Audio restoration

[maudit]

I paste here a message that I maybe wrote before in a less appropriate section:

if is possible and simple, I'd like to know how to restore this audio a bit,
as it is so bad, it's like "muffled" / "cottoned" and also has a lot of background rustle/noise.
can I with some avisynth plugin?
or maybe with audacity or others?

audio samples, one is from a NTSC DVD, the other, much better, from a 25p WEB-DL,
but I can't use it cause the WEB is missing thousands frames.
https://www.dropbox.com/scl/fo/vx24sof4reqfujovufbbe/h?rlkey=4antjnt9hd6nifnr2dgndjui4&dl=0

any way to fix DVD audio to sound more like the WEB one?
cleaning background noise, enhance the voices freq so they are not so "gloomy, muffled"?

[davexnet]

You should be using an Audio editor, Audacity is free.

In general, using EQ you can mitigate the "muddiness" and make it sound clearer.
Then perhaps a small amount of compression to reduce the peaks.

[maudit]

You should be using an Audio editor, Audacity is free.

In general, using EQ you can mitigate the "muddiness" and make it sound clearer.
Then perhaps a small amount of compression to reduce the peaks.

ok, well I'm too noob to use the EQ. anyway using a value of 10 with the noise reducer effect, helps a lot.
Maybe I'll try with compressor too, but there are too many sliders which Idk what they do. it's a bit complicated.

thanks for the tips.

any avisynth plugin similar to the audacity one exists for noise removing?

[jagabo]

Try the crystalizer filter in ffmpeg:

ffmpeg -i dull.wav -vn -af volume=0.5,crystalizer=10 bright.wav

You may want to apply a low pass or noise reduction filter afterward.

[Subtitles]

The file has been deleted from DropBox so I can't really listen to it.
If you want to get rid of background noise, then perhaps you can separate the vocals (speech) with software such as Spleeter (By Deezer)
Audacity doesn't have the option unfortunately.
https://github.com/deezer/spleeter
Several software include it such as Acoustica 7 by Acon Digital (free 30 days trial should be enough for your DVD) and others which are more complicated.
You can also try Spleeter GUI
https://makenweb.com/SpleeterGUI

[ProWo]

...audio samples, one is from a NTSC DVD, the other, much better, from a 25p WEB-DL,
but I can't use it cause the WEB is missing thousands frames.

But you can extend the length of the 25fps (PAL) audio to 23.976fps (NTSC).
Use clever FFmpeg-GUI.


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