/
convolution-tests.scd
217 lines (173 loc) · 5.29 KB
/
convolution-tests.scd
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// fixed (unchanging) impulse response
// cmd-. to stop
(
s.waitForBoot {
var c = Condition.new, cleanfunc = { CmdPeriod.remove(cleanfunc); b.free };
fork {
b = Buffer.alloc(s, 2048, 1);
CmdPeriod.add(cleanfunc);
s.sync;
a = {
RecordBuf.ar(BrownNoise.ar * EnvGen.ar(Env(#[0, 1, 0], #[0.5, 0.5], \sin), timeScale: b.duration, doneAction: 2), b, loop: 0);
0
}.play;
OSCpathResponder(s.addr, ['/n_end', a.nodeID], { |time, resp, msg|
resp.remove;
c.unhang;
}).add;
c.hang;
a = {
var freq = MouseX.kr(150, 450, warp: 1, lag: 0.1);
LeakDC.ar(Convolution2.ar(Impulse.ar(freq * [1, 5/4]).sum, b, framesize: b.numFrames) * -40.dbamp) ! 2;
}.play;
};
};
)
// multiple impulse responses for timbre control
(
s.waitForBoot {
var c = Condition.new, cleanfunc = { CmdPeriod.remove(cleanfunc); b.free };
fork {
b = Buffer.allocConsecutive(3, s, 2048, 1);
CmdPeriod.add(cleanfunc);
s.sync;
a = {
var sig = [BrownNoise.ar, PinkNoise.ar, WhiteNoise.ar];
sig.do { |chan, i|
RecordBuf.ar(chan * EnvGen.ar(Env(#[0, 1, 0], #[0.5, 0.5], \sin), timeScale: b[i].duration, doneAction: 2), b[i], loop: 0);
};
}.play;
OSCpathResponder(s.addr, ['/n_end', a.nodeID], { |time, resp, msg|
resp.remove;
c.unhang;
}).add;
c.hang;
a = {
var freq = MouseX.kr(150, 450, warp: 1, lag: 0.1),
index = MouseY.kr(0, 1.99, lag: 0.1),
iWhole = index.trunc(2),
iFrac = index - iWhole,
iAdjust = iFrac >= 1.0,
trig = Impulse.ar(freq),
bufs = b[0].bufnum + [iWhole + (2 * iAdjust), iWhole + 1],
convolvers = bufs.collect { |buf|
Convolution2.ar(trig, buf, HPZ1.kr(buf).abs, framesize: b[0].numFrames)
};
(
XFade2.ar(
// Select.ar(iWhole + (2 * iAdjust), convolvers),
// Select.ar(iWhole + 1, convolvers),
convolvers[0], convolvers[1],
iFrac.fold(0, 1) * 2 - 1
) * -30.dbamp
) ! 2;
}.play;
};
};
)
a.trace;
a.free;
LeakDC.ar(Convolution2.ar(Impulse.ar(freq), b, framesize: b.numFrames) * -35.dbamp) ! 2;
// "works" for pitch but we lose all guzheng color
// interesting that the attack gives a darker sound than the (noisier?) decay
// glisses sound like sliding on guitar strings, just a bit
// longer kernel?
