34 lines
1.2 KiB
Racket
34 lines
1.2 KiB
Racket
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#lang racket
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;; status - working as of 20220819
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;; aleatoric quartet (jmcc)
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(define aleatoric-quartet
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(let* ((amp 0.4)
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(density (mouse-x kr 0.01 1 0 0.1))
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(dmul (mul (recip density) (mul 0.5 amp)))
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(dadd (add (neg dmul) amp))
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(rapf (lambda (i)
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(let ((r (mce2 (rand 0 0.05) (rand 0 0.05))))
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(allpass-n i 0.05 r 1))))
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(rapfn (lambda (n i)
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((foldl1 compose (replicate n rapf)) i)))
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(mk-f (lambda ()
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(let* ((i0 (i-rand 0 2))
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(r0 (select i0 (mce3 1 0.5 0.25)))
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(r1 (rand -30 30))
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(n0 (lf-noise0 kr r0))
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(m (u:round (mul-add n0 7 (add 66 r1)) 1)))
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(midi-cps (lag m 0.2)))))
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(mk-s (lambda (_)
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(let* ((f (recip (mk-f)))
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(r (rand -1 1))
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(n0 (pink-noise ar))
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(n1 (lf-noise1 kr 8))
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(x (mul n0 (u:max 0 (mul-add n1 dmul dadd)))))
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(pan2 (comb-l x 0.02 f 3) r 1))))
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(g (mix-fill 4 mk-s)))
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(leak-dc (rapfn 4 g) 0.995)))
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(audition (out 0 aleatoric-quartet))
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