Audacity Forum

Steve did make an experimental plugin to do that ... http://forum.audacityteam.org/viewtopic ... 37#p203837

[Further reading ... http://forum.audacityteam.org/viewtopic ... 53#p258053 ]

... all my old audacity files (.aup) we're converted into PDF files. For some reason Windows thinks .aup files are PDFs, (NB: only the icon is changed: the files have not been "converted"). You'll have to tell Windows to associate .aup files with Audacity, see ... http://www.thewindowsclu...

Electric_Dreamer wrote:Is there any stretch (and opposite of stretch) which keeps a second and minute always equally long?.

If you set "stretch factor" to 1 there is no stretching, it just causes temporal-blurring, which is like forward & reverse reverb

Steve has since made a plugin to automate that process ...
http://wiki.audacityteam.org/wiki/Nyqui ... ir_Channel

ATTACHMENTS HUM Test Recording.wav File with HUM in the background. (1.63 MiB) That's mains hum . It can be removed by pasting the code below into Audacity's Nyquist prompt effect ... (setf *track* (notch2 *track* 60 10)) (setf *track* (notch2 *track* 120 30)) (setf *track* (notch2 *track* 180 30))...

Si vous regardez le spectrogramme (plutôt que la forme d'onde), vous pouvez identifier les motifs répétitifs ...

Excusez ma méfiance. Vous avez raison de vous méfier des cadeaux gratuits: ils pourraient être des chevaux de Troie. Si nous parlons du même plug-in (Curve EQ) il est actuellement payant. Leur plugin égaliseur gratuit est "Voxengo Marvel GEQ"... http://www.voxengo.com/product/marvelgeq/ h...

... Is there a way to check that the L and R channels are indeed identical? ... Split the pair into two mono tracks via " split stereo to mono ", then invert one of them, then play. There will be total silence if they are identical : total destructive interference . [ if you can hear fain...

Could try other audio recording-software to see if the problem is specific to Audacity,
e.g. microsoft's own-brand free app ... https://www.microsoft.com/en-us/store/p ... order-app/
or OCENaudio, also free, which is a bit like Audacity.

EricMC wrote:I've inherited a film soundtrack that seems to be a fraction out ...

There's free video-editing software called AVIdemux

It has a control where you can shift the timing of the sound-track ...