rsc3/doc/examples/graph/_scm/shifting-pulses.scm

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2022-08-24 13:53:18 +00:00
;; shifting pulses (rd)
(import (rnrs) (sosc) (rsc3) (rhs))
(define wrp
(lambda (i l r)
(lin-lin i -1 1 l r)))
(define prt
(lambda (f a)
(let ((f* (mul f (mul (wrp (sin-osc kr (rand 0.2 0.9) 0) 1 1.01)
(rand 0.95 1.05)))))
(mul (sin-osc ar (mce2 f f*) 0)
(mul a (clone 2 (rand 0.95 1.05)))))))
;; (audition (out 0 (prts 2 900 0.002)))
;; (audition (out 0 (prts 9 40 0.006)))
(define prts
(lambda (n f a)
(mix
(make-mce
(map
(lambda (f)
(prt f a))
(enum-from-then-to f (+ f f) (* n f)))))))
(define shifting-pulses
(let* ((n1 (clone 2 (brown-noise kr)))
(n2 (clone 2 (brown-noise kr)))
(n3 (clone 2 (brown-noise kr)))
(t (dust kr 0.75))
(l (latch t t))
(p (mul (pulse ar (wrp n1 2 (mce2 11 15)) 0.01) 0.1))
(f (wrp n2 300 1800))
(rq (wrp n3 0.01 2)))
(mrg2
(add4
(prts 2 900 0.002)
(prts 9 40 0.006)
(mul (formant ar (mce2 20 21) (wrp (lf-noise2 kr 2) 10 100) 200) 0.35)
(mul l (rlpf p f rq)))
(send-trig t 0 t))))
(audition (out 0 shifting-pulses))