCOs and LFOs Longer PW means more repeated notes Another technique Patch Tap Tempo Clock output to a clock divider multiplier module e g SCM Run a fast output to PING e g x6 Run a slow output to QNT e g x2 Turn Cycle off Adjust Div Mult e g and try different outputs from the clock divider multiplier module until you get interesting rhythmic patterns Ratcheted quantized beats Control the repeat rate of each note in a sequenced bassline Clock a sequencer and run the same clock into Ping Presumably one CV output from the sequencer is controlling the pitch of your bassline Patch a different CV output of the sequencer into Div CV Turn Cycle on or run the sequencer s Gate output into the QNT jack Set each step to a CV value that corresponds to the number of repeats you want for that particular step For example suppose you have an 8 step sequence and you want notes to be played once for every step until the last note which you want to be repeated 8 times and played 8 times as fast set the sequencer steps 1 7 to OV output and step 8 to 5V Page 9 If you want to control the number of times the note repeat2. module independent of whatever s happening with the envelope That is the TTC will run steadily no matter how you ping the channel or set Div Mult or re trigger Cycle Skew etc The only thing that will change the TTC is physically pressing the Ping button One common use for this is to simply patch EOF TTC into the other channel s Ping jack Now the channels are synced to your tap tempo Or patch the EOF TTC into a clock divider multiplier patching one of the clock outputs back to the same channel s Ping jack The remaining clock outputs can be used to keep your other modules in sync with the Tap Tempo clock on the PEG You can change the Div Mult settings on the PEG or start and stop the PEG s envelope and your Tap Tempo Clock will keep running steady Async vs Sync Mode There are two main modes the PEG runs in Sync mode and Async mode The two modes effect the way the envelope is sync ed or not to the Ping clock The difference between the modes is easier to see when the Cycle button is on How to change between modes When the PEG turns on it starts in Sync mode e To enter Sync Mode Give a trigger gate into the QNT jack e To enter Async Mode Give a trigger gate into the Async jack e Tip lf you don t have an external trigger module handy an quick and dirty way to switch modes is to momentarily plug QNT or Async into any jack that has a light on or flashing ENV 5V ENV EOR EOF Half R Differences between modes
3. P E G Patch a Basic Walkthrough Step 1 Prepare the PEG e Unplug all cables from the PEG turn the Div Mult Skew and Curve knobs to center 12 o clock turn Scale all the way up and make sure the Cycle and Bi polar are off not lit up Plug the ENV jack on the red channel into something you want to modulate perhaps a filter or the pitch of an oscillator Step 2 Set your Ping time _ Before the PEG can generate an envelope you need to supply a Ping time The Ping time is the basic reference that determines the timing of the envelope e Tap the red channel Ping button two or three times about a second between taps It s easier to see what s going on with a slow envelope The white Ping button should be flashing at the tempo you tapped If you gave a third tap the time between the taps will be averaged unless the third tap occurs more than 50 different than the timing period of the first two taps e You also could run an external clock into the red Ping jack when a gate is received on the Ping jack the internal tap tempo clock is stopped Step 3 Provide a trigger source 7 Like any envelope module the PEG will produce an envelope when it receives a trigger Also like many envelope modules it can be set to self trigger so that it ll cycle without any external trigger e Press the red channel Cycle button it will light up green Notice the white LED above the ENV jack starts flashing The envelope is now running fr
4. When Cycle is turned on envelope starts immediately Holding a high gate causes a outputting instantly from a point in its cycle sustain period followed by a fall period when such that it s in sync with the divided ping clock the gate goes low ASR envelope Blue trace indicates cycle button ON or OFF Page 5 Skew Skew is the ratio between the rise and fall times slopes Unlike most envelope generators in the PEG the total envelope length is held constant when the skew is changed thus allowing you to change between ramp up ramp down triangle and everything in between without altering the timing See Figure 6 If Skew is changed while an envelope is running the curve will update immediately Some funky outputs can result from this See Figure 7 Skew Limiting Normally the fastest rise time is 10uS fastest fall time is 200uS This can sound great into an LPG LPF or modulating all sorts of things but it s fast enough to cause an audible click into some highly responsive VCAs such as the 4ms VCA Matrix Obviously if you back the Skew knob off from the max minimum settings the skew will be reduced enough to avoid popping However if you are modulating skew with CV it can require some careful attenuation to prevent popping A shortcut solution is built into the PEG s System Mode When Skew Limiting is enabled the fastest rise or fall time allowable will be 6ms which is slow enough to prevent VCA popping See the System Mode section fo
