Loading Shrinkify...
Loading Shrinkify...
Reduce background noise from audio recordings. Clean up podcasts, interviews, and voice recordings locally.
Upload Files
Drag & drop files here, or click to select
Drag & drop audio files here
Supported: MP3, WAV, AAC, OGG, FLAC, WMA, M4R • Max recommended: 200MB
Background noise is often inaudible during recording but becomes glaring in the final mix. The Noise Reduction tool uses spectral subtraction to identify the noise floor — HVAC hum, mic hiss, wind, keyboard clicks — and suppress it without degrading the foreground signal.
Apply noise reduction as the first step — before EQ, compression, or volume changes. Cleaning the source first preserves more useful signal for every downstream process.
After denoising, use Audio Equalizer to restore any high-frequency presence that was reduced during noise suppression.
The tool samples a background-only segment to model the noise floor's spectral profile, then subtracts that profile from the full recording frame by frame — preserving foreground signal while attenuating the persistent noise.
Spectral subtraction works best on steady, consistent noise like hiss, hum, or static. Non-stationary sources like background music or overlapping speech are much harder to separate without damaging the primary signal.
Aggressive settings produce an artifact called musical noise. Start with a conservative reduction level and increase gradually until the noise is acceptable without reducing speech clarity.
Check out our technical guides to learn more about how browser-side processing works.
Read Glossary