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