Maths multiplies two control signals by patching both to a channel with RISE full CW and FALL full CCW

Analog CV multiplication on Maths: apply the control signal to be multiplied to CH.1 or 4 Signal IN, with RISE at full CW and FALL at full CCW. Apply the multiplier control signal to the same channel’s BOTH CV IN. Take output from the channel’s Signal OUT. The result is the product of the two signals — when the multiplier signal is high, the modulated signal passes at full amplitude; when the multiplier is low or zero, the output is suppressed. This creates voltage-controlled amplitude scaling (essentially a simple VCA) for positive control voltages.

Examples

LFO (to be multiplied) → CH.1 Signal IN. Envelope (multiplier) → CH.1 BOTH CV IN. CH.1: RISE full CW, FALL full CCW. CH.1 Signal OUT → filter cutoff. Result: LFO modulation that scales with envelope amplitude.

Assessment

What RISE/FALL settings are required for Maths CV multiplication, and what happens to the output when the multiplier signal goes to zero?