5. attacks and varying decays log gt expo Figure 8d Once a rise or fall segment has begun the shape will not change until the segment ends However applying a pulse on the QNT jack or turning the cycle button on will force an immediate update of the curve shape Figure 8a Curves 1 5 igure 8b Curves 5 9 Asymmetrical curves with expo attacks Symmetrical curves expo to linear Prerrrb ptt Pt bbb pbb bier bet bb bbb Pe ben a oe aa Figure 8d Curves 13 17 Symmetrical curves linear to log Asymmetrical curves with log attacks Page 6 Envelope Outputs Main ENV 5V ENV OR Each side of the PEG has two outputs a scaled output labeled ENV and an unscaled output labeled 5V ENV Additionally there is a shared output that s the arithmetic OR of the scaled outputs The Scale knob and Bi polar button only effect the ENV and OR output jacks o With Bi polar off If the scale knob is right of center the output will be positive only from OV to a maximum of 10V Left of center the envelope inverts and is negative only from OV to a minimum of 10V o With Bi polar on Scale knob right of center the output will rise from negative to positive then fall back to negative voltage maximum range 5V to 5V Scale knob left of center the output starts positive and rises to negative voltage then falls back to positive voltage o In any setting Scale knob in the center will produce no output o The Bi Polar button is a
6. outputting an envelope from a point such that the envelope will end on the next expected ping clock think of it as if the envelope has always been running in sync to the ping clock and turning on Cycle un mutes it See Figure 5 o In Async mode the envelope will start from 0 e T jack Cycle Toggle When a gate is applied to this jack both channel s Cycle buttons will toggle state on gt off and off gt on When the gate is released they will revert to their previous state The T jack is useful for toggling between the two channels set one channel in Cycle mode and the other channel to non cycling and take the output from the OR jack see Outputs section below The T jack is also useful for turning both channels on off at the same time Figure 3c QN T trigger used to re phase Pere erc Derlenen Blue channel top and Red channel bottom n 3 te Ll both set to 4 pinged by same clock Blue is opi ONT tri t ci 6 3b Q Ae ye re phased twice with QNT trigger Envelopes pplying a rigger causes an envelope to Cycle on and Div Mult a start in phase then Blue lags by 90 then output at the next ping clock ping clock not Bottom trace is ping clock i shown in figure Holding a gate high causes On the next ping clock after P ale TO PRERE DAE OEG the envelope to repeat applying a QNT trigger the envelope resets Figure 4 Pressing Cycle button in Sync mode Trigger causes an envelope to start re start
7. rise X Ji ma Je and fall Of course you can modulate these parameters with the CV jacks at the bottom a Skew a Curve Step 7 Play with it Try triggering the blue channel with the red channel e Now plug the red EOF end of fall jack into the blue Ping jack Turn the blue channel Cycle button On Run the blue channel ENV jack output to modulate something else Set Scale and Bi polar as desired Step 8 Modulate the blue channel with the red channel e Make sure the blue Ping Div Mult knob is set to and patch the red 5V ENV jack into the blue channel s Div CV jack Set the red channel Div Mult knob to something slow The blue channel should speed up slow down in time with the red channel s envelope Keep going play with the T jack try clocking both channels the same and hitting different triggers into the QNT jacks play with off time triggers into the Async jack while the channel is in Cycle mode modulate each channel with the other or themselves etc etc Have fun Page 3 Ping and Tap Tempo Ping is the core of the PEG every aspect of the envelope relates back to the timing established by the ping time There are two ways to set the ping time 1 2 Tap tempo button tap the white Ping button at least twice to set the timing o It s easiest to tap a tempo with Ping Div Mult set to This is because the tap tempo clock can be divided multiplied just like the external Ping clock For example if you
8. trigger jack and or Cycle mode e Outputs and scaling shifting e Scale knob is an attenuating inverter for main envelope output e Maximum OV to 10V non inverted e Minimum 10V to OV inverted e Bi polar button centers main envelope output around OV 5V to 5V output e 5V ENV jack is a non scaling output that always produces a OV to 5V envelope e OR jack outputs an analog OR mix of the two channels scaled envelope curves e Gate Trigger outputs e End of Rise EOR gate output goes high when envelope finishes a rise portion and goes low when envelope begins a rise portion Optional trigger mode e End of Fall EOF gate output goes high when envelope finishes a fall portion and goes low when envelope begins a fall portion Optional trigger mode e Half R Half Rise gate outputs 90 degree phase shifted gates that go high when 50 of the time of the rise portion has elapsed and goes low after 50 of the time of the fall portion this is different than a voltage comparator based design Optional trigger mode e Tap Clock Output enabled in System Edit Mode dedicated Tap Tempo clock output gate or trigger e Triggering cycling e Cycle button for each channel makes envelope self cycle LFO mode Button lights up when on e T jack toggles the state of both channels Cycle buttons while a gate is applied e QNT jack for each channel triggers an envelope to start at the next quantized beat with respect to the di
