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Beyond Mere Envelopes... Advanced PEG Patching

Hopefully after reading this 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.

Complex pattern generator

Use the PEG's quantization features to create complicated repeating beat patterns. For this patch, it's helpful to 
have a "metronome" or "kick" in the background being triggered 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 goovy, 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. 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.

"Ratcheted" quantized beats 

Control the repeat rate of each note of 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 0V output, and step 8 to 5V. 

If you want to control the number of times the note repeats (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->SCM In and SCM x1 -> PEG QNT, playing with SCM's PW knob)

Self-oscillation (self-patched)

Very chaotic interesting noises. Needs a human to fine-tune the settings. Spend 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.

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 
Div/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.

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!

Page 10

Содержание PEG

Страница 1: ...rator whose envelope lengths are set by incoming clocks 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 UPDATED MANUAL AT http 4mspedals com peg php ...

Страница 2: ...goes high when envelope finishes a fall portion and goes low when envelope begins a fall portion Half R Half Rise gate goes 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 Jumper for each channel changes EOR output to a Half Rise gate output Factory setting is EOR for red channel...

Страница 3: ...s a clock output from an RCD SCM Step 4 Adjust your output level Adjust the Scale knob and or play with the Bi polar button to get a good voltage range that works well with whatever you re modulating with the PEG 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 Turn the Ping Div Mult knob to var...

Страница 4: ... clear an externally generated ping if the external unit has stopped sending pulses 2 External Clock plug a clock or manual trigger module into the Ping jack 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 such as the Pressure Points and just tap in two pulses the ping clock will continue to run at...

Страница 5: ...k will force an update of the div mult amount immediately in the middle of a curve if necessary If you hold a gate high on the QNT jack the div mult amount will track the CV glitchy envelope shapes can be obtained this way See Figure 1B When the Div Mult amount changes the PEG has to compensate the envelope in order to maintain timing A partial envelope may be generated after the div mult amount c...

Страница 6: ...n start the fall curve once the gate is released A S R envelope See Figure 5 4 T jack Cycle Toggle When a gate is appled to this jack both channel s Cycle buttons will toggle state on off and off 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...

Страница 7: ...inear rise linear fall or asymmetrical e g exp rise 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 As you turn the knob clockwise the first 4 curves are asymmetrical with exponential attacks and varying decays The last 4 curves are asymmetrical with logarithmic attacks and varying decays The middle 9 curv...

Страница 8: ...pot 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 This is useful because now the 5V ENV jack and main ENV jacks will produce inverted copies of the same waveshape but in the same voltage range The main output is the ENV output and its amplitude is controlled by the Scale knob and ...

Страница 9: ... 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 While the Curve and Scale parameters have no effect on the gate outputs Skew has a big effect Skew changes the pulse width of EOF and EOR Turning Skew to the right more CV creates longer EOR pulses and shorter EOF pulses To the left we get shorter EOR and...

Страница 10: ...steps 1 7 to 0V output and step 8 to 5V If you want to control the number of times the note repeats 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 SCM In and SCM x1 PEG QNT playing with SCM s PW knob Self oscillation self patched Very chaotic interestin...

Страница 11: ...y way Clock both channels with the same clock 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 change the amount of phase shift from 0 180 50 skew will be 90 Note If you set red Skew to more than 50 this technique will result in a trapezoidal waveform which may not be desired To overcome this turn the red chan...

Страница 12: ...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 12 ...

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