90 lines
2.7 KiB
Scheme
90 lines
2.7 KiB
Scheme
;; (stepper trig reset min max step resetval)
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;; stepper pulse counter. Each trigger increments a counter which is
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;; output as a signal. The counter wraps between min and max.
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(with-sc3
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(lambda (fd)
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(let ((a (list 97.999 195.998 523.251 466.164 195.998
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233.082 87.307 391.995 87.307 261.626
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195.998 77.782 233.082 195.998 97.999
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155.563)))
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(async fd (b-alloc 10 128 1))
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(send fd (b-setn1 10 0 a)))))
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;; Function composition...
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(define (seq s l)
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(if (null? l)
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s
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(seq ((car l) s) (cdr l))))
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(let* ((rate (mouse-x kr 1 5 1 0.1))
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(clock (impulse kr rate 0))
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(env (decay2 clock 0.002 2.5))
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(index (stepper clock 0 0 15 1 0))
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(freq (buf-rd 1 kr 10 index 1 1))
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(ffreq (add (if #t
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(lag2 freq 0.1)
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(mul (mouse-y kr 80 1600 1 0.1) (add (Mul env 4) 2)))
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(mce2 0 0.3)))
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(lfo (sin-osc kr 0.2 (mce4 0 (/ pi 2) 0.0024 0.0025)))
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(rvb (lambda (s) (allpass-n s
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0.05
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(clone 2 (rand 0 0.05))
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(rand 1.5 2.0))))
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(proc (list
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(lambda (s) (mul (rlpf s ffreq 0.3) env))
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(lambda (s) (mul (rlpf s ffreq 0.3) env))
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(lambda (s) (mul s 0.2))
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;; Echo
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(lambda (s) (mul-add (comb-l s 1 (fdiv 0.66 rate) 2) 0.8 s))
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;; Reverb
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(lambda (s) (add s (mul (seq s (replicate 5 rvb)) 0.3)))
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(lambda (s) (leak-dc s 0.1))
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;; Flanger
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(lambda (s) (add (delay-l s 0.1 lfo) s))
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;; Slight bass emphasis
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(lambda (s) (one-pole s 0.9))))
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(init (mix (lf-pulse ar (mul freq (mce3 1 3/2 2)) 0 0.3))))
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(audition (out 0 (seq init proc))))
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;; Pattern randomizer....
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(with-sc3
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(lambda (fd)
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(let ((p (map (lambda (e)
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(midi-cps (+ 36 (s:degree-to-key e (list 0 3 5 7 10) 12))))
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(map floor (replicate-m 16 (random 0 15))))))
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(send fd (b-setn1 10 0 p)))))
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;; A shorter variant, using some simple syntax...
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(define-syntax seq*
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(syntax-rules ()
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((_ i s f ...)
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(seq i (list (lambda (s) f) ...)))))
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(let* ((rate (mouse-x kr 1 5 1 0.1))
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(clock (impulse kr rate 0))
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(env (decay2 clock 0.002 2.5))
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(index (stepper clock 0 0 15 1 0))
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(freq (buf-rd 1 kr 10 index 1 1))
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(ffreq (add (lag2 freq 0.1) (mce2 0 0.3)))
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(lfo (sin-osc kr 0.2 (mce4 0 (/ pi 2) 0.0024 0.0025)))
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(rvb (lambda (s) (allpass-n s
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0.05
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(clone 2 (rand 0 0.05))
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(rand 1.5 2.0))))
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(init (mix (lf-pulse ar (mul freq (mce3 1 3/2 2)) 0 0.3)))
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(proc (seq* init
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s
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(mul (rlpf s ffreq 0.3) env)
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(mul (rlpf s ffreq 0.3) env)
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(mul s 0.2)
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(mul-add (comb-l s 1 (fdiv 0.66 rate) 2) 0.8 s)
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(add s (mul (seq s (replicate 5 rvb)) 0.3))
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(leak-dc s 0.1)
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(add (delay-l s 0.1 lfo) s)
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(one-pole s 0.9))))
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(audition (out 0 proc)))
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