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
|
class:: FFTTrigger
summary:: Outputs the necessary signal for FFT chains, without doing an FFT on a signal
categories:: UGens>FFT
classmethods::
private:: categories
method:: new
argument:: buffer
a buffer to condition for FFT use
argument:: hop
the hop size for timing triggers (defaults to 0.5)
argument:: polar
a flag. If 0.0, the buffer will be prepared for complex data, if > 0.0, polar data is set up.
examples::
code::
// Reminder: This isn't the intended typical usage! It's OK to do this though.
(
x = {
var mags, phases, chain, sig;
// Create simple undulating magnitudes
mags = { FSinOsc.kr(ExpRand(0.1, 1)).range(0, 1) }.dup(100);
// Then give them a "rolloff" to make the sound less unpleasant
mags = mags * ((1, 0.99 .. 0.01).squared);
// Let's turn the bins on and off at different rates, I'm *sure* that'll sound interesting
mags = mags * { LFPulse.kr(2 ** IRand(-3, 5)).range(0, 1) }.dup(100);
// Let's ignore phase for now
phases = 0.dup(100);
chain = FFTTrigger(LocalBuf(512), 0.5);
// Now we can do the packing
chain = PackFFT(chain, 512, [mags, phases].flop.flatten, 0, 99, 1);
sig = IFFT(chain);
sig.dup
}.play
)
x.free;
b.free;
::
|
