WT_Freeze Hold wavelet coefficients stationary

WT_FilterScale(buffer, freeze, scaleselect)

Passes particular scales while suppressing (zeroing coefficients) from others

buffer - dwt buffer.

freeze - if freeze > 0 then coefficients are frozen at current values

scaleselect - Value from 0.0 to 1.0, chooses how many scales to freeze. Always freezes lowest detail scale (else would be equivalent to freeze=0)

s.boot;

(

b = Buffer.alloc(s,2048,1);

c = Buffer.read(s,"sounds/a11wlk01.wav");

)

(

//trig with MouseY, fully right on MouseY freezes all scales, move left to hold only some scales

SynthDef("help-Freeze2", { arg out=0, bufnum=0, soundBufnum=2;

var in, chain;

in = PlayBuf.ar(1, soundBufnum, BufRateScale.kr(soundBufnum), loop: 1);

chain = DWT(bufnum, in);

chain = WT_Freeze(chain, MouseY.kr > 0.5, MouseX.kr(0.0,1.1)); 

Out.ar(out, 0.5 * IDWT(chain).dup);

}).play(s,[\out, 0, \bufnum, b, \soundBufnum, c]);

)

(

SynthDef("help-Freeze", { arg out=0, bufnum=0;

var in, chain;

in = SinOsc.ar(LFNoise1.kr(5.2,250,400));

chain = DWT(bufnum, in);

// moves in and out of freeze

chain = WT_Freeze(chain, SinOsc.kr(0.2) ); 

Out.ar(out, 0.5 * IDWT(chain).dup);

}).play(s,[\out, 0, \bufnum, b]);

)

b.free; c.free;