Waldorf Wave 3.v User Manual download pdf (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:

!"#$%#&'(

)#*#+

,%-.//

!"#$%#&'(

)#*#+

,%-.//

0#1.&2&'#

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 81 82

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Waldorf Wave 3.v User Manual Page 71