9. 4ms Pingable Envelope Generator Eurorack Module User Manual v2015 06 15 Firmware v4 3 PCB v2 0 PINGABLE ENVELOPE GENERATOR The Pingable Envelope Generator PEG from 4ms Company is a dual envelope generator whose envelope lengths are set by the time between clock pulses or pings The PEG has full CV control of envelope shape skew and ping clock division multiplication as well as a plethora of triggering and cycling options AD AR quantization cycle cycle toggle and a tap tempo button for each channel DOWNLOAD MOST RECENT MANUAL AT http 4mspedals com peg php Features e Basics e Dual pingable envelope generator total envelope time is set by time between pulses ping e Tap tempo button or external clock triggers sets the ping time e Two taps sets the tempo If a third tap is given close to the tempo to the first two taps the two timing periods will be averaged e Envelope time is a multiple or division of the ping clock from 8 to x8 set by Ping Div Mult knob and CV e Curve knob and CV control the shape of the output envelope Various combinations of exponential linear logarithmic and interpolated curves separately for rise and fall portions e Skew knob and CV control the ratio between rise and fall times without changing total envelope time e Fastest rise time 10us fastest fall time 100uUs Slowest rise fall time 15 min 30 min total e Envelope is triggered by Quantized trigger jack Asynchronous
10. PING button down for 5 seconds after 2 seconds the tap clock will clear keep holding it down All the lights except Bi Polar will flash o Version 4 1 4 2 and 4 3 four quick flashes 100ms then one long flash 500ms o Version 4 0 four quick flashes 100ms each o Version 3 five very rapid flashes 50ms each e Release the PING button e Tap the PING button a few times and notice how one light comes on at a time This indicates which feature you are editing Keep tapping PING to see that you can edit EOR Half R on blue channel EOF ENV or PING or EOR EOF Note ENV refers to the white LED next to the Bi Polar button and above the ENV jack e When a feature is selected pressing the Cycle button will switch between settings OFF Cycle light off DIM FLICKER Cycle light blinking slowly and dimly not an option for all parameters ON Cycle light on BRIGHT BLINK Cycle light blinking quickly and brightly not an option for all parameters o EOR red or Half R blue Selects EOR Half Rise and Gate Trigger OFF jack will output End of Rise Gates factory setting for Red channel DIM FLICKER jack will output End of Rise Triggers ON jack will output Half Rise Gates factory setting for Blue channel BRIGHT BLINK jack will output Half Rise Triggers o EOF Selects EOF TapClock and Gate Trigger OFF jack will output End of Fall Gates factory setting DIM FLICKER jack will output End of Fall triggers ON jack
11. V2 controls the brightness of the white LED above the blue channel s ENV jack Factory setting 50 BP Offset trim pots Each channel has a micro trim pot to adjust the DC offset when Bi polar is engaged The trim pot is very tiny and can be damaged if turned too far Do not adjust it unless you have a specific reason to do so and be very careful not rotate it more than 120 degrees from center in either direction there is no stop to prevent you from turning too far There is no clear visual line mark indicator to show what position the trim pot is set you must use a meter or simply remember where you ve set it The factory setting is center The trimpot has no effect if the Bi polar button is off Turning the trim pot up will add a positive DC offset to the output on the ENV jack when Bi polar is turned on Turning the trimpot down will add a negative DC offset Always turn the trim pot in small amounts about 5 or 10 degrees at a time checking to see if the output has shifted the desired amount and verifying that it isn t close to the rotational limit Page 11 System Mode system Mode is an advanced feature of the PEG that can be used to re assign the functionality of jacks and change operation in general It is only present in firmware version 3 and later Each channel red blue has an independent system mode that is changes made on one channel will have no effect on the other channel To enter System Mode e Hold the
12. ar trim pot as described in the Bi Polar section above Jumpers CLK BUS jumper Install this jumper to enable the PEG to receive clocks over the Bus GATE bus of the standard Doepfer power rails This is compatible with the QCD version 2 0 and later as well as the Makenoise CTRLSEL clock system For example if you have a QCD set to Lead Master mode on the same power bus as the PEG both channels of the PEG will sync to the QCD The PEG s CLK BUS circuit is fully buffered so you can drive dozens of PEGs and other 4ms modules with one QCD See QCD v2 manual page 8 5V source select jumper 5V SEL The Bus Clock can be overridden or disabled on either both channels of the PEG by plugging a cable into the Ping jack Each PEG channel acts independently in Jumper on INT 5V is created from the this regard 12V power rail factory default Removing the CLK BUS jumper will ignore all Bus signals Factory default is Jumper on EXT 5V drawn from 5V installed power rail LED DIMMER trim pots There are 3 trim pots for adjusting the brightness of all the LEDs and LED buttons All these can be adjusted to your taste e LED DIM MAIN controls the brightness of the Cycle Bi polar and Ping buttons orange and white as well as the EOR EOF and Half R LEDs blue and red Factory setting 50 75 e LED DIM ENV1 controls the brightness of the white LED above the red channel s ENV jack Factory setting 50 e LED DIM EN
