Improve the Audio Quality of a Song with AI
How do you turn a low-quality MP3 into high-quality audio?
Upload the file here and run Improve Audio Quality on it. Files that sound dull were usually saved at a low bitrate, which throws away the top of the frequency range and often collapses the stereo image. Mastering tools can only reshape what survived that, so a dull track just gets louder. This tool regenerates the missing detail instead. In our test, a 32 kbps mono file with nothing above about 8 kHz came back as a 48 kHz stereo file with content up to about 20 kHz, and its level envelope still matched the source at 0.996 with no time offset. It is built for music, not speech: voice cleanup tools treat drums and reverb as noise and strip them out. One run costs 20 credits and returns two versions, and free accounts get 50 credits a month.
No subscription required
Works on the free plan, MP3 download included. 50 free credits every month.
Your song stays yours
We add no restrictions to the file we hand back. Songs made on RaoMusic keep the license they already had.
Clearer and wider, same song
Where AI repair helps, and where mastering is enough
All three start from a finished recording. What separates them is whether they only reshape what is still in the file or generate new detail.
| RaoMusic | Online mastering | EQ and repair plugins | |
|---|---|---|---|
| Brings back highs lost to compression | Yes, regenerated by AI | No, only lifts what is left | Only harmonic synthesis or spectral patching |
| Builds a stereo image from a mono file | Yes, a newly generated stereo image | No | Pseudo-stereo widening only |
| Leaves the performance exactly as recorded | Timing yes, tone shifts a little | Yes | Yes |
| Skill needed | Pick a strength | Pick a preset | Manual tuning and trained ears |
| Time per song | About 2 minutes | About a minute | 30 minutes and up |
Brings back highs lost to compression
- RaoMusic:Yes, regenerated by AI
- Online mastering:No, only lifts what is left
- EQ and repair plugins:Only harmonic synthesis or spectral patching
Builds a stereo image from a mono file
- RaoMusic:Yes, a newly generated stereo image
- Online mastering:No
- EQ and repair plugins:Pseudo-stereo widening only
Leaves the performance exactly as recorded
- RaoMusic:Timing yes, tone shifts a little
- Online mastering:Yes
- EQ and repair plugins:Yes
Skill needed
- RaoMusic:Pick a strength
- Online mastering:Pick a preset
- EQ and repair plugins:Manual tuning and trained ears
Time per song
- RaoMusic:About 2 minutes
- Online mastering:About a minute
- EQ and repair plugins:30 minutes and up
How to improve a song's audio quality
Three steps, about two minutes.
- 1
Add the song
Upload an audio file up to 8 minutes, or pick one from your library.
- 2
Choose a strength
Medium suits most files. Light stays closest to the original, Strong is for badly damaged audio. All three cost the same.
- 3
Compare, then download
Two versions land in your library. Play them against the original and keep the one you like.
When this is the right tool
It writes back detail that is no longer in the file. That helps in some situations and gets in the way in others.
Good fit
- ✓Old MP3s saved at 64–128 kbps that sound dull or muffled
- ✓Audio pulled out of a video or a messaging app, often mono and heavily compressed
- ✓Demos and AI songs that sound thin at the top end
Poor fit
- !Clean recordings you want left alone, since regenerating them can shift the timbre without adding anything
- !Release masters that have to match the recording note for note
- !Speech, podcasts and voice memos, since this is built for music
What actually happens to a compressed file
When a song is saved at a low bitrate, the encoder drops whatever it expects you not to miss. The top of the frequency range goes first, and that is where cymbals, breath and the air around a voice live. At 32 kbps there is often nothing left above 8 kHz, and at rates that low the two channels are usually collapsed into one to save more space. Turning the file up does not bring any of it back, because it is no longer in the file.
A mastering tool works with what survived: it balances the levels, shapes the tone and raises the loudness. That is the right job when the recording is intact. On a heavily compressed file it can only make a dull track louder, since there are no highs left to lift.
Improve Audio Quality takes a different route. The model listens to the whole song and writes the missing detail back in, then returns a full-length version with the original timing. In our test the file went from 32 kbps mono with nothing above about 8 kHz to 48 kHz stereo with content up to about 20 kHz. That detail is newly written rather than recovered, so the voice and the instruments can sound a little different from the master you remember. For a demo, a reference or a file you no longer have the original of, that trade is usually worth making. For a release master, start from the best source you can find.
Improving audio quality: common questions
20 credits per run, and one run gives you two versions. Free accounts get 50 credits a month, so you can use it without subscribing.
Common audio files such as MP3 and WAV, up to 8 minutes per song. You can also pick a song you already made on RaoMusic instead of uploading.
It writes detail that fits the song rather than recovering the original signal, so the result is not the old master restored. In our test a 32 kbps mono file came back as 48 kHz stereo with content up to about 20 kHz and the same timing. Play both before you publish.
The timing, arrangement and structure stay the same; in our test the level envelope lined up with the source with no time offset. Tone and texture shift a little because the detail is regenerated, which is easiest to hear on vocals. Light strength stays closest to the original.
Medium for most files. Light when the source is already decent and you only want a lift. Strong when the file is badly damaged and medium left it dull.
MP3, free on every plan. Members can also download the WAV for 4 credits per song.
No. The two versions arrive as new songs in your library, and the file you started from is left as it is.
We put no restrictions on the file we hand back, so it comes down to the original recording. If you own it, or it was made on RaoMusic, you can use the repaired version the same way. Repairing someone else's song does not give you any rights to it.
No. Mastering balances and loudens the mix you already have. This writes back detail the file no longer contains. If your mix is clean and you want it louder and more even, a mastering tool fits better.
On a result from this tool, no. A second pass moves further from the original without adding real detail, so the option is turned off on repaired versions. You can still run it again on the original file at a different strength.
Those tools are trained on speech, so they treat drums, guitars and reverb as noise and strip them out. This one is built for music: it keeps the whole arrangement and regenerates the detail the file lost. Use a voice tool for podcasts and interviews, and this one for songs.
Make your song sound clearer
Upload a file or pick a song, choose a strength, and get two repaired versions. Sign in to get started.