// remap magnitudes to a new mag curve

// a curve of Env([0, 1], [1]) will output the input

// a curve of Env([1, 0], [1]) will output the inverse magnitudes (loud partials are quiet, quiet

// partials are loud... and so on.  The Env times don't have to equal 1 (they are scaled internally

// to 1 no matter what)

{PinkNoise.ar(0.03) + SinOsc.ar(440, 0, 0.5)}.play(s)

SynthDef(\magmap, {arg fftbuf, envbuf;

var in, chain, out;

in = PinkNoise.ar(0.03) + SinOsc.ar(440, 0, 0.5);

chain = FFT(fftbuf, in);

chain = PV_MagMap(chain, envbuf);

out = IFFT(chain);

Out.ar(1, out);

}).load(s);

s.boot;

// the fft buf

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

// the curve to map the sound onto

a = Env([0, 1, 0], [0.05, 0.95], \welch).plot;

// send the signal to a buffer

s.sendBundle(0.1, [\b_alloc, 1, 256, 1, [\b_setn, 1, 0, 256] ++ a.asSignal(256)])

// start the synth

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

// free it

s.sendMsg(\n_free, z);

a = Env([1, 0], [1]).plot;

// send the signal to a buffer

s.sendBundle(0.1, [\b_alloc, 1, 256, 1, [\b_setn, 1, 0, 256] ++ a.asSignal(256)])

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

// free it

s.sendMsg(\n_free, z);

SynthDef(\magmap, {arg fftbuf, envbuf, sndbuf;

var in, chain, out;

in = PlayBuf.ar(1, sndbuf, BufRateScale.kr(sndbuf), loop: 1);

chain = FFT(fftbuf, in);

chain = PV_MagMap(chain, envbuf);

out = IFFT(chain);

Out.ar(1, out);

}).load(s);

s.boot;

// the fft buf

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

// the curve to map the sound onto

a = Env([0, 1], [1], \lin); // get original back

//a = Env([1, 0], [1], \lin); // noise partials are loudest

//a = Env([0.1, 1, 0.1], [0.5, 0.5], \exp); // shape the sound!

//a = Env([0.1, 1, 0.1], [0.8, 0.2], [\exp, \sin]);

// send the signal to a buffer

s.sendBundle(0.1, [\b_alloc, 1, 256, 1, [\b_setn, 1, 0, 256] ++ a.asSignal(256)],

[\b_allocRead, 2, "/Users/joshp/SND/vln-g4.aiff"])

// start the synth

s.sendMsg(\s_new, \magmap, z = s.nextNodeID, 0, 1, \fftbuf, 0, \envbuf, 1, \sndbuf, 2);

s.sendMsg(\n_free, z);

s.quit