PV_MagAbove pass bins above a threshold

PV_MagAbove(buffer, threshold)

Passes only bins whose magnitude is above a threshold.

buffer - fft buffer.

threshold - magnitude threshold.

See also FFT Overview.

s.boot;

(

SynthDef("help-magAbove", { arg out=0;

var in, chain;

in = SinOsc.ar(SinOsc.kr(SinOsc.kr(0.08, 0, 6, 6.2).squared, 0, 100, 800));

//in = WhiteNoise.ar(0.2);

chain = FFT(LocalBuf(2048), in);

chain = PV_MagAbove(chain, 310); 

Out.ar(out, 0.5 * IFFT(chain).dup);

}).play;

)

(

SynthDef("help-magAbove2", { arg out=0;

var in, chain;

in = WhiteNoise.ar(0.2);

chain = FFT(LocalBuf(2048), in);

chain = PV_MagAbove(chain, MouseX.kr(0, 10)); 

Out.ar(out, 0.5 * IFFT(chain).dup);

}).play;

)

c = Buffer.read(s,"sounds/a11wlk01.wav");

(

SynthDef("help-magAbove3", { arg out=0, soundBufnum=2;

var in, chain;

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

chain = FFT(LocalBuf(2048), in);

chain = PV_MagAbove(chain, MouseX.kr(0, 310)); 

Out.ar(out, 0.5 * IFFT(chain).dup);

}).play(s,[\out, 0, \soundBufnum, c]);

)

c.free;