13. ceives the trigger and will continue to cycle always starting half a second after each ping This is your async reset point half a second after the ping Hit another trigger just a moment before the ping Now the the envelope will always be starting just a moment before each metronome pulse Keep playing with it till it makes sense this is an advanced but very useful technique See Figure 13a Using skew div modulations to change the async reset point Patch the example above Try turning Skew back and forth as well as Div Mult Smooth huh Stop turning the knobs and notice how it s now starting at a different point relative to the metronome The reset point has changed to accommodate your knob wigglings If you were in sync mode it would have snapped back to starting on the ping clock But in Async mode it can start anywhere See Figure 2 and Figure 13b LETETI A TEELE TIN IR LETETI of 1 OO On Om ELIT IUEEUUA Figure 1 3a Async mode re triggering Figure 13b Async mode Envelope starts at the same point on the Turning Skew knob in cycle mode ping clock for the first 3 clocks it s Since the envelope is not locked to any point approximately the falling edge of the on the ping clock it may lengthen or shorten ping About half way through the figure to accommodate the user changing the Skew another async trigger is given and the parameter reset point becomes a little bit before the rising edge Beyond Mere Envelopes Advance
14. ck causes the envelope to repeat See Figure 3a The envelope will complete at least one entire cycle If a second QNT pulse is received while the envelope is running a second envelope will be generated If the channel is in Async mode triggering QNT goes back to sync mode o Re phasing with QNT If Div Mult is set to n dividing and Cycle button is on then hitting a trigger into QNT will re start re phase the envelope on the next incoming ping clock This can be useful for multi phase outputs e g Quadrature patch If you want the envelope to run freely without re phasing just use one or the other but not both QNT and Cycle or don t divide the ping See Figures 3b and 3c e Async jack Asynchronous Apply a trigger gate to this jack to causes the channel to enter Async mode An envelope will start immediately Holding a gate high will cause the envelope to sustain and then start the fall curve once the gate is released A S R envelope In Async mode the envelope does not sync to the ping clock However the envelope length is still determined by the ping clock See Async vs Sync section See Figure 4 also Figure 2 e Cycle Button Press the button to toggle Cycle mode on off When this button is lit up the envelope will keep running without needing any external triggers When the button is turned off the envelope will finish its cycle and then stop when it hits bottom o In Sync mode normal mode turning Cycle on starts
15. d PEG Patching Hopefully after reading this far into the manual and playing with your PEG you have a clear understanding of how to make a variety of timing dependent envelopes The following patches illustrate how the PEG s large assortment of inputs and output types can be used for a variety of purposes besides envelopes Clocking both channels with the same clock This is a common requirement of many patches Here s some ideas Mult an external clock and run it into both Pings Enable Tap Tempo Clock Output in System Edit mode and run EOF to the other channel s Ping Run multiple outputs from a clock divider multiplier and then mult divide on the PEG to make them the same tempo If your patch doesn t modulate Div Mult and one channel always will be running then you can run EOF into the other channel s Ping Complex pattern generator Use the PEG s quantization features to create complicated repeating beat patterns It s helpful to have a metronome or kick in the background at the steady master clock rate or slow division of the master clock Run a Shuffling Clock Multiplier x8 output or RCD 1 out into Ping Run another SCM output say S5 or RCD 3 into QNT Cycle Off Div Mult to Run the ENV output to open a filter try a 100 Skew triangle Curve If the beat pattern isn t groovy use a different clock output into QNT use the SCM s slip shuffle and adjust Div Mult To increase complexity run EOF into the other channel s Ping
16. eely in time with the ping clock Adjust the other module s you are running the PEG into so you can hear the modulation e You also could turn Cycle off and run a manual trigger into the QNT or Async jack e g try the Gate output from a Pressure Points or perhaps a slow clock output from an RCD SCM Step 4 Adjust your output level x e Adjust the Scale knob and or play with the Bi polar button to get a good voltage range that works well 4 C with whatever you re modulating with the PEG _ Scale Bi polar or a That s the basic PEG patch Ping Trigger and Output Now we can play with the parameters of the envelope Step 5 Set up your Division Multiplication amount PA Rte e Turn the Ping Div Mult knob to various settings and watch the Ping button flash faster and slower Notice is p how the tempo doesn t change gradually but instead jumps from speed to speed This is because each r61 1x6 speed is an integer multiple or division of the original tempo e g three times as fast or half as slow You ns onx7 also can modulate this parameter with the Div CV jack at the bottom Ping Div Mult Step 6 Adjust Skew and Curve N P o Fiddle with the Skew and Curve knobs to get an envelope shape you like Notice the curve Z N A N shapes in the center section of the knob are all symmetrical same rise and fall shape while i we K the shapes at the start and end of the knob s range are asymmetrical different curves for
