PV_NoiseSynthF return only bins that are unstable

PV_PartialSynthF return only bins that are stable

PV_NoiseSynthF and PV_PartialSynthF base these decisions on whether or not freq data across numFrames is within a given threshold

PV_NoiseSynthF(buffer, threshold, numFrames, initflag)

PV_PartialSynthF(buffer, threshold, numFrames, initflag)

buffer - the FFT buffer

threshold - a phase value (in radians) with which to allow values to pass through or be zeroed out

numFrames - the number of FFT frames needed to make the above decision

initflag - if 0, all bins are zeroed out while the initial is calculated, if 1, all bins pass through.

Examples:

{SinOsc.ar(440, 0, 0.5) + PinkNoise.ar(0.4)}.play; // a sample sig

SynthDef(\partialsynth, {arg fftbuf;

var in, chain, out;

in = SinOsc.ar(440, 0, 0.5) + PinkNoise.ar(0.4);

chain = FFT(fftbuf, in);

// resynhtesize according to MouseX. If 0, only sound with VERY stable changes of frequecy

// will be returned. Upper limit should be Nyqust / nBins , e.g. 22050 / 2048 -> 21.532

// or + and - 21.532

chain = PV_PartialSynthF(chain, MouseX.kr(0, 21.532), 6, 0);

out = IFFT(chain);

Out.ar(0, out.dup);

}).load(s);

s.boot;

// the fft buf

s.sendMsg(\b_alloc, 0, 2048);

// start the synth

s.sendMsg(\s_new, \partialsynth, z = s.nextNodeID, 0, 1, \fftbuf, 0);

// free it

s.sendMsg(\n_free, z);

s.sendMsg(\b_free, 0);

SynthDef(\noisesynth, {arg fftbuf;