s-chirp (rd)

> let { tChoose t a = do { n <- tiRand 0 (fromIntegral (length a)) t
>                        ; return (select n (mce a)) }
>     ; x = mouseX KR 15 0 Linear 0.1
>     ; y = mouseY KR 15 27 Linear 0.1
>     ; scl = [0, 2, 3.2, 5, 7, 9, 10] }
> in do { t <- dust KR 9
>       ; b <- tChoose t [36, 48, 60, 72]
>       ; n <- liftM (* 0.04) (lfNoise1 KR (mce2 3 3.05))
>       ; d <- tiRand x y t
>       ; e <- liftM (decay2 t 0.005) (tRand 0.02 0.15 t)
>       ; o <- let { k = degreeToKey 0 d 12
>                  ; f = midiCPS (b + k + n)
>                  ; m = e * sinOsc AR f 0 * 0.2
>                  ; u = pulseDivider t 9 0 }
>              in do { r0 <- tRand 0.0075 0.125 u
>                    ; r1 <- tRand 0.05 0.15 u
>                    ; return (m * 0.5 + allpassC m 0.15 r0 r1) }
>       ; withSC3 (\fd -> do { async fd (b_alloc 0 7 1)
>                            ; send fd (b_setn1 0 0 scl)
>                            ; play fd (out 0 o) }) }

(let* ((x (MouseX kr 15 0 0 0.1))
       (y (MouseY kr 15 27 0 0.1))
       (scl (list 0 2 3.2 5 7 9 10))
       (t (Dust kr 9))
       (b (TChoose t (Mce 36 48 60 72)))
       (n (Mul (LFNoise1 kr (Mce 3 3.05)) 0.04))
       (d (TIRand x y t))
       (e (Decay2 t 0.005 (TRand 0.02 0.15 t)))
       (k (DegreeToKey 0 d 12))
       (f (MIDICPS (Add* b k n)))
       (m (Mul* e (SinOsc ar f 0) 0.2))
       (u (PulseDivider t 9 0))
       (r0 (TRand 0.0075 0.125 u))
       (r1 (TRand 0.05 0.15 u))
       (o (MulAdd m 0.5 (AllpassC m 0.15 r0 r1))))
  (with-sc3
   (lambda (fd)
     (->< fd (/b_alloc 0 7 1))
     (-> fd (/b_setn* 0 0 scl))
     (audition (Out 0 o)))))