Remove Background Noise from Audio
100% private — runs on your device, never uploaded. Works offline once loaded.
Most bad audio is not badly spoken, it is badly surrounded: a fan, a laptop, traffic through a window, the hiss of a cheap microphone, or the mains hum that creeps in from unshielded cabling. This runs the clean-up chain a producer would: a high-pass filter to drop rumble below the voice, spectral noise reduction to pull out steady background noise, notch filters for mains hum at 50 Hz or 60 Hz and its harmonics, and finally loudness normalisation so the cleaned-up voice sits at a consistent level. Strong settings can leave speech sounding processed and underwater, so start at medium — the aim is a voice that is easy to listen to, not a vacuum.
Frequently asked questions
Why does strong noise reduction sound watery?
Spectral noise reduction removes frequencies it judges to be noise. Push it hard and it takes parts of the voice with it, leaving the metallic, underwater artefacts you have heard on bad conference calls. Medium is usually the right trade.
Should I pick 50 Hz or 60 Hz hum?
50 Hz in Europe, Asia, Africa and Australia; 60 Hz in the Americas and Japan. It matches your mains supply. Leave it off unless you can hear a steady low buzz.
Can it remove someone talking in the background?
No. It removes steady, continuous noise. Another voice changes constantly, which is exactly what the filter is built to keep.
Is my recording uploaded?
No — it is cleaned on your device, which matters for confidential interviews.
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