voscil (rd)

> import Sound.SC3
> import qualified Sound.SC3.UGen.Unsafe as U
> import System.Random

> main =
>   let { rrand l r = getStdRandom (randomR (l, r))
>       ; lfn r = U.lfNoise0 kr r
>       ; b = 32
>       ; hb = (constant b - 1) / 2
>       ; bn = 8192 * 4
>       ; rt = 6
>       ; f = 600
>       ; s = let { v = vOsc ar (lfn rt * hb + hb) (f * 2) 0
>                 ; o = let { bf = lfn rt * 40 + 600
>                           ; nh = lfn rt * 16 + 24 }
>                       in blip ar bf nh * (lfn rt * 0.1 + 0.1)
>                 ; p = pan2 (v + o) (lfn rt) (lfn rt * 0.5 + 0.5)
>                 ; w = vOsc ar (lfSaw kr (1 / rt) 0 * hb + hb) f 0
>                 ; q = pan2 w (lfn rt) (lfn rt * 0.5 + 0.5) }
>             in p + q
>       ; run fd = let r_set i = 
>                          do { m <- rrand 2 512
>                             ; j <- sequence (replicate m (rrand 0 bn))
>                             ; k <- sequence (replicate m (rrand (-1) 1))
>                             ; async fd (b_alloc i bn 1)
>                             ; send fd (b_set i (zip j k)) }
>                  in do { mapM_ r_set [0 .. (b - 1)]
>                        ; play fd (out 0 s) } }
>   in withSC3 run