1
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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
CLASS:: WaveLoss
summary:: Lose bits of your waves
categories:: UGens>Filters>Nonlinear
related:: Classes/Squiz
DESCRIPTION::
Uses the zero-crossings to divide an audio stream into tiny segments, and simply discards a fraction of the segments (replacing them with silence). The technique was described in a lecture by Trevor Wishart.
Parameters: the filter drops strong::drop:: out of strong::outof:: chunks. strong::mode:: can be 1 to drop chunks in a simple deterministic fashion (e.g. always dropping the first 30 out of a set of 40 segments), or 2 to drop chunks randomly but in an appropriate proportion.
CLASSMETHODS::
METHOD:: ar
argument:: in
argument:: drop
argument:: outof
argument:: mode
argument:: mul
argument:: add
METHOD:: kr
argument:: in
argument:: drop
argument:: outof
argument:: mode
argument:: mul
argument:: add
EXAMPLES::
code::
s.boot;
// Move the mouse left/right to see the gradation of the effect.
// Move up or down to choose mode. The modes sound very different.
(
x = {
var sig, mode;
sig = [SinOsc.ar, PinkNoise.ar].mean;
mode = MouseY.kr(1,2).round;
WaveLoss.ar(sig, MouseX.kr(0, 40), 40, mode: mode, mul: 0.1);
}.play;
)
x.free;
// Plotting shows quite clearly what's going on:
(
{
var sig;
sig = [SinOsc.ar, PinkNoise.ar].mean;
[sig, WaveLoss.ar(sig, 20, 40, mode: 2)];
}.plot(0.15);
)
// A stereo example, evolves over a couple of minutes - specify a breakbeat loop sample below, sounds good
b = Buffer.read(s,"sounds/amenfast.wav"); // remember to free the buffer later.
(
x = {
var sig, mode, woo;
sig = PlayBuf.ar(1, b.bufnum, BufRateScale.kr(b.bufnum) * 0.75, startPos: 92898, loop: 1);
woo = {
WaveLoss.ar(sig,
EnvGen.kr(Env.new([199, 199, 150, 150, 199, 250], [20, 40, 60, 60, 100]), doneAction:2)
+ (FSinOsc.kr(0.2 + XLine.kr(0.001, [1.3, 1.7], 90), 0, 50) * XLine.kr(0.00000001, 1, 60))
,
200, mode: 2, mul: 0.4);
}.dup;
woo = (woo * 0.9) + (woo.reverse * 0.1);
}.play;
)
x.free;
b.free;
::
|
