this post was submitted on 17 Feb 2024
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Audio Upscaler (lemmy.tf)
submitted 8 months ago by sabreW4K3@lemmy.tf to c/foss@beehaw.org
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Does anyone know of a local audio upscaler? Preferably Android based.

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[–] MangoPenguin@lemmy.blahaj.zone 15 points 8 months ago (1 children)

That's not really possible, once compressed the original audio is just missing entirely.

[–] sabreW4K3@lemmy.tf 2 points 8 months ago (2 children)

Can AI not do in the same way that it does with pictures?

[–] harald_im_netz@feddit.de 11 points 8 months ago (1 children)

Hello, Audio Engineer with some little knowledge regarding AI here.

What you think of is restoring frequencies, this is possible, and commonly used in plugins for audio restaurization. I might be mistaken, but this does not improve the bitrate, but the perceived quality (which is still lossy).

I don't think that there is a real interest to upscale quality (not perceived quality), especially for longer (> 1 minute) material.

[–] sabreW4K3@lemmy.tf 1 points 8 months ago (1 children)

It's funny you say that. I, as most people bought a bunch of CDs back in the day and ripped a bunch before I gave up my CD drive. At the time, storage was expensive and so I did what I could at the time with MP3. As storage gets cheaper (though not cheap enough for me to go lossless), I'd like to be able to upscale my music while keeping a similar file size and have my collection mature with me until storage becomes cheap enough for me to go lossless.

I can't be the only person who's thought of this.

[–] comicallycluttered@beehaw.org 11 points 8 months ago* (last edited 8 months ago) (2 children)

You're better off buying a cheap USB optical drive, re-ripping those CDs, and transcoding the files to something like Opus, which offers comparable quality to 320kbps MP3 files at lower bitrates (which also means smaller file sizes).

Or you can just "download" the FLAC versions, transcode those, and delete them after.

Also, kind of funny how this was posted just after someone complained about the same thing in the audio engineering subreddit.

[–] sabreW4K3@lemmy.tf 2 points 8 months ago

That is comedy gold! £1000 Ethernet cables? WTF?

[–] noodlejetski@lemm.ee 2 points 8 months ago* (last edited 8 months ago) (1 children)

wow, so now reddit won't let you see the post without logging in even if you open it through the old.reddit domain?

[–] comicallycluttered@beehaw.org 2 points 8 months ago* (last edited 8 months ago) (1 children)

This link should work.

I didn't realize that reddit formats the link completely differently when you "share" from its shitty app.

My bad, and sorry about that. Should work now.

[–] MangoPenguin@lemmy.blahaj.zone 6 points 8 months ago (1 children)

It wouldn't be the original audio, the AI would just be making up new content to fill in the blanks like it does with a photo.

[–] sabreW4K3@lemmy.tf 2 points 8 months ago (1 children)

That's not a bad thing though, right?

[–] Zoom@lemmy.studio 3 points 8 months ago (1 children)

If you're OK listening to a derivative work of your input. Otherwise, it's bad.

[–] sabreW4K3@lemmy.tf 2 points 8 months ago

Hmmm. I feel like this is one of those long-term studies that would be quite exciting? Am I wrong to be a little bit excited about programs learning how to guess correctly what should be where and subsequently how things should sound?