49 lines
1.2 KiB
Racket
49 lines
1.2 KiB
Racket
#lang scribble/manual
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@(require (for-label racket))
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@title{(pv-bin-scramble buffer wipe width trig)}
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randomizes the order of the bins. The trigger will select a new
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random ordering.
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buffer - fft buffer.
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wipe - scrambles more bins as wipe moves from zero to one.
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width - a value from zero to one, indicating the maximum randomized
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distance of a bin from its original location in the spectrum.
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trig - a trigger selects a new random ordering.
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@racketblock[
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(with-sc3
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(lambda (fd)
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(async fd (b-alloc 10 2048 1))
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(async fd (b-alloc-read 12 "/home/rohan/audio/metal.wav" 0 0))))
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]
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@racketblock[
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(let* ((a (play-buf 1 12 (buf-rate-scale kr 12) 1 0 1))
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(f (fft* 10 a))
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(g (pv-bin-scramble f
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(mouse-x kr 0.0 1.0 0 0.1)
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(mouse-y kr 0.0 1.0 0 0.1)
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(impulse kr 4 0)))
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(h (ifft* g)))
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(audition (out 0 (mul 0.5 (mce2 h h)))))
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]
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careful - reads adc!
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@racketblock[
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(let* ((a (mul (sound-in (mce2 0 1)) 4.0))
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(f (fft* 10 a))
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(g (pv-bin-scramble f
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(mouse-x kr 0.25 1.0 0 0.1)
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(mouse-y kr 0.25 1.0 0 0.1)
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(impulse kr (mul-add (lf-noise0 kr 2) 8 10) 0)))
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(h (ifft* g)))
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(audition (out 0 (pan2 h 0 0.5))))
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]
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