17. es respond differently to gates and triggers If you are patching EOR EOF etc into a standard ADSR module you can omit the sustain portion by using triggers Or patching from the EOR EOF jacks into the Async jack a gate might give you a sustain portion but a trigger will avoid that e EOF vs Tap Tempo Clock TTC Usually you will enable this if you want to use the PEG as a master clock Another reason might be to sync both channels together e Skew Limiting See also Skew section You may want to enable this if you are hearing lots of popping when running into a fast responding VCA and or modulating the Skew to its extremes Note that the exponential and log curves can cause clicking as they are by their nature fast changing envelope shapes These shapes are typically used with a linear VCA as exponential VCAs often want to see linear curves With slower responding resonant modules such as a low pass gate the expo log curves and non limited skew shapes can be especially delicious Firmware Change Log PCB Change Log v4 3 Made Skew Limiting smoother less clicking v2 0 Added Clock Bus thinner profile no v4 2 Fixed Clear Ping on Hold minor bug fixes widened x1 snap area blue select jumper v4 1 Fixed Free running Ping bug added Async ASR AR system mode v1 0 6 Added LED DIMMER trim pots v4 0 Fixed glitching envelopes major bug fixes v1 0 4 v1 03 v1 0 2 Minor assembly changes v3 0 Added System Modes tightened timing
18. he CV Changing the Div Mult amount in the while an envelope is running will immediately change the slope and the slope will continue to track the Div Mult amount as long as it keeps changing If no change to the Div Mult or skew is made after a practically imperceptible duration of time about 50ms then the envelope will re sync to the ping clock based on the new Div Mult amount See Figures 1a and 1b o The except to the re syncing behavior is that in Async mode the envelope never re syncs to the ping clock See Async vs Sync section and Figure 2 Re syncing transitions are slew limited to prevent popping when running into a fast responding VCA PEPPPrrrrrrrrrrrperrrrrrrr rim preterm rr rr grr reer im payer Pa P a Slope of envelope tracks the Div Mult amount until the knob Notice the envelopes do not land on the Ping stops turning about half way across the figure at which point it clock envelope is not synced to the ping clock re syncs tothe ping clock Also notice smooth transitions between speeds Figure 1b Changing Div Mult with a sharp jump from x3 to Notice the envelope didn t touch bottom in order to stay in sync with the ping clock Page 4 Triggering Cycling the Envelope e QNT jack Quantized Apply a trigger gate to this jack to cause an envelope to start on the next ping clock The PEG will wait for the next divided multiplied ping clock and then start the envelope Holding a gate high on this ja
19. in Sync mode run a trig gt QNT Use a VCA or logic gate to AND the video Field Sync with a scrolling audio rate oscillator Patch that into PING You automatically get an LFO that s transposed to the visual scrolling speed of the pattern thanks to Lars Variation Run AND d sync into the QNT trig of the PEG Then run a different audio rate oscillator into the PING jack Cycle button Off It will still track the scrolling speed of the first pattern but the second oscillator controls scrolling within the scrolling Audio Harmonizer Sub octave and harmonic series from an audio input Run an oscillator into Ping input Cycle On Set your frequency shift amount with the Div Mult e g x2 will be an octave up x3 will be an octave plus a fifth 8 will be three octaves down etc Audio output from the ENV jack Scale sets your volume Skew and Curve set your waveshape timbre Keying Async will mute the signal Turning Cycle off and keying QNT will gate the signal Do this on both channels and use the T jack to toggle between harmonics taking the output from the OR jack Unplug one channel s Ping to let it slowly drift creating phaser swooshing sounds Run into a LPF with roll off at 10kHz for a less harsh sound Clockable Trigger Delay A trigger is fed in and after a delay which is determined by a clock a trigger is outputted Patch a trigger e g from Pressure Points gate output to the Async jack Patch a clock into the PING jack Set D
20. iv Mult to 2 Set Skew to center EOR will be your delayed trigger output actually is a gate as wide as the clock period Changing Skew will fine tune the delay time as well as output gate pulse width To get a true trigger output enable EOR trigger mode in System Edit mode Keyboard Tempo Tracking Play a keyboard and the repeat rate of the notes is defined by how fast you hit the keys Patch a keyboard gate into PING perhaps use the gate output of a MIDI CV module with a MIDI keyboard running in or a CV Gate keyboard or a Pressure Points Patch the keyboard CV to a 1V oct VCO Run the VCO through a LPG or VCA and use PEG s ENV out to open the LPG or VCA Turn Cycle on Find a nice sounding Skew Curve combination The tempo that you hit the keyboard notes will determine the tempo hit a key twice and it ll keep repeating at that rate Play faster and your repeat rate increases To keep patching run another CV perhaps CC controller CV from the MIDI module or a second row on the PP to control Div Mult or Skew and Curve Phase Shifting Variable phase shift two sets of events have variable amount of stagger Clock both channels with the same clock see first example patch idea Cycle on both channels Use both main envelope outputs to make sound open two VCAs perhaps Some options for setting the amount of phase difference e Manual trigger into Async jack on one channel For example to set the blue channel to lag by 25 90
