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class:: PV_MagBelow
summary:: Pass bins below a threshold.
related:: Classes/FFT, Classes/IFFT, Classes/PV_MagAbove, Classes/PV_LocalMax, Classes/PV_MagClip
categories:: UGens>FFT
Description::
Passes only bins whose magnitude is below a threshold.
classmethods::
method::new
argument::buffer
FFT buffer.
argument::threshold
Magnitude threshold.
Examples::
code::
s.boot;
(
b = Buffer.alloc(s,2048,1);
c = Buffer.read(s, Platform.resourceDir +/+ "sounds/a11wlk01.wav");
)
(
SynthDef("help-magBelow", { arg out=0, bufnum=0;
var in, chain;
in = SinOsc.ar(SinOsc.kr(SinOsc.kr(0.08, 0, 6, 6.2).squared, 0, 100, 800));
chain = FFT(bufnum, in);
chain = PV_MagBelow(chain, 10);
Out.ar(out, 0.5 * IFFT(chain).dup);
}).play(s,[\out, 0, \bufnum, b.bufnum]);
)
(
SynthDef("help-magBelow2", { arg out=0, bufnum=0;
var in, chain;
in = WhiteNoise.ar(0.2);
chain = FFT(bufnum, in);
chain = PV_MagBelow(chain, MouseX.kr(0, 7));
Out.ar(out, 0.5 * IFFT(chain).dup);
}).play(s,[\out, 0, \bufnum, b.bufnum]);
)
(
SynthDef("help-magBelow3", { arg out=0, bufnum=0, soundBufnum=2;
var in, chain;
in = PlayBuf.ar(1, soundBufnum, BufRateScale.kr(soundBufnum), loop: 1);
chain = FFT(bufnum, in);
chain = PV_MagBelow(chain, MouseX.kr(0, 310));
Out.ar(out, 0.5 * IFFT(chain).dup);
}).play(s,[\out, 0, \bufnum, b.bufnum, \soundBufnum, c.bufnum]);
)
::
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