«analyze a sample with SCMIR and sort sample segments by similarity» by grirgz
on 15 Oct'21 13:01 in1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
~file = "~/Musique/sc/samplekit/loop/lovin.flac".standardizePath; e = SCMIRAudioFile(~file, [[MFCC, 13], [Chromagram, 12]]); // open file for SCMIR b = Buffer.read(Server.default, ~file); // buffer for the Pbind {e.extractFeatures()}.fork; // extract features before creating similarityMatrix m = e.similarityMatrix(unit:10, metric:2); // create similarityMatrix ( // simple buffer player SynthDef(\playersec, { arg out=0, amp=0.1, gate=1, pan=0, freq=200, bufnum, speed=1, pos=0, doneAction=2, loop=0, trigger=1, velamp=1; // pos in seconds var sig; var sig1; sig = PlayBuf.ar(2, bufnum, BufRateScale.kr(bufnum) * speed, trigger, startPos: (pos*BufSampleRate.kr(bufnum)), doneAction:doneAction, loop: loop); sig = sig * EnvGen.ar(\adsr.kr(Env.adsr(0.001,0,1,0.01)),gate,doneAction:doneAction); //sig = Pan2.ar(sig, pan, 1).sum; Out.ar(out, sig * \gain.kr(1) * velamp); }).add; ); ( Pdef(\sortsample, Pbind( \instrument, \playersec, \bufnum, b, // take sample at column 105 and play other columns by order of similarity // pos is position in the sample in seconds // column 105 start at 105*m.reducedrows+0 and ends at 105*m.reducedrows+m.reducedcolumns // we take this slice of array, sort it and return the indexes (.order) // then scale column number to position in second \pos, Pseq(m.matrix[105*m.reducedrows+(0..m.reducedcolumns-1)].order) * b.duration/m.reducedrows, \sustain, b.duration/m.reducedrows, \dur, 1, \gain, 1, ) ).play; );
reception
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