20 lines
535 B
Scheme
20 lines
535 B
Scheme
|
;; (pv-local-max buffer threshold)
|
||
|
|
|
||
|
|
;; Pass bins which are a local maximum
|
||
|
|
|
||
|
|
;; Passes only bins whose magnitude is above a threshold and above
|
||
|
|
;; their nearest neighbors.
|
||
|
|
|
||
|
|
;; buffer - fft buffer.
|
||
|
|
;; threshold - magnitude threshold.
|
||
|
|
|
||
|
|
(with-sc3
|
||
|
|
(lambda (fd)
|
||
|
|
(async fd (b-alloc 10 2048 1))
|
||
|
|
(async fd (b-alloc-read 12 "/home/rohan/audio/metal.wav" 0 0))))
|
||
|
|
|
||
|
|
(let* ((a (play-buf 1 12 (buf-rate-scale kr 12) 0 0 1))
|
||
|
|
(f (fft* 10 a))
|
||
|
|
(h (pv-local-max f (mouse-x kr 0 100 0 0.1))))
|
||
|
|
(audition (out 0 (mul (ifft* h) 0.5))))
|