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Cycle 

The 

Cycle

 function makes the envelope self-cycle (LFO mode). When this button is lit, 

the envelope will keep running without needing any external triggers. Pressing the 

Cycle

 button will toggle the cycle state on/off. 

The 

Cycle

 jack toggles the cycling state. By default, when a gate is applied to this jack, 

the 

Cycle

 button will toggle state (on

off and off

on). When the gate is released, 

cycling will revert to its previous state. In System Mode, this jack can be changed to 

toggle the cycling state each time it receives a trigger. So if 

Cycle

 is on, a trigger will 

turn it off, and a subsequent trigger will turn it on again.  

Depending on whether the module is in 

Sync 

or 

Async

 mode, the envelope will start 

playing from a different point (starting phase) when the 

Cycle 

button is pushed. See 

Sync and Async Modes section. 

 

Trigger 

The 

Trigger

 jack initiates an envelope when a trigger is received. By default, the 

envelope starts immediately and the module is put into 

Async

 mode. Holding the trigger 

high will have no effect. In System Mode, this jack can be configured as a Quantized 

jack, so that receiving a trigger will cause an envelope to output on the next ping clock. 

When used this way, the module will be put into 

Sync

 mode when it receives a trigger. 

Holding the 

Trigger

 jack high will cause the envelope to cycle until released. 

The jack can also be configured as an Async Gate jack. This is the same as the default 

behavior (Async Trigger), but the envelope will sustain if the gate is held high past the 

end of the rise phase. When the gate is released, the fall stage will start. 

Async modes allow you to re-trigger an envelope that’s already running, while the 

Quantized mode does not. See Sync and Async Modes section and System Mode 

sections. 

 

Shape    

The 

Shape

 knob and jack control both the skew (or ratio of rise to fall times) and the 

selection of waveshapes (logarithmic, linear, exponential). While there is a continuous 

spectrum of waveshapes, the range can be divided into three zones. 

The first zone is from fully counter-clockwise to around 9:30. Turning the knob 

clockwise, the envelope starts as a ramp-up exponential shape and slowly turns to a 

linear ramp-up shape. 

The transition from the first zone to the second zone goes from a ramp-up linear shape 

to a balanced exponential shape (equal rise and fall times) at about 10:00. 

The second zone begins with the balanced expo shape. It then transitions to a balanced 

linear shape at the knob’s center position, and then to a balanced log shape at about 

2:00. 

The transition to the third zone turns the balanced log shape into a ramp-down linear 

shape at about 2:30 

The third zone mirrors the first zone, going from ramp-down linear to ramp-down 

exponential. 

The CV jack ranges from -5V to +5V and offsets the knob’s position. 

Scale 

The 

Scale

 knob is an attenuverter for the main envelope output, 

ENV OUT

. If the scale 

knob is right of center, the output voltage will increase when the envelope is in the rise 

phase, and decrease when the envelope is falling (non-inverted). This is normally how 

envelopes are used. If the 

Scale

 knob is left of center, the envelope will be inverted and 

the output voltage will decrease as the envelope rises, and increase as it falls. 

As you turn 

Scale

 towards center, the amplitude will decrease, moving the peaks 

towards zero. At center, there will be no output (technically, it produces a steady DC 

voltage which is set by the 

Shift

 feature). 

Offset 

The 

Offset 

knob shifts the envelope on the 

ENV OUT 

jack up and down by adding DC 

offset. The offset is applied 

before

 

Scale 

is applied. For a positive-only envelope, 

Offset 

would typically be set at maximum, and 

Scale 

should be right of center. For a bi-

polar envelope, 

Offset 

should be set to center. For a negative-only envelope (non-

inverted), 

Offset 

should be set to minimum. 

Page   of 

5

12

Cycle

Cycle

Trigger

Shape

Shape CV

Scale

Offset

Summary of Contents for Mini PEG

Page 1: ...nd interpolated curves Cycle button and gate jack for looping envelopes Scale knob acts as attenuating inverter for main envelope output Maximum 9 5V peak to peak Offset knob for setting DC offset ranging from 9 4V to 9 4V End of Fall EOF output jack goes high when envelope finishes a fall portion and low when envelope begins a fall portion Jack can also be configured as End of Rise Half Rise or T...

