lcoogan
/
flucoma-sc
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

removed the MS example from bufcompose help and put it in the example folder

Browse Source
nix
Pierre Alexandre Tremblay 6 years ago
parent 6ef4bcad31
commit ca34201054
2 changed files with 70 additions and 71 deletions
Show Stats Download Patch File Download Diff File

72
release-packaging/HelpSource/Classes/FluidBufCompose.schelp
Unescape Escape View File

@ -94,74 +94,4 @@ FluidBufCompose.process(s, source: b, numFrames: 44100, numChans: 1, destStartCh
FluidBufCompose.process(s, source: c, numFrames:44100, numChans:1, destination: d, destGain: 1.0);
d.query;
d.play;
::
STRONG::A more complex example: using composition as an Mid-Side filtering process::
CODE::
// load a stereo buffer and initialise the many destinations
(
b = Buffer.read(s,File.realpath(FluidBufCompose.class.filenameSymbol).dirname.withTrailingSlash ++ "../AudioFiles/Tremblay-SA-UprightPianoPedalWide.wav");
c = Buffer.new(s);
d = Buffer.new(s);
e = Buffer.new(s);
f = Buffer.new(s);
)
// encode the mid (in c) and the side (in d)
(
FluidBufCompose.process(s,b, numChans: 1, gain: -3.0.dbamp, destination: c);
FluidBufCompose.process(s,b, numChans: 1, gain: -3.0.dbamp, destination: d);
FluidBufCompose.process(s,b, numChans: 1, gain: -3.0.dbamp, startChan: 1, destination: c, destGain: 1.0);
FluidBufCompose.process(s,b, numChans: 1, gain: -3.0.dbamp * -1.0, startChan: 1, destination: d, destGain: 1.0);
)
// (optional) compare auraly the stereo with the MS
b.play;
{PlayBuf.ar(1,[c,d])}.play;
// The geeky bit: copy the side (buffer d) on itself with specific amplitudes and delays, in effect applying a FIR filter through expensive convolution
// Important: do either of the 3 options below
// option 1: apply a high pass on the side, with a cutoff of nyquist / 4
e.free; e = Buffer.new(s);
(
[1.0, -1.0].do({ arg x,y;
FluidBufCompose.process(s, d, gain: x, destStartFrame: y, destination: e, destGain: 1.0);
});
)
// option 2: apply a high pass on the side, with a cutoff of nyquist / 10
e.free; e = Buffer.new(s);
(
[0.8, -0.32, -0.24, -0.16, -0.08].do({ arg x,y;
FluidBufCompose.process(s, d, gain: x, destStartFrame: y, destination: e, destGain: 1.0);
});
)
// option 3: apply a high pass on the side, with a cutoff of nyquist / 100
e.free; e = Buffer.new(s);
(
[0.982494, -0.066859, -0.064358, -0.061897, -0.059477, -0.057098, -0.054761, -0.052466, -0.050215, -0.048007, -0.045843, -0.043724, -0.041649, -0.03962, -0.037636, -0.035697, -0.033805, -0.031959, -0.030159, -0.028406, -0.026699, -0.025038, -0.023425, -0.021857, -0.020337].do({ arg x,y;
FluidBufCompose.process(s, d, gain: x, destStartFrame: y, destination: e, destGain: 1.0);
});
)
// play the high-passed side buffer
e.play;
// if you want to try the other filters, do not forget to clear the destination buffer since it will add programmatically onto itself and would not create the expected frequency response
// decode the MS back to stereo
(
FluidBufCompose.process(s,c, numChans: 2, gain: -3.0.dbamp, destination: f);
FluidBufCompose.process(s,e, gain: -3.0.dbamp, destination: f, destGain: 1.0);
FluidBufCompose.process(s,e, gain: -3.0.dbamp * -1.0, destination: f, destStartChan: 1, destGain: 1.0);
)
// play the MS processed version
f.play;
// compare with the original
b.play;
::
::

69
release-packaging/ignore/Examples/buffer_compositing/bufcompose-MS-FIR.sc
Unescape Escape View File

@ -0,0 +1,69 @@
// A complex example of using composition as an Mid-Side FIR filtering process
// load a stereo buffer and initialise the many destinations
(
b = Buffer.read(s,File.realpath(FluidBufCompose.class.filenameSymbol).dirname.withTrailingSlash ++ "../AudioFiles/Tremblay-SA-UprightPianoPedalWide.wav");
c = Buffer.new(s);
d = Buffer.new(s);
e = Buffer.new(s);
f = Buffer.new(s);
)
// encode the mid (in c) and the side (in d)
(
FluidBufCompose.process(s,b, numChans: 1, gain: -3.0.dbamp, destination: c);
FluidBufCompose.process(s,b, numChans: 1, gain: -3.0.dbamp, destination: d);
FluidBufCompose.process(s,b, numChans: 1, gain: -3.0.dbamp, startChan: 1, destination: c, destGain: 1.0);
FluidBufCompose.process(s,b, numChans: 1, gain: -3.0.dbamp * -1.0, startChan: 1, destination: d, destGain: 1.0);
)
// (optional) compare auraly the stereo with the MS
b.play;
{PlayBuf.ar(1,[c,d])}.play;
// The geeky bit: copy the side (buffer d) on itself with specific amplitudes and delays, in effect applying a FIR filter through expensive convolution
// Important: do either of the 3 options below
// option 1: apply a high pass on the side, with a cutoff of nyquist / 4
e.free; e = Buffer.new(s);
(
[1.0, -1.0].do({ arg x,y;
FluidBufCompose.process(s, d, gain: x, destStartFrame: y, destination: e, destGain: 1.0);
});
)
// option 2: apply a high pass on the side, with a cutoff of nyquist / 10
e.free; e = Buffer.new(s);
(
[0.8, -0.32, -0.24, -0.16, -0.08].do({ arg x,y;
FluidBufCompose.process(s, d, gain: x, destStartFrame: y, destination: e, destGain: 1.0);
});
)
// option 3: apply a high pass on the side, with a cutoff of nyquist / 100
e.free; e = Buffer.new(s);
(
[0.982494, -0.066859, -0.064358, -0.061897, -0.059477, -0.057098, -0.054761, -0.052466, -0.050215, -0.048007, -0.045843, -0.043724, -0.041649, -0.03962, -0.037636, -0.035697, -0.033805, -0.031959, -0.030159, -0.028406, -0.026699, -0.025038, -0.023425, -0.021857, -0.020337].do({ arg x,y;
FluidBufCompose.process(s, d, gain: x, destStartFrame: y, destination: e, destGain: 1.0);
});
)
// play the high-passed side buffer
e.play;
// if you want to try the other filters, do not forget to clear the destination buffer since it will add programmatically onto itself and would not create the expected frequency response
// decode the MS back to stereo
(
FluidBufCompose.process(s,c, numChans: 2, gain: -3.0.dbamp, destination: f);
FluidBufCompose.process(s,e, gain: -3.0.dbamp, destination: f, destGain: 1.0);
FluidBufCompose.process(s,e, gain: -3.0.dbamp * -1.0, destination: f, destStartChan: 1, destGain: 1.0);
)
// play the MS processed version
f.play;
// compare with the original
b.play;
::
Write Preview
Loading…
Cancel
Save