mirror of
https://github.com/cookiengineer/audacity
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34 lines
1.4 KiB
Common Lisp
34 lines
1.4 KiB
Common Lisp
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;nyquist plug-in
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;version 3
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;type generate
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;categories "http://lv2plug.in/ns/lv2core#GeneratorPlugin"
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;name "Pluck..."
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;action "Generating pluck sound..."
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;info "modified by David R. Sky\nReleased under terms of the GNU General Public License version 2 \nMIDI values for C notes: 36, 48, 60 [middle C], 72, 84, 96."
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;control p "Pluck MIDI pitch" int "" 60 1 127
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;control fade "Fade-out type" choice "abrupt,gradual" 0
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;control dur "Duration [seconds]" real "" 1 0.1 30
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; original pluck.ny modified by David R.Sky October 2007
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; [vastly simplified later]
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; to give user option to use [default] abrupt or gradual fade-out,
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; and ability to make pluck sound up to 30 seconds in duration.
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; Modified January 2007 to use 'snd-pluck' by edgar-rft@web.de
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; instead of the Nyquist 'pluck' function, and normalise to 0.8
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; maximum amplitude. As defined in Audacity, 'pluck' has
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; incorrect length duration and clipping at the start which gives
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; rise to DC offset. Using 'snd-pluck' avoids the clipping and
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; offset so we don't need the highpass8 filter that we used before.
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; set final-amp for abrupt or gradual fade
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(setf final-amp (if (= fade 1) 0.001 0.000001))
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(let* ((pluck-sound (snd-pluck *sound-srate* (step-to-hz p) 0 dur final-amp))
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(max-peak (peak pluck-sound ny:all)))
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(scale (/ 0.8 max-peak) pluck-sound))
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;arch-tag: bebc6cb8-3bb0-42d5-a467-df6bd1a7f1e4 |