mirror of
https://github.com/cookiengineer/audacity
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8f5629a2a6
Fixed some verification errors, Removed some redundant translation strings, Define manpage for rms.ny.
68 lines
2.3 KiB
Common Lisp
68 lines
2.3 KiB
Common Lisp
;nyquist plug-in
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;version 4
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;type analyze
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;name "Measure RMS"
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;manpage "Measure_RMS"
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;action "Measuring RMS level..."
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;author "Steve Daulton"
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;release 2.3.1
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;copyright "Released under terms of the GNU General Public License version 2"
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;; Released under terms of the GNU General Public License version 2:
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;; http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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;;
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;; For information about writing and modifying Nyquist plug-ins:
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;; https://wiki.audacityteam.org/wiki/Nyquist_Plug-ins_Reference
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;; This plug-in demonstrates how authors of Nyquist plug-ins may add translations
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;; for output messages. It is not currently possible to provide translations for strings
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;; in the header comments (such as the plug-in name) of 3rd party plug-ins.
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;; Translations strings:
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;; The "en" translation is not normally required unless the original text is in another
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;; language, but it can make testing easier.
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(setf *locale*
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'(("en" (("Left" "Left")
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("Right" "Right")
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("Stereo" "Stereo")
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("Mono" "Mono")
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("dB" "dB")))
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("de" (("Left" "Links")
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("Right" "Rechts")
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("Stereo" "Stereo")
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("Mono" "Mono")
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("dB" "dB")))
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("es" (("Left" "Izquierda")
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("Right" "Derecha")
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("Stereo" "Estéreo")
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("Mono" "Mono")
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("dB" "dB")))
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("fr" (("Left" "Gauche")
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("Right" "Droite")
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("Stereo" "Stéréo")
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("Mono" "Mono")
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("dB" "dB")))
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("ru" (("Left" "Левый")
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("Right" "Правый")
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("Stereo" "Стерео")
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("Mono" "Моно")
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("dB" "дБ")))))
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(defun stereo-rms(ar)
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;;; Stereo RMS is the root mean of all (samples ^ 2) [both channels]
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(let ((left-mean-sq (* (aref ar 0)(aref ar 0)))
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(right-mean-sq (* (aref ar 1)(aref ar 1))))
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(sqrt (/ (+ left-mean-sq right-mean-sq) 2.0))))
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(let ((rms (get '*selection* 'rms)))
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(if (arrayp rms)
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(format nil "~a: \t~a ~a~%~
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~a: \t~a ~a~%~
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~a: \t~a ~a"
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(_ "Left") (linear-to-db (aref rms 0)) (_ "dB")
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(_ "Right") (linear-to-db (aref rms 1)) (_ "dB")
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(_ "Stereo") (linear-to-db (stereo-rms rms)) (_ "dB"))
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(format nil "~a: \t~a ~a" (_ "Mono")(linear-to-db rms)(_ "dB"))))
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