mirror of
https://github.com/cookiengineer/audacity
synced 2025-05-08 07:42:39 +02:00
ac9148e48f
... Because xgettext will just remove the \, not replace \n with newline. That's consistent with Lisp reader behavior in this documentation: http://www.lispworks.com/documentation/lw70/CLHS/Body/02_de.htm The XLisp reader, which replaces \n with newline, is nonstandard. So, to accommodate xgettext, use (format nil "...~%...") instead, or where you can't do that in a $ header line, just make a line break inside the "" There are a few "\n" left alone in sample-data-export.ny which are neither in $ lines nor inside (_ "...")
66 lines
2.6 KiB
Common Lisp
66 lines
2.6 KiB
Common Lisp
;nyquist plug-in
|
|
;version 4
|
|
;type process spectral
|
|
;preview linear
|
|
$name (_"Spectral edit parametric EQ")
|
|
;manpage "Spectral_edit_parametric_EQ"
|
|
$action (_"Filtering...")
|
|
$author (_"Paul Licameli")
|
|
$copyright (_"Released under terms of the GNU General Public License version 2")
|
|
|
|
;; SpectralEditParametricEQ.ny by Paul Licameli, November 2014.
|
|
;; Updated by Steve Daulton 2014 / 2015.
|
|
;; Released under terms of the GNU General Public License version 2:
|
|
;; http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
|
|
|
|
$control control-gain (_"Gain (dB)") real "" 0 -24 24
|
|
|
|
(defun wet (sig gain fc bw)
|
|
(eq-band sig fc gain (/ bw 2)))
|
|
|
|
(defun result (sig)
|
|
(let*
|
|
((f0 (get '*selection* 'low-hz))
|
|
(f1 (get '*selection* 'high-hz))
|
|
(fc (get '*selection* 'center-hz))
|
|
(bw (get '*selection* 'bandwidth))
|
|
(tn (truncate len))
|
|
(rate (snd-srate sig))
|
|
(transition (truncate (* 0.01 rate))) ; 10 ms
|
|
(t1 (min transition (/ tn 2))) ; fade in length (samples)
|
|
(t2 (max (- tn transition) (/ tn 2))) ; length before fade out (samples)
|
|
(breakpoints (list t1 1.0 t2 1.0 tn))
|
|
(env (snd-pwl 0.0 rate breakpoints)))
|
|
(cond
|
|
((not (or f0 f1)) ; This should never happen for a 'spectral' effect.
|
|
(throw 'error-message (format nil (_"~aPlease select frequencies.") p-err)))
|
|
((not f0)
|
|
(throw 'error-message (format nil (_"~aLow frequency is undefined.") p-err)))
|
|
((not f1)
|
|
(throw 'error-message (format nil (_"~aHigh frequency is undefined.") p-err)))
|
|
((and fc (= fc 0))
|
|
(throw 'error-message (format nil (_"~aCenter frequency must be above 0 Hz.") p-err)))
|
|
((and f1 (> f1 (/ *sound-srate* 2)))
|
|
(throw 'error-message
|
|
(format nil (_"~aFrequency selection is too high for track sample rate.~%~
|
|
For the current track, the high frequency setting cannot~%~
|
|
be greater than ~a Hz")
|
|
p-err (/ *sound-srate* 2))))
|
|
((and bw (= bw 0))
|
|
(throw 'error-message
|
|
(format nil (_"~aBandwidth is zero (the upper and lower~%~
|
|
frequencies are both ~a Hz).~%~
|
|
Please select a frequency range.")
|
|
p-err f0)))
|
|
;; If centre frequency band is above Nyquist, do nothing.
|
|
((and fc (>= fc (/ *sound-srate* 2.0)))
|
|
nil)
|
|
(t (sum (prod env (wet sig control-gain fc bw))
|
|
(prod (diff 1.0 env) sig))))))
|
|
|
|
(catch 'error-message
|
|
(setf p-err (format nil (_"Error.~%")))
|
|
(if (= control-gain 0)
|
|
nil ; Do nothing
|
|
(multichan-expand #'result *track*)))
|