f = SoundFile.openRead("/media/39ED-A99A/from-linux/xinghai/11-12-spring/max/GZ A.aif");
// f.seek(rrand(108802, 120000));
f.seek(rrand(1000, 15000));
f.readData(d = Signal.newClear(4096));
f.close;
d.plot
d = d * Env(#[0, 1, 0], 0.5 ! 2, \sin).discretize(d.size);
b.free;
b = Buffer.sendCollection(s, d, action: { "done".postln });
a = {
var freq = MouseX.kr(150, 450, warp: 1, lag: 0.1);
LeakDC.ar(Convolution2.ar(Impulse.ar(freq * [1, 5/4]).sum, b, framesize: b.numFrames) * -20.dbamp) ! 2;
}.play;
a.free;
// still can't hear gz quality
// buffer transitions are not smooth
b.free;
(
fork {
var c = Condition.new, f, d,
kernelsize = 4096,
hann = Env(#[0, 1, 0], 0.5 ! 2, \sin).discretize(kernelsize);
b = Buffer.allocConsecutive(5, s, kernelsize, 1);
s.sync;
f = SoundFile.openRead("/media/39ED-A99A/from-linux/xinghai/11-12-spring/max/GZ A.aif");
if(f.notNil) {
protect {
b.do { |buf, i|
f.seek(rrand(1000, 40000).debug(i));
f.readData(d = Signal.newClear(kernelsize));
fork {
buf.sendCollection(d * hann, action: { c.unhang });
};
c.hang;
};
"buffers ready".postln;
} { f.close };
};
}
)
a = {
var freq = MouseX.kr(150, 450, warp: 1, lag: 0.1),
index = MouseY.kr(0, b.size - 1.001, lag: 0.1),
iWhole = index.trunc(2),
iFrac = index - iWhole,
iAdjust = iFrac >= 1.0,
trig = Impulse.ar(freq),
bufs = b[0].bufnum + [iWhole + (2 * iAdjust), iWhole + 1],
convolvers = bufs.collect { |buf|
LeakDC.ar(Convolution2.ar(trig, buf, HPZ1.kr(buf).abs, framesize: b[0].numFrames))
};
(
Limiter.ar(XFade2.ar(
convolvers[0], convolvers[1],
iFrac.fold(0, 1) * 2 - 1
))
) ! 2;
}.play;
a.free;
// try part-conv with fingernail tremolo
f = SoundFile.openRead("/media/39ED-A99A/from-linux/xinghai/10-11-spring/max/guzheng all.wav");
f.seek(222277);
f.readData(d = Signal.newClear(53500 * 2));
f.close;
d.plot;
d = d[0, 2..] * Env(#[0, 1, 0], 0.5 ! 2, \sin).discretize(d.size div: 2);
d.plot;
f = SoundFile.new.headerFormat_("WAV").sampleFormat_("int24").numChannels_(1);
f.openWrite("~/share/SC/wk2011spr.git/Tests/gzkernel-short.wav".standardizePath);
f.writeData(d);
f.close;
b.free;
b = Buffer.readAndQuery(s, "~/share/SC/wk2011spr.git/Tests/gzkernel-short.wav".standardizePath);
c.free;
c = Buffer.alloc(s, PartConv.calcBufSize(1024, b), 1);
c.preparePartConv(b, 1024);
a = {
var freq = MouseX.kr(10, 450, warp: 1, lag: 0.1),
vibratoAmt = 0.2.midiratio,
vibrato = SinOsc.kr(5).exprange(vibratoAmt.reciprocal, vibratoAmt);
LeakDC.ar(
PartConv.ar(Impulse.ar(freq * vibrato * [1, 5/4]).sum, 1024, c) * -20.dbamp
) ! 2;
}.play;
a.free;
s.record;
a = {
var freq = EnvGen.kr(Env(#[0, 1, 1, 0.2], #[10, 4, 10], \sin), doneAction: 2).linexp(0, 1, 10, 262),
vibratoAmt = 0.2.midiratio,
vibrato = SinOsc.kr(LFNoise1.kr(0.4).range(3, 5)).exprange(vibratoAmt.reciprocal, vibratoAmt);
LeakDC.ar(
PartConv.ar(Impulse.ar(freq * vibrato * [1, 5/4]).sum, 1024, c) * -20.dbamp
) ! 2;
}.play;
a.free;
s.stopRecording;
fork {
SoundFile.normalize("/home/dlm/.local/share/SuperCollider/Recordings/SC_120401_183457.aiff", "~/share/SC/wk2011spr.git/docs/conv-demo.wav", "WAV", "int16", threaded: true)
};