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Bug 2336. Work around issue in Noise Gate.

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This commit is contained in:
SteveDaulton 2020-02-24 11:21:49 +00:00
parent d748c0816a
commit b651984b87
1 changed files with 23 additions and 19 deletions
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42
plug-ins/noisegate.ny
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@ -15,19 +15,20 @@ $copyright (_ "Released under terms of the GNU General Public License version 2"
$control mode (_ "Select Function") choice ((_ "Gate")
("Analyze" (_ "Analyse Noise Level")))
0
("Analyze" (_ "Analyse Noise Level")))
0
$control stereo-link (_ "Stereo Linking") choice (("LinkStereo" (_ "Link Stereo Tracks"))
("DoNotLink" (_ "Don't Link Stereo")))
0
("DoNotLink" (_ "Don't Link Stereo")))
0
$control low-cut (_ "Apply Low-Cut filter") choice ((_ "No")
("10Hz" (_ "10Hz 6dB/octave"))
("20Hz" (_ "20Hz 6dB/octave")))
0
$control gate-freq (_ "Gate frequencies above") float (_ "kHz") 0 0 10
$control level-reduction (_ "Level reduction") float (_ "dB") -12 -100 0
$control threshold (_ "Gate threshold") float (_ "dB") -48 -96 -6
$control attack (_ "Attack/Decay") float (_ "milliseconds") 250 10 1000
("10Hz" (_ "10Hz 6dB/octave"))
("20Hz" (_ "20Hz 6dB/octave")))
0
;; Work around bug 2336.
$control gate-freq (_ "Gate frequencies above (kHz)") float "" 0 0 10
$control level-reduction (_ "Level reduction (dB)") float "" -12 -100 0
$control threshold (_ "Gate threshold (dB)") float "" -48 -96 -6
$control attack (_ "Attack/Decay (ms)") float "" 250 10 1000
; Global variables
@ -42,15 +43,17 @@ $control attack (_ "Attack/Decay") float (_ "milliseconds") 250 10 1000
(defun error-check ()
(when (>= freq (* *sound-srate* 0.45)) ;10% below Nyquist should be safe maximum.
(throw 'err (format nil (_ "Error.~%~
\"Gate frequencies above: ~s kHz\"~%~
is too high for selected track.~%~
Set the control below ~a kHz.")
;; Work around bug 2012.
(throw 'err (format nil (_ "Error.
\"Gate frequencies above: ~s kHz\"
is too high for selected track.
Set the control below ~a kHz.")
gate-freq
(roundn (* 0.00045 *sound-srate*) 1))))
(when (< len 100) ;100 samples required
(throw 'err (format nil (_ "~%Insufficient audio selected.~%~
Make the selection longer than ~a ms.~%")
;; Work around bug 2012.
(throw 'err (format nil (_ "~%Insufficient audio selected.
Make the selection longer than ~a ms.")
(round-up (/ 100000 *sound-srate*))))))
@ -61,8 +64,9 @@ $control attack (_ "Attack/Decay") float (_ "milliseconds") 250 10 1000
(let* ((test-length (truncate (min len (/ *sound-srate* 2.0))))
(levm (peak-avg-db sig test-length))
(target (* 0.925 levm))) ;suggest 7.5% above noise level
(format nil "Peak based on first ~a seconds ~a dB~%~%~
Suggested Threshold Setting ~a dB."
;; Work around bug 2012.
(format nil (_ "Peak based on first ~a seconds ~a dB~%
Suggested Threshold Setting ~a dB.")
(roundn (/ test-length *sound-srate*) 2)
(roundn levm 2)
(roundn target 0))))