21. level shifter before the scale inverter The amount of level shifting is controlled by a trim pot on the back of the module Factory setting is a shift of 5V thus OV to 10V becomes 5V to 5V One common use would be to set this to about 10V of level shift so that the output when Scale is inverting would be positive voltages but with an inverted waveshape In this way the 5V ENV jack and main ENV jacks will produce inverted copies of the same waveshape both uni polar The main output is the ENV output and its amplitude is controlled by the Scale knob and Bi polar button The 5V ENV jack always outputs a waveform that goes from OV to 5V The scale and bi polar controls have no effect on this This jack is useful as an auxiliary envelope output It s often useful to patch into the other channel s CV jack s to modulate parameters The OR jack will output the highest voltage value from either side s ENV jack at any given moment One way to use this is to think of the OR jack as a mix out and use the Scale knobs as level knobs and the Bi Polar buttons to bring down the relative level of a channel kind of like a mute button See Figure 9c Figure 9a Changing Scale Bi polar off Figure 9b Changing Scale Bi polar on Top traces are ENV as Scale is turned from max to min Bottom traces are 5V ENV Grid lines are 5V division PPP Prrrbrrrrrrrrrrrr rrr rrr rrr rrr rrr rer rrr rrr rrr rrr rrr rrr enis Figure 9c OR jack vs adding ENV outp
22. much easier to see with Cycle button on e Sync Mode This is the normal PEG mode The envelope is locked to the Ping clock it always starts and stops on the ping clock unless you are rapidly changing Skew or Div Mult in which case the PEG will snap back to sync when about 50ms have passed since any modulation change See Figures 1a and 1b in the Ping Divider Multiplier section e Async Mode In Async mode the envelope will try to start on the same point in time relative to the ping clock but this point of time called the async reset point can change With Sync mode this point in time is the divided multiplied ping clock itself but with Async mode this can be any arbitrary point in time in the ping s cycle This async reset point can either be set intentionally by hitting a trigger on the Async jack or it can just float into place if you Page 8 modulate parameters which change the envelope s landing point An Async envelope can be 0 to 360 out of phase with the ping clock which is useful for phase modulation O Using Async triggers to change the async reset point Try this patch supply a Ping clock that s about 1 pulse per second Use the same clock to make a sound with some other module using this as a metronome reference For simplicity turn Div mult to and Skew to about a sharp rise maybe 90 Turn cycle mode on Hit a trigger into Async about half a second after a ping The envelope will restart when it re
23. phase difference hit the trigger a quarter of the way after a red channel pulse Any phase shift amount is possible e CV Skew Changing the skew will change the timing that the peak of the envelope occurs Thus sweeping the Skew of one channel while holding the other steady will cause the envelope peak to shift in phase with respect to the other envelope s peak This only a perceptual phase shift e Quantized phase selection Slow each channel down to 8 Speed your clock up if necessary Give a trig to both channel s QNT jacks to make sure you re in Sync mode Turn blue channel cycle off Listen to the red channel and at a moment just before you want the blue channel to come in press the blue Cycle button on The blue channel s phase will be quantized to one of 8 possible phases 0 45 90 135 180 225 270 or 315 It helps to set a sharp attack on the red channel Skew at 100 so you can hear the timing better Cycle button can be turned off and back on to change phase again Use different Div settings for different possible phase shift amounts e g 7 gives 0 51 102 etc Quadrature patch 1 First you have to set up the phase difference between the two channels e The easy way Clock both channels with the same clock see first example patch idea and patch the blue channel Half R into red channel Async Turn blue Cycle on and red Cycle off Adjusting the Skew of the blue channel will Page 10 change the amoun
24. r pulses Note in System Mode you can disable this free running feature thus giving the PEG two external pulses will output just one envelope and then stop See the System Mode section o The Ping jack has no roll off but the main chip can process incoming clocks up to about 10kHz However it can only output cleanly up to about 1kKHz depending on your requirements for cleanly So you can divide an 8kHz clock down to a 1 0kHz triangle wave 8 moderately cleanly When outputting frequencies higher than 1kKHz the output will be noisy and glitchy but still responsive to the input frequency Below the 1kHz threshold the PEG can be used as a rudimentary harmonizer e g sub octave generator See Audio Harmonizer patch The maximum time of either envelope curve rise or fall is about 15 minutes total envelope time is 30 minutes Ping Divider Multiplier Once a ping time has been established you can then divide or multiply it from 1 8th the speed to 8 times the speed in whole number increments The resulting clock is called the Divided Multiplied Ping Clock or just Ping Clock for short Figure 1 a Changing Div Mult gradually slow knob movement Figure 2 Changing Div Mult in Async mode The Ping button flashes to the rate of the Divided Multiplied Ping Clock The Ping Div Mult knob sets the amount of multiplication or division of the incoming ping time along with any CV that s applied to the Div jack the knob sets the offset for t
