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class:: PV_BinShift
summary:: Shift and stretch bin position.
related:: Classes/FFT, Classes/IFFT, Classes/PV_MagShift
categories:: UGens>FFT
Description::
Shift and scale the positions of the bins. Can be used as a very crude
frequency shifter/scaler.
classmethods::
method::new
argument::buffer
FFT buffer.
argument::stretch
Scale bin location by factor.
argument::shift
Add an offset to bin position.
argument::interp
Set to 0 (default) for no interpolation, or 1 to linear-interpolate between bins.
Examples::
code::
s.boot;
(
c = Buffer.read(s, Platform.resourceDir +/+ "sounds/a11wlk01.wav");
)
(
SynthDef("help-binStretch", { arg out=0;
var in, chain;
in = LFSaw.ar(200, 0, 0.2);
chain = FFT(LocalBuf(2048), in);
chain = PV_BinShift(chain, MouseX.kr(0.25, 4, \exponential) );
Out.ar(out, 0.5 * IFFT(chain).dup);
}).play;
)
(
SynthDef("help-binStretch2", { 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_BinShift(chain, MouseX.kr(0.25, 4, \exponential) );
Out.ar(out, 0.5 * IFFT(chain).dup);
}).play(s,[\out, 0, \soundBufnum, c.bufnum]);
)
(
SynthDef("help-binShift", { arg out=0, bufnum=0;
var in, chain;
in = LFSaw.ar(200, 0, 0.2);
chain = FFT(LocalBuf(2048), in);
chain = PV_BinShift(chain, 1, MouseX.kr(-128, 128) );
Out.ar(out, 0.5 * IFFT(chain).dup);
}).play;
)
(
SynthDef("help-binShift2", { 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_BinShift(chain, 1, MouseX.kr(-128, 128) );
Out.ar(out, 0.5 * IFFT(chain).dup);
}).play(s,[\out, 0, \soundBufnum, c.bufnum]);
)
::
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