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4ms Pingable Envelope Generator
Eurorack Module User Manual v2011-11-25
The Pingable Envelope Generator (PEG) from 4ms is a dual envelope generator 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.
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Summary of Contents for 4ms PEG
- Page 1 Eurorack Module User Manual v2011-11-25 The Pingable Envelope Generator (PEG) from 4ms is a dual envelope generator 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.
- Page 2 Features Basics: • Dual “pingable” envelope generator – total envelope time is set by a minimum of two pulses • ("ping") Tap tempo button or external clock/triggers sets the ping time • Two taps will set the tempo. If a third tap is given close to the tempo to the first two taps, the two •...
- Page 3 PEG. 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. Tap the red channel Ping button two or three times, about a second between taps. It's easier to see •...
- Page 4 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. Tap tempo button — tap the white "Ping" button at least twice to set the timing.
- Page 5 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 •...
- Page 6 Pressing this button after an Async pulse will make the envelope re-sync.) As soon as the button is pressed, the PEG calculates where in its cycle the envelope should be so that it ends on the next ping clock, and starts outputting the envelope from this point. See Figure 3.
- Page 7 Skew Skew is the ratio between the rise and fall times. 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.
- Page 8 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.
- Page 9 Gate Outputs (EOR/EOF/Half-Rise) Each channel has a two gate outputs: End-of-Fall (EOF), and either End-of-Rise (EOR) or Half-Rise. A jumper selects the latter (see photos below for location of jumpers). End-of-Rise outputs a gate that goes high when the fall segment begins, and goes low when the •...
- Page 10 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.
- Page 11 Phase Shifting Variable phase shift – two sets of events are repeatedly occurring at the same intervals, but the amount of stagger between them is variable. Ping both sides with the same clock. Cycle on (both channels). Main envelope outputs to open two different filters or LPG's or somehow make sound.
- Page 12 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 12...