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class:: Concat2
summary:: Concatenative Cross-Synthesis on Live Streams
related:: Classes/Concat
categories:: UGens>GranularSynthesis
Description::
See link::Classes/Concat:: for a longer description. This version two is a "better live concatenative synthesiser".
classmethods::
method::ar
argument::control
audio rate input, acts as control
argument::source
audio rate input, source for cross-synthesis
argument::storesize
size of source store sample buffer in seconds
argument::seektime
Time in seconds into the past to start searching for matches
argument::seekdur
Time in seconds from seektime towards the present to test matches
argument::matchlength
Match length in seconds (this will be rounded to the nearest FFT frame)
argument::freezestore
Stop collecting novel source input, keep store (database) fixed
argument::zcr
Weight for zero crossing rate feature
argument::lms
Weight for log mean square amplitude feature
argument::sc
Weight for spectral centroid feature
argument::st
Weight for spectral tilt feature
argument::randscore
argument::threshold
Examples::
code::
b = Buffer.read(s,"sounds/a11wlk01.wav");
//match only on amplitude from audio in
(
SynthDef(\concat1, {arg bufnum, matchlength=0.01, freeze=0;
var concat, control, input;
control= SoundIn.ar;
input=PlayBuf.ar(1,bufnum,BufRateScale.kr(bufnum), loop:1);
concat= Concat2.ar(control,input,1.0,1.0,1.0,matchlength,freeze,0.0,1.0,0.0,0.0);
Out.ar(0,Pan2.ar(concat,0.0))}).add;
)
a=Synth(\concat1,[\bufnum, b.bufnum]);
a.set(\freeze, 0);
a.set(\matchlength, 0.01);
//synthesis controls audio in- beat box, then the synth drives bits of audio rhythmically
(
{
var concat, control, input;
control= SinOsc.ar(0.5)*Saw.ar(SinOsc.kr(LFNoise0.kr(MouseY.kr(0.01,1),3,4.5),0,50,MouseY.kr(120,500)));
input=SoundIn.ar;
concat= Concat2.ar(control,input,4.0,4.0,4.0,MouseX.kr(0.0,0.5),0,0.5,1.0,0.5,0.0);
Out.ar(0,Pan2.ar(concat,0.0))}.play
)
//audio in controls synthesis, low latency, match by ZCR and spec centroid
(
{
var concat, control, input, amp;
input= SinOsc.ar(2)*
Mix(Gendy3.ar(3,5,1.0,1.0,(Array.fill(5,{LFNoise0.kr(1.3.rand,1,2)})*MouseY.kr(100,3780,'exponential')),MouseY.kr(0.01,0.05),MouseY.kr(0.001,0.016),5,mul:0.1));
control=SoundIn.ar;
amp=Amplitude.ar(control);
concat= Concat2.ar(control,input,1.0,1.0,1.0,MouseX.kr(0.0,0.1),0,1.0,0.0,1.0,1.0);
Out.ar(0,Pan2.ar(10*concat*amp,0.0))}.play
)
//granulator
(
{
var concat, control, input;
control= Saw.ar(SinOsc.kr(LFNoise0.kr(MouseY.kr(0.01,1),3,4.5),0,10,MouseY.kr(12,100)));
input=PlayBuf.ar(1,b.bufnum,BufRateScale.kr(b.bufnum), loop:1);
concat= Concat2.ar(control,input,2.0,2.0,2.0,MouseX.kr(0.01,0.1),0,MouseY.kr(0.0,1.0),1.0,0.5);
Out.ar(0,Pan2.ar(concat,0.0))}.play
)
b = Buffer.read(s,"sounds/break2");
//beat resynthesis match by ZCR and spec centroid
(
SynthDef(\concatexample2, {arg bufnum, freeze=0;
var concat, control, input, amp;
input= SoundIn.ar;
control=PlayBuf.ar(1,bufnum,BufRateScale.kr(bufnum), loop:1);
amp=Amplitude.ar(control);
concat= Concat2.ar(control,input,5.0,5.0,5.0,MouseX.kr(0.0,0.1),freeze,MouseY.kr(0.0,1.0),0.0,1.0);
Out.ar(0,Pan2.ar(10*concat*amp,0.0))
}).add;
)
a=Synth(\concatexample2,[\bufnum, b.bufnum]);
a.set(\freeze, 1); //set this on or off to stay with a set of collected sounds
a.set(\freeze, 0); //set this on or off to stay with a set of collected sounds
::
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