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Table Of Contents
Chapter 24 Sculpture 377
Filter Parameters
These parameters offer further timbral/spectral control over your sound. They should
be pretty familiar to you if you have any experience with synthesizers.
On/Off
The Filter button activates/deactivates the filter.
Filter Type Buttons
The five buttons at the bottom of the filter section determine the filter mode. Choices
are:
Hipass—Allows frequencies above the Cutoff Frequency to “pass”. As frequencies
below the Cutoff Frequency are suppressed, its also known as a Low Cut Filter. The
slope of the filter is 12 dB/octave in Highpass mode.
Lowpass—Allows frequencies which fall below the Cutoff Frequency to “pass”. As
frequencies above the Cutoff Frequency are suppressed, it’s also known as a High Cut
Filter. The slope of the filter is 12 dB/octave in Lowpass mode.
Peak—This mode allows for an increase in level of a frequency band, the width of
which is controlled by the Resonance parameter.
Bandpass—In this mode, only the frequency band directly surrounding the Cutoff
Frequency can pass. All other frequencies are cut. The Resonance parameter controls
the width of the frequency band that can pass. The band pass filter is a two-pole
filter with a slope of 6 dB/octave on each side of the band.
Notch—In this mode, the frequency band directly surrounding the Cutoff Frequency
is cut. All other frequencies are allowed to pass. The Resonance parameter controls
the width of the frequency band that is cut.
Cutoff (morphable)
Determines the filter cutoff frequency. As an example of its use: In a low pass filter, all
frequency portions above the Cutoff Frequency are suppressed, or cut off, hence the
name. The Cutoff Frequency controls the brilliance of the signal. The higher the Cutoff
Frequency is set, the higher the frequencies of signals that are allowed to “pass
through the low pass filter.