comb_fb_from_rtsixty   xtlang


Defined in:  https://github.com/digego/extempore/tree/v0.8.9/libs/core/audio_dsp.xtm

Implementation

;; helpfer function for newverb_c
;; where rt60 is in milliseconds from 0.0 - 5000.0
;; and delay is the comb filter delay in samples
(bind-func comb_fb_from_rtsixty
  (let ((fexponent 0.0)
        (rt 0.0))
    (lambda (rt60 delay)
      (set! fexponent (* -3.0 delay (/ 1.0 SRs)))
      (set! rt (* rt60 .001))
      (pow 10.0 (/ fexponent rt)))))


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