The Gate-Mode; The Envelope-Multiplier - Schippmann ebbe und flut User Manual

9.5.2 The gate-mode

In gate-mode, there is no hold-phase and no sudden restart. As soon as the gate signal is activ
(+5 Volts) at the gate input, the attack-phase starts exactly at the current level of the moment, the trig-
ger was received. When the gate signal becomes inactiv (0 Volt), the release-phase is started again. As
shown in fig. 9.5.4, the envelope toggles between attack-and release-phase.
envelope
output
Gate
Fig. 9.5.4 AR-envelope in gate-mode

9.5.3 The envelope-multiplier

Both envelopes contain its own multiplier, basically a slimmed down VCA. It is used to modulate the
final level of the envelope with a control voltage. Fig. 9.5.5 shows how the final level of the envelope is
controlled from the "AMT"-input of the multiplier. The multiplier has two outputs.
1. VCF output (only internally):
5 V
3 V
ENV
1 V
-output
-Voltage
Fig. 9.5.5 envelope modulation with the "AMT"-input of the multiplier
AMT = 5 V / floating
AMT = 3 V
AMT = 1 V
AMT = 0 V
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