Absolutely private — everything runs right in your browser. Your audio files are never uploaded to any server.
Processing runs a real audio engine on your device — very long recordings (hours) are supported and will just take proportionally longer. If it feels slow, try closing other apps/tabs to free up your computer.
Add recordings
Drop files here or click to browse — you can add multiple recordings
Choose files
No recordings added yet
Result
No region selected yet
Drag on the waveform to mark a region, then click "Delete region" to remove it.
Noise reduction0%
Removes steady background noise (fan, hiss). Sudden noises (glass clinking, paper) can only be reduced, not fully removed.
Volume boost1.0×
Beyond this point audio quality may degrade (distortion/clipping) — a limiter is applied automatically, but very high boost can still sound harsh.