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Chapter 13 Sculpture 254
Sculpture lter parameters
The parameters discussed in this section apply on a per-voice basis. A number of parameter
names are followed by (morphable), which indicates that the parameters can be morphed
between as many as ve morph points. For more information, see Sculpture morph overview on
page 278.
The lter parameters provide further timbral/spectral control over your sound. They will be
familiar to you if you have any experience with synthesizers. If you’re new to the concepts behind
synthesizer lters, see Filters overview on page 482.
Key knob
Filter Type buttons
Filter on/off button
Velo Sens knob
Resonance knob
Cutoff knob
Filter parameters
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Filter On/O button: Turns the lter section on or o.
•
Filter type buttons: Click to choose the lter mode.
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HiPass: Allows frequencies above the cuto frequency to pass. Because frequencies below
the cuto frequency are suppressed, it’s also known as a low cut lter. The slope of the lter is
12 dB/octave.
•
LoPass: Allows frequencies that fall below the cuto frequency to pass. Because frequencies
above the cuto frequency are suppressed, it’s also known as a high cut lter. The slope of
the lter is 12 dB/octave.
•
Peak: Allows the center of a frequency band to be specied with the Cuto knob. Bandwidth
and gain are controlled with the Resonance knob. Frequencies outside the band are left at
their current level. Peak lters are generally used to enhance a frequency range.
•
BandPass: The frequency band surrounding the center frequency is allowed to pass.
Resonance controls the width of this band. All other frequencies are cut. The bandpass lter
is a two-pole lter with a slope of 6 dB/octave on each side of the band.
•
Notch: The frequency band surrounding the center frequency is cut. Resonance controls the
width of this band. All other frequencies are allowed to pass. Notch lters are generally used
to suppress noise or a particular frequency.
•
Cuto knob (morphable): Rotate to set the cuto or center frequency, depending on the chosen
lter type. In a lowpass lter, all frequency portions above the cuto frequency are suppressed,
or cut o, hence the name. The cuto frequency controls the brilliance of the signal. The higher
the cuto frequency is set, the higher the frequencies of signals that are allowed to pass
through the lowpass lter.