48 lines
2 KiB
Scheme
48 lines
2 KiB
Scheme
;; (demand-env-gen rate levels times shapes curves gate reset
|
|
;; levelScale levelOffset timeScale doneAction)
|
|
|
|
;; levels - a demand ugen or any other ugen
|
|
|
|
;; times - a demand ugen or any other ugen if one of these ends,
|
|
;; the doneAction is evaluated
|
|
|
|
;; shapes - a demand ugen or any other ugen, the number given is
|
|
;; the shape number according to Env
|
|
|
|
;; curves - a demand ugen or any other ugen, if shape is 5, this
|
|
;; is the curve factor some curves/shapes don't work if
|
|
;; the duration is too short. have to see how to improve
|
|
;; this. also some depend on the levels obviously, like
|
|
;; exponential cannot cross zero.
|
|
|
|
;; gate - if gate is x >= 1, the ugen runs, if gate is 0 > x > 1,
|
|
;; the ugen is released at the next level (doneAction), if
|
|
;; gate is x < 0, the ugen is sampled end held
|
|
|
|
;; reset - if reset crosses from nonpositive to positive, the ugen
|
|
;; is reset at the next level, if it is > 1, it is reset
|
|
;; immediately.
|
|
|
|
;; Frequency envelope with random times.
|
|
|
|
(let* ((l (dseq dinf (make-mce (list 204 400 201 502 300 200))))
|
|
(t (drand dinf (make-mce (list 1.01 0.2 0.1 2.0))))
|
|
(y (mouse-y kr 0.01 3 1 0.1))
|
|
(f (demand-env-gen ar l (mul t y) 7 0 1 1 1 0 1 do-nothing)))
|
|
(audition (out 0 (mul (sin-osc ar (mul f (mce2 1 1.01)) 0) 0.1))))
|
|
|
|
;; Frequency modulation
|
|
|
|
(let* ((x (mouse-x kr -0.01 -4 0 0.1))
|
|
(y (mouse-y kr 1 3000 1 0.1))
|
|
(l (lambda () (dseq dinf (clone 32 (exp-rand 200 1000)))))
|
|
(t (mul sample-dur y))
|
|
(f (demand-env-gen ar (mce2 (l) (l)) t 5 x 1 1 1 0 1 do-nothing)))
|
|
(audition (out 0 (mul (sin-osc ar f 0) 0.1))))
|
|
|
|
;; gate. Mouse x on right side of screen toggles gate.
|
|
|
|
(let* ((x (mouse-x kr 0 1 0 0.1))
|
|
(l (u:round (dwhite dinf 300 1000) 100))
|
|
(f (demand-env-gen kr l 0.1 5 0.3 (gt x 0.5) 1 1 0 1 do-nothing)))
|
|
(audition (out 0 (mul (sin-osc ar (mul f (mce2 1 1.21)) 0) 0.1))))
|