The MM-978 Quad Function Generator features 4 AD-style envelopes with control over attack and decay length from 1ms up to 10 seconds. These envelopes can also be chained together to create more exciting, complex envelopes to liven up your sounds! These can be looped or sustained to give you LFOs, or sustained envelopes for maximum flexibility.

Instructions

Inputs

Input - Signal In - this can be a trigger or gate. The ATTACK phase is triggered by the rising edge of a HIGH signal.

Mode - 3 Modes of operation. From top to button on the 3-way switch:

1. Single - Once the ATTACK phase has ended, it will transition straight to the DECAY phase - regardless of a Gate signal.
2. Sust - If a GATE signal is passed to the input, once the ATTACK phase has ended, the output signal will stay high until the GATE signal goes LOW. This will then trigger the DECAY phase.
3. Cycle - once the DECAY phase has ended, the EOD will trigger and the function will restart with the ATTACK phase.

Attack - Knob will control the ATTACK length of the signal, from 1ms up to 10 seconds. A CV signal connected to the ATTACK CV Input will modulate the ATTACK length dependent on the signal.

Decay - Knob will control the DECAY length of the signal, from 1ms up to 10 seconds. A CV signal connected to the DECAY CV Input will modulate the DECAY length dependent on the signal.

Outputs

EOA Out - Once the ATTACK phase of a function has ended, this will output a short pulse signal. This can we used to chain functions together by connecting this to the INPUT Jack of the next function generator.

EOD Out - Once the DECAY phase of a function has ended, this will output a short pulse signal. This can we used to chain functions together by connecting this to the INPUT Jack of the next function generator.

CV Out - Outputs the function signal.