25. r the procedure of how to set the Skew Limiting parameter it s the white ENV light Figure 6 Skew examples Skew knob was turned up a little bit in between each envelope Figure 7 Funky envelopes made by twiddling the skew parameter while envelope is running Curve The envelope shapes available in the PEG are formed by combinations of exponential linear and logarithmic waveforms In between each fully expo lin log waveform there are three interpolated waveforms formed from weighted combinations of each e g 25 log 75 linear The waveforms can be symmetrical e g linear rise amp linear fall or asymmetrical e g exp rise amp log fall See Figures 8a 8d The curve is selected from one of 17 using the Curve knob and CV jack the knob sets the offset for any applied CV Look closely at the artwork around the Curve knob on your PEG to see how the curves are arranged Asymmetrical curves are at the extremes and symmetrical curves are in the center As you turn the knob from 0 to max clockwise the curves change like this e First 4 curves are asymmetrical with exponential attacks and different decays log gt expo Figure 8a e Next 4 curves are symmetrical ranging from exponential to linear in 4 interpolated steps Figure 8b e Middle Curve is linear triangle wave e Next 4 curves are symmetrical ranging from linear to logarithmic in 4 interpolated steps Figure 8c e Last 4 curves are asymmetrical with logarithmic
26. s e g 8 times as fast but only hit 4 times you can use a sequencer with variable pulse width for its gate output patched into the QNT jack or another module to change the pulse width e g Seq Gate gt SCM In and SCM x1 gt PEG QNT playing with SCM s PW knob Alternating Skew or div mult Enable Tap Tempo Clock output Unplug any external ping Tap a slow tempo with the Ping button Turn Skew to 0 Turn Div Mult to x8 Turn Cycle on Patch EOF to Skew CV You will get four pulses of ramp up saw followed by four pulses of ramp down saw Try patching into Div CV or Curve CV instead of Skew Try running EOF through an attenuator before back into the PEG Self oscillation self patched Very chaotic interesting noises Needs a human to fine tune the settings Soend some time on this one Patch EOF to Ping Patch ENV output to your audio mixer Set Div Mult to between and x2 adjust this very slowly throughout the patch Cycle On Scale will be your output volume Skew and Curve effect the timbre heh Give PING a few taps to get it started More advanced Do the basic patch to both channels with both ENV outputs going to an audio mixer or just listen to the OR output Now patch Half Rise into the T jack Play with Cycle button settings Keep patching each channel into itself and or the other Try running one channel s output to control a filter the other controls a VCO running into the filter Video scroll sync Make sure you are
27. t of phase shift from 0 180 50 skew will be 90 Note Half Rise output should be in trigger mode or you may get a trapezoidal waveform on Red e Another way just for kicks Clock both channels together and set both to 4 Give both channels a QNT pulse so they are in Sync mode Using the same technique as described in the Quantized phase selection patch above hit the Cycle button at the right moment so that one channel is 90 degrees out of phase as the other Or if you really like doing things the most complicated way possible turn blue Skew one mark to the right of center turn red Cycle off wait for red envelope to finish wait for the blue Half R LED to go off and immediately patch blue Half R into red QNT The two channels will be 90 degrees out of phase Bonus points if you can figure out why hint Skew just right of center means Half Rise goes high just before 25 s of the entire envelope has passed 2 Now adjust the levels e Turn both Scale knobs to about 10 00 inverting and both Bi polar buttons on Run the main ENV outputs into a Level Shifter e b Bubblesound LvL rm or Doepfer A 129 3 to add about 2 5V so that the inverted signals are at the same DC offset as the 5V ENV outputs Your four phase shifted outputs will be Blue 5V ENV 0 Red 5V ENV 90 Blue level shifted ENV 180 Red level shifted ENV 270 If you use this patch often and want to avoid using an external level shifter module you can adjust the Bi Pol
28. tap a tempo with the Ping Div Mult knob set to x4 the Ping light will flash four times as fast as you tapped o Three taps will average Two taps set the ping timing period If you give a third tap it will be averaged with the first two taps unless the timing period set by the third tap is widely different than the first two taps specifically it must be more than half and less than twice the timing period set by the first two taps o When a gate is received on the Ping jack the tap tempo clock is disabled Try tapping a fast tempo while you have a slow clock going into the Ping jack the fast tempo will take effect immediately but will revert back to the slow tempo when a gate is received o Hold the Ping button down for 2 seconds to clear the tempo The light will go off and the envelope will stop You also can clear an externally generated ping if the external unit has stopped sending pulses If you hold it down for too long all the lights will flash rapidly and you ll enter System Mode Don t worry just release and hold Ping down again for 2 3 seconds and it will go back to normal mode External Clock plug a clock or manual trigger module into the Ping jack o Only the timing between the last two pulses is used to set the ping clock timing no averaging Therefore you can plug in a manual trigger gate module and just tap in two pulses the ping clock will continue to run at that tempo even though you re not providing any more trigge
