Apple MainStage 3 Instruments - MainStage 3 Instruments

Sculpture filter 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 five morph points. For more information, see Sculpture morph overview on
page 280.
The filter 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 filters, see Filters overview on page 483.
Key knob
Filter on/off button
Velo Sens knob
Resonance knob
Cutoff knob
Filter Type buttons
Filter parameters
••
Filter On/Off button: Turns the filter section on or off.
••
Filter type buttons: Click to choose the filter mode.
••
HiPass: Allows frequencies above the cutoff frequency to pass. Because frequencies below
the cutoff frequency are suppressed, it’s also known as a low cut filter. The slope of the filter is
12 dB/octave.
••
LoPass: Allows frequencies that fall below the cutoff frequency to pass. Because 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.
••
Peak: Allows the center of a frequency band to be specified with the Cutoff knob. Bandwidth
and gain are controlled with the Resonance knob. Frequencies outside the band are left at
their current level. Peak filters 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 filter
is a two-pole filter 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 filters are generally used
to suppress noise or a particular frequency.
••
Cutoff knob (morphable): Rotate to set the cutoff or center frequency, depending on the chosen
filter type. In a lowpass 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 lowpass filter.
Chapter 13 Sculpture 257