User Manual

SUBTRACTOR SYNTHESIZER
(RECORD+REASON)
545
If you wanted to emulate the volume envelope of an organ, you theoretically only really need to use the Sustain pa-
rameter set to full level, as a basic organ volume envelope instantly goes to the maximum level (Attack “0”) and stays
there (Decay “0”), until the key is released and the sound instantly stops (Release “0”).
But often a combination of Decay and Sustain is used to generate envelopes that rise up to the maximum value, then
gradually decreases to finally land to rest on a level somewhere in-between zero and maximum. Note that Sustain
represents a
leve l, whereas the other envelope parameters represent times.
Release
Finally, we have the Release parameter. This works just like the Decay parameter, except it determines the time it
takes for the value to fall back to zero
after releasing the key.
Amplitude Envelope
The Amplitude Envelope is used to adjust how the volume of the sound should change from the time you press a key
until the key is released. By setting up a volume envelope you sculpt the sound’s basic shape with the four Amplitude
Envelope parameters, Attack, Decay, Sustain and Release. This determines the basic character of the sound (soft,
long, short etc.).
Filter Envelope
The Filter Envelope affects the Filter 1 Frequency parameter. By setting up a filter envelope you control the how the
filter frequency should change over time with the four Filter Envelope parameters, Attack, Decay, Sustain and Re-
lease.
Filter Envelope Amount
This parameter determines to what degree the filter will be affected by the Filter Envelope. Raising this knob’s value
creates more drastic results. The Envelope Amount parameter and the set Filter Frequency are related. If the Filter
Freq slider is set to around the middle, this means that the moment you press a key the filter is already halfway open.
The set Filter Envelope will then open the filter further from this point. The Filter Envelope Amount setting affects
how much further the filter will open.