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The signal from all 10 synthesis filters are mixed together and sent to a Voltage-Controlled Amplifier
(VCA) which is controlled by a decay-only envelope generator (EG). The result is finally sent to the
output of Spectravox. The envelope generator may be triggered by the TRIGGER button, the TRIGGER
CV input, or from the program signal via the PROG TRIG -> EG switch.
DECAY
This sets the decay time for the envelope generator used to control the VCA.
The envelope generator produces a percussive envelope with no attack time
and variable decay from around 1 milliseconds to greater than 5 seconds.
VOLUME
This sets the level of the signal at the AUDIO OUT / and VCA outputs.
VCA MODE
This sets whether the VCA is controlled by the envelope generator (EG) or
whether the VCA is always fully open (ON).
NOTE: When EG mode is selected, the VCA CV input on the patch bay acts as an
amplitude control for the envelope—essentially a velocity input!
TRIGGER
Pressing TRIGGER will trigger a new envelope in the envelope generator.
DECAY
VOLUME
VCA & ENVELOPE GENERATORS (EG)
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