MoogFF Moog VCF implementation, designed by Federico Fontana

MoogFF.ar(in, freq, gain, reset)

A digital implementation of the Moog VCF (filter).

in - the input signal

freq - the cutoff frequency

gain - the filter resonance gain, between zero and 4

reset - when greater than zero, this will reset the state of the digital filters at the beginning of a computational block.

The design of this filter is described in the conference paper Fontana, F. (2007) Preserving the Digital Structure of the Moog VCF. In Proc. ICMC07, Copenhagen, 25-31 August 2007

Examples

s.boot;

// Play it with the mouse...

x = { MoogFF.ar(WhiteNoise.ar(01.1), MouseY.kr(100, 10000, 1), MouseX.kr(0, 4)) }.play(s);

x.free;

// Mmmm, throbby

x = { MoogFF.ar(Pulse.ar([40,121],[0.3,0.7]),SinOsc.kr(LFNoise0.kr(0.42).range(0.001,2.2)).range(30,4200), 0.83 * 4)}.play(s);

x.free;

Original Java code Copyright F. Fontana - August 2007 - federico.fontana@univr.it

Ported to C++ for SuperCollider by Dan Stowell