Waldorf 2-Pole - Manual (Page 32)

Appendix
2-pole Analog Filter User´s Manual 32
2-pole Filter use a full-wave rectification where the nega-
tive half of the waveform is sign inverted.
Release
An envelope parameter. The term "Release" describes the
descent time of an envelope to its minimum value after a
trigger is terminated. The Release phase begins imme-
diately after the trigger is terminated, regardless of the
envelope's current status. For instance, the Release phase
may be initiated during the Attack phase.
Resonance
Resonance is an important filter parameter. It emphasizes
a narrow bandwidth around the filter cutoff frequency by
amplifing these frequencies. This is one of the most po-
pular methods of manipulating sounds. If you substantial-
ly increase the resonance, i.e, to a level where the filter
begins self-oscillation, then it will generate a relatively
clean sine waveform.
Sustain
An envelope parameter. The term "Sustain" describes the
level of an envelope that remains constant after it has run
through the Attack and Decay phases. Sustain lasts until
the trigger is terminated.
Trigger
A trigger is a signal that activates events. Trigger signals
are very diverse. For instance, a MIDI note or an audio
signal can be used as a trigger. The events a trigger can
initiate are also very diverse. A common application for a
trigger is to start an envelope.
Volume
The term describes a sound's output level