86 lines
1.7 KiB
Text
86 lines
1.7 KiB
Text
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]);
|
|
)
|
|
|
|
::
|
|
|