29. th of EOF and EOR in gate mode Turning Skew to the right more CV creates longer EOR gates and shorter EOF gates To the left we get shorter EOR gates and longer EOF gates o The width of the Half R gate is always 50 of the envelope time Changing the Skew will change the phase of the Half R output but not the width See Figure 12b Figure 10a End of Rise EOR Gate Figure 11a End of Fall EOF Gate aka Is Falling aka Is Rising or Resting HR goes high 1 2 through time of Rise regardless of curve skew shape Figure 10b EOR Trigger output Figure 11b EOF Trigger output Width of trigger is 4ms Width of trigger is 4ms Figure 12b Phase shifting Half R Blue trace is EOF Red is Half R Skew knob being turned slowly Notice the phase shift from 180 to almost 0 degrees relative to the rising edges Tap Tempo Clock Output By using System Edit Mode you can re assign the EOF jack to output the tap tempo clock see System Edit Mode section for the procedure With this enabled the EOF jack will always output a free running clock that you can set by tapping in a tempo The jack will always output a steady TTC Tap Tempo Clock no matter if the envelope is running or not and regardless of the skew div mult or curve settings In System Mode you can select gate or trigger output This is useful for using the PEG as a master clock source You can use the Ping button and the EOF jack which is really TTC as a separate
30. tracking Page 12
31. uts Top trace is OR jack one channel is being sped up Bottom trace is from mixing both channels using a passive mult Gate Outputs EOR EOF Half Rise Each channel has two gate outputs End of Fall EOF and either End of Rise EOR or Half Rise System Edit Mode can be used to change the functionality of these jacks as well as select whether each jack outputs gates or triggers End of Rise outputs a gate that goes high when the fall segment begins and goes low when the envelope completes It is low during a sustain segment The jack will stay low when the envelope is not running Another name for this jack might be Envelope is Falling System Mode selects whether it outputs gates or triggers See Figures 10a and 10b End of Fall outputs a gate that goes high when the fall segment ends and goes low when a rise segment ends It is low during a sustain segment It will stay high when the envelope is not running Another name for this jack might be Envelope is Rising or Resting System Mode selects whether it outputs gates or triggers See Figures 11a and 11b Half Rise outputs a gate that goes high when 50 of the envelope s rise time has elapsed It goes low when 50 of the fall time has elapsed It is high during a sustain segment and stays low when the envelope is not running System Mode selects whether it outputs gates or triggers See Figure 12a Page 7 e Skew has a big effect on the EOR EOF HR jacks o Skew changes the pulse wid
32. vided multiplied ping clock Holding a gate high on this jack causes the envelope to repeat e Async jack for each channel causes an envelope to output immediately asynchronously Holding a gate high results in an AR envelope rise sustain fall A trigger on Async jack enters Async mode where the envelope is no longer phase locked to the ping clock A trigger on QNT exits Async mode and enters Sync mode e CV input jacks e CV control of each channel s Ping Div Mult Skew and Curve using the CV jacks e Respective knobs set the center offset for the applied CV e CV of 0 10V will modulate the parameter s full range however a 0 5V CV will modulate the parameter within a useful range e System Mode e Special mode to change advanced parameters e Re assign the Half Rise jack to EOR and vice versa e Re assign the EOF jack to Tap Tempo Clock output e Select Gate or Trigger output from EOR EOF Half R jacks e Require a continuous external ping clock unit will not free run if external ping clock stops e Enable disable skew limiting that keeps fastest rise fall times at 6ms Dimensions e 20 HP Eurorack format module e 1 6 40mm deep Power consumption 12V rail 60mA max with 5V Source jumper selecting external 5V 105mA max with 5V Source jumper selecting internal 5V 5V rail 40mA max with 5V Source jumper selecting external 5V not used with 5V Source jumper selecting internal 5V 12V rail 35mA max Page 2 Your first
33. will output the Tap Tempo Clock TTC Gates See section on Tap Tempo Clock Output BRIGHT BLINK jack will output Tap Tempo Clock TTC triggers o ENV Selects Skew limiting OFF No skew limiting fastest rise time 10us fastest fall 200us factory setting ON Skew limiting enabled fastest rise or fall time 10ms See Skew section in manual o PING Selects Free Running external ping clock OFF Ping clock keeps running regardless of whether the external clock has stopped factory setting ON Ping clock will stop if the external clock stops If Tap Tempo Clock is also enabled gate or trigger then the PEG will automatically start using the Tap Tempo Clock o EOF EOR both lights on Select A S R or A R mode for Async jack OFF ASR mode Attack Sustain Release Holding a gate high on the Async jack will cause the envelope to hold sustain until the gate is released ON AR mode Attack Release A gate on the Async jack will be ignored and the envelope will attack and immediate release no sustain hold The is identical to converting a gate to a trigger before running it into the Async jack e When you are satisfied with your new settings press and hold PING for two seconds All the lights will flash a few times again Now you are back to normal operation e System Mode settings are saved in EEPROM memory so they will be remembered after powering down Why would I want to change my system settings e Triggers vs Gates Many modul
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