Page 2: ...ed but incorrectly connecting any module in any system can damage other modules on the power bus Setting up your Mini PEG 2 Overview 3 Beginning Patch 3 Control Details 4 Ping 4 Div Mult 4 Cycle 5 Trigger 5 Shape 5 Scale 5 Offset 5 ENV OUT 6 EOF 6 Maximum and Minimum Clock Times 6 Sync and Async Modes 7 Changing between Sync and Async Mode 7 Cycle Button in Sync and Async mode 7 Modulating Div Mul...

Page 3: ...ite at the tempo you tapped If you give a third tap the time between taps will be averaged You could also run an external clock into the Ping jack when a trigger is received on the Ping jack the internal tap tempo clock is stopped Step 3 Provide a trigger source Like any envelope module the Mini PEG will produce an envelope when it receives a trigger Also like many envelope modules it can be set t...

Page 4: ...n if you don t provide any more trigger pulses Note in System Mode you can disable this free running feature thus giving the Mini PEG two external pulses will output just one envelope and then stop See the System Mode section When a gate is received on the Ping jack the tap tempo clock is disabled Conversely when the Ping button is tapped the external clock will be overridden Try tapping a fast te...

Page 5: ...mes and the selection of waveshapes logarithmic linear exponential While there is a continuous spectrum of waveshapes the range can be divided into three zones The first zone is from fully counter clockwise to around 9 30 Turning the knob clockwise the envelope starts as a ramp up exponential shape and slowly turns to a linear ramp up shape The transition from the first zone to the second zone goe...

Page 6: ...nd of Rise jack a Half Rise jack or a Tap Clock output jack End of Rise EOR goes high when a fall segment starts and stays high if it stops and goes low when a rise segment starts and stays low if it sustains This jack could be called Envelope is Falling or Stopped Half Rise goes high when the rise portion is half way finished stays high through any sustain period and goes low when the fall portio...

Page 7: ...When you turn on the Cycle button in Sync mode the envelope will immediately start outputting from the same phase as the ping clock You can imagine this as if the envelope was always running in sync with the ping clock and the Cycle button un mutes it See Figure 2 This can cause some discontinuities but the envelope will always be in sync with the ping clock When you turn Cycle off the output will...

Page 8: ...so that it starts on the 3 See Figure 8 This can be useful for multi phase outputs e g Quadrature patch Tap Clock Output The EOF jack can be configured to output a tap tempo clock This is done in System Mode see System Mode section When configured as Tap Clock whatever tempo you tap on the Ping jack will be steadily output on the EOF jack Unlike configuring the EOF jack as End of Rise End of Fall ...

Page 9: ...odule When a firmware update is available it will be posted on 4mscompany com as a WAV file or zipped WAV file Updating Firmware 1 Download the audio firmware file and prepare to play it on your computer or mobile device 2 Set your computer or device volume to maximum both in the system OS controls and also in the audio player application 3 Power off the Mini PEG and unpatch all cables 4 Patch the...

Page 10: ...urorack module such as the Listen IO between the computer and the Mini PEG Viewing the Firmware Version On power up the Mini PEG displays its firmware version by flashing two colors on the Ping button The first color turns on immediately after power up then the light turns off for a moment and the second color turns on As of this manual printing the latest and only version number is 1 0 Red then W...

Page 11: ...lse width of the EOF light shows whether the EOF jack outputs gates or triggers When set to gates the EOF light will flash equally on and off When set to triggers the EOF light will flicker briefly on Press the Ping button to toggle 5 Free running Ping The Ping button light will be flashing white or red All other lights will be off The Ping button shows whether the ping clock keeps running after a...

Page 12: ...30mA Envelope Outputs Maximum voltage range ENV OUT 9 4V to 9 4V Maximum amplitude ENV OUT 9 5Vpp Voltage range 5V OUT 0V to 5V Frequency range 0 1dB DC to 1kHz 1 0dB 2 5kHz 2 0dB 4kHz 12 bit 40kHz sample rate Clock Range Period range 29 16 hours to 250µs 4kHz CV Inputs Div Mult and Shape Voltage range 5V to 5V Gate Inputs Ping Trigger Cycle Rising edge threshold 2 5V Page of 12 12 ...

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