Wherein we present a TwoZero filter for removing unsoundly frequencies.
Right-click to copy examples to your workspace
A two-zero digital filter can act as a bandreject or notch, filter that attenuates frequencies near its zero. For more details, see Smith/CCRMA.
NotchFreq
is the resonant frequency meaasured in Hz.
Radius
is a measure of the filter quality and usually be in the range .5-1.
Because this filter removes signal energy, it will generally be quieter.
Always monitor your gains accordingly.
Gain
multiplies the incoming signal prior to filtering.
op
allows you to bypass the filter by selecting passthrough
.
Here we control NoiseCtrl
with AbcSequencer
to produce controlled bursts of white noise. That signal is routed into TwoZero
whose Radius
is automated by a Sine wave between .5 and 1. Inside
Channel
you'll also find an NRev reverberator.