Classes (extension) | UGens > GranularSynthesis

Concat2 : UGen : AbstractFunction : Object
ExtensionExtension

Concatenative Cross-Synthesis on Live Streams
Source: Concat.sc

Description

See Concat for a longer description. This version two is a "better live concatenative synthesiser".

Class Methods

Concat2.ar(control, source, storesize: 1, seektime: 1, seekdur: 1, matchlength: 0.05, freezestore: 0, zcr: 1, lms: 1, sc: 1, st: 0, randscore: 0, threshold: 0.01, mul: 1, add: 0)

Arguments:

control

audio rate input, acts as control

source

audio rate input, source for cross-synthesis

storesize

size of source store sample buffer in seconds

seektime

Time in seconds into the past to start searching for matches

seekdur

Time in seconds from seektime towards the present to test matches

matchlength

Match length in seconds (this will be rounded to the nearest FFT frame)

freezestore

Stop collecting novel source input, keep store (database) fixed

zcr

Weight for zero crossing rate feature

lms

Weight for log mean square amplitude feature

sc

Weight for spectral centroid feature

st

Weight for spectral tilt feature

randscore
threshold

Inherited class methods

Instance Methods

Inherited instance methods

Examples

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