Peter McCulloch

PM.Chamberlin~ is a Chamberlin state-variable filter.  It contains two extra modes (peak and notch), and is over-sampled so it supports cutoff frequencies over up to roughly 80% of the Nyquist frequency.

The cutoff can be specified in MIDI or frequency values, and the filter can self-oscillate.  The filter has a built-in saturation.  The volume of the self-oscillation is fixed, so pre-and-post gain can be used to adjust the mix of the resonant peak.

This release is only for Mac, and the SDK was for 10.5, so it may not work on 10.4 machines.  I don't have Windows, but if anyone is interested in using this on Windows please contact me and we'll see what we can do.


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