Audio Remix
Change the tempo or pitch of any audio file without the artifacts that come from naive time-stretching. Upload a track, adjust the sliders, and download a clean result in seconds.
Drop your audio file here
or click to browse
Supports MP3, WAV, FLAC, M4A, OGG (max 20MB)Remix Settings
Stretch duration independently of tempo
Higher = sharper drums & percussion
How It Works
- Upload your audio track
- Describe the remix style
- Download remixed audio
Tips for Best Results
- Use high-quality source audio
- Be specific about remix style
- Shorter clips process faster
Why Choose Our AI Audio Remix
Independent Pitch and Tempo
Speed up or slow down a track without raising or lowering the pitch. Transpose pitch without changing playback speed. The two parameters are fully independent.
Semitone-Level Precision
Pitch is adjusted in semitone increments so you can transpose a song to match a vocalist's range or move a sample to a different key with predictable, musical results.
Transient Preservation
The RubberBand engine uses phase-locking and transient detection to keep drums, percussion, and attack-heavy sounds tight even at significant speed changes.
Broad Format Support
Upload MP3, WAV, FLAC, AAC, OGG, or M4A. The processed file is returned at a quality suitable for further production, streaming, or direct use in video projects.
Perfect For
Powered by Advanced AI
RubberBand Time-Stretching Engine
Audio Remix uses the RubberBand library, a phase-vocoder-based engine designed specifically for high-quality time-stretching and pitch-shifting. Unlike simpler resampling approaches, RubberBand analyzes the audio in frequency bands and shifts each independently, which keeps the timbre natural across a wide range of adjustments.
Transient detection marks the positions of drum hits, note attacks, and other sharp events. These markers are preserved precisely during stretching so rhythmic content stays tight. The result is clean even at tempo changes of 50% or more, which simpler tools handle poorly.
Frequently Asked Questions
Upload your audio file, set the tempo multiplier and pitch shift in semitones, then submit the job. The server processes the file using RubberBand and returns a modified version with the original duration scaled by your tempo factor and the pitch shifted by the number of semitones you specified.
MP3, WAV, FLAC, AAC, OGG, and M4A are all accepted. The engine handles stereo and mono, and various sample rates. Starting from a higher bit-rate source gives you more headroom in the output.
The upload limit covers full-length songs and most podcast episodes. Very long recordings with high sample rates produce large files that take longer to transfer and process, so splitting them at natural break points is practical if you hit slowdowns.
A typical 3-4 minute song processes in under a minute. Larger or longer files take proportionally more time. You will see a progress indicator while the job runs on the server.
Uploaded files are processed on the server to perform the time-stretch and pitch-shift operations, then the result is made available for you to download. Files are not shared with other users or used for model training. Refer to the platform privacy policy for full retention details.
RubberBand is widely used in professional DAWs and audio editors, so the output quality is in line with what those tools produce. At moderate stretch ratios (roughly 0.75x to 1.5x speed) artifacts are minimal. Larger changes produce more audible processing, which is a limitation of time-stretching in general rather than this tool specifically.
The tool modifies the tempo and pitch of your file and introduces no new intellectual property. Rights in the output follow from your rights in the source audio. Check the platform terms for the definitive statement on commercial use.
No. The two main controls are a tempo slider and a pitch-shift field. If you know you want a song 10% faster or down two semitones, you can make that adjustment without understanding audio engineering.
Dedicated DAWs give you more control, but they require installation, a license, and time to learn. Audio Remix handles the specific task of time-stretching and pitch-shifting in a browser with no setup, which is faster when that is the only thing you need to do.
One file per job. After downloading the result, reload the page and start the next file. If you need the same settings applied to many files, it is worth noting your tempo and pitch values so you can reapply them consistently.
Free AI Audio Remixer: Change Tempo, Key and Style Online vs Other Methods
| Feature | Luxoret AI | Manual / Traditional | Other Tools |
|---|---|---|---|
| Cost per Use | $0.33 | $100-$500+ studio session | $0.15-$0.50 per generation |
| Speed | Results in seconds | Hours in a studio | Minutes per track |
| Equipment | Just a browser | Professional studio gear | Desktop app required |
| Skill Required | None — fully automated | Audio engineering skills | Some learning curve |
| Quality | Professional AI output | Depends on engineer skill | Basic quality |
| Format Support | MP3, WAV, and more | Varies by studio | Common formats only |
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