tarai mawashi in overtone

tarai.clj

(ns tarai.core
  (:use [overtone.live]))

;; basic.clj より
(defsynth foo [freq 200 dur 0.5]
  (let [src (saw [freq (* freq 1.01) (* 0.99 freq)])
        low (sin-osc (/ freq 2))
        filt (lpf src (line:kr (* 10 freq) freq 10))
        env (env-gen (perc 0.1 dur) :action FREE)]
    (out 0 (pan2 (* 0.1 low env filt)))))

;; この関数はお好みで。
(defn foo-play [x y z j]
  (foo (* 110 (+ x 3)) 1.0)
  (Thread/sleep 150)
  (foo (* 110 (+ y 3)) 1.0)
  (Thread/sleep 150)
  (foo (* 110 (+ z 3)) 1.0)
  (Thread/sleep 150)
  (foo (* 110 (+ j 3)) 1.0)
  (Thread/sleep 150))

(defn tarai [x y z j]
  (println x y z j)
  (foo-play x y z j)
  (if (<= x y)
    y
    (tarai (tarai (- x 1) y z j) (tarai (- y 1) z j x) (tarai (- z 1) j x y) (tarai (- j 1) x y z))))

(tarai 8 3 2 3)