The DSP Toolchest
442
• Channels: 1
Description:
SVF Control is a monophonic process block that simultaneously applies multiple filters (high pass,
low pass, band pass and notch) to the input signal. Each filter is available on a different output
of the process block.
The filter parameters are fully interpolated, so you can modify them without causing any glitches
in the audio being processed. In addition, the SVF Control provides a
Glide
control parameter
that allows you to control the interpolation rate. This allows you to configure the filter so that it
reacts instantly to parameter changes, or has a slower gliding behavior.
The
F
parameter allows you to set the center/cutoff frequency of the various filters. The
Q
parameter
allows you to control the resonance at the cutoff frequency. Larger Q's will increase the peaking
at the cutoff frequency.
Parameters:
F
[0, 5.5k] Hz
Sets the center frequency/corner frequency of the filter.
Q
[0.5, 1k]
Sets the quality factor of the filter, and controls the resonance at the cutoff frequency.
Glide
[1m, 1]
Sets the glide rate of changes to the other parameters. When the Glide is set to 0, the filter will
not change in response to parameter changes. When the glide is set to 1, the filter will change
instantaneously. In between values cause the filter to interpolate changes in the parameters
at a faster or slower rate.
Gain
[-100, 27] dB
Sets the output gain of the filter.
NC SVF
• Synopsis: Numerically Controlled State Variable Filter
• Category: EQ, Synth Effect, Building Blocks
• Channels: 1
Description:
NC SVF is a monophonic process block that simultaneously applies multiple filters (high pass, low
pass, band pass and notch) to the input signal. Each filter is available on a different output of the
process block.
The filter parameters are driven by the 2 control inputs (Cutoff and Resonance) and are fully inter-
polated, so you can modify them at audio rates without causing any glitches in the audio being
processed.
The Cutoff input allows you to set the center/cutoff frequency of the various filters. The Resonance
input allows you to control the resonance at the cutoff frequency. The Resonance control signal
