Waldorf Wave 3.v - Manual (Page 71)

Appendix
71 PPG Wave 3.V User´s Manual
To give you an idea of the extent of damping, consider
this example of a low pass filter: A reduction of 24dB
reduces the original level one octave above the cutoff
point by approx. 94%. The damping factor two octaves
above the cutoff point reduces the original level by more
than 99%, which in most cases means this portion of the
signal is no longer audible.
The PPG Wave 3.V’s filter also features an emphasis
parameter (also known as resonance parameter). Emphasis
in the context of a low pass filter means that a narrow
frequency band around the cutoff point is emphasized.
The following picture shows the effect of the resonance
parameter on the filter’s frequency curve:
If emphasis is raised to a great extent, then the filter will
begin self-oscillation, i.e. the filter generates an audible
sine wave even when it does not receive an incoming
signal.
The Envelope
Most traditional synthesizers feature ADSR envelopes.
These envelopes are made up of four parameters that
determine their response: Attack, Decay, Sustain and
Release. The other
parameters of the Envelope section
have no function, so they can not be edited. The
following picture illustrates the structure of an ADSR
envelope:
Frequency
Level
Cutoff
Frequency
Level
Cutoff
Resonance