Noise Removal turns down the steady background noise in a recording — the hiss of a cheap microphone, the rush of a fan or an air conditioner — so a voice memo, lecture or interview is easier to listen to.
It is a classic spectral noise filter (ffmpeg's FFT denoiser) running in your browser, not a cloud AI model, so the recording is not uploaded. That also sets its limits: it works on constant noise and leaves sudden sounds — traffic, a door, other people talking, background music — largely untouched. There are no settings; the strength is fixed at a moderate level. It needs a free account and uses 1 credit per run.
How to use
Sign in and choose the recording — MP3, M4A, WAV and other common formats work.
Run the filter; there is nothing to set, the noise is lowered by a fixed, moderate amount.
Compare the cleaned version with the original in the page, then download the MP3.
FAQ
What kind of noise does it remove?
Steady, even noise: microphone hiss, tape hiss, the rush of a fan or air conditioning. It cannot separate a voice from traffic, music, other speakers or sudden knocks — that needs a speech-isolation model, which this tool is not.
Will it fix mains hum or echo?
Hum only partly, echo not at all. The filter treats noise as an even layer across all frequencies, so a low, tonal hum from a power line or a bad cable often stays audible, and room echo is not touched.
Is my recording uploaded?
No. The filter runs inside your browser with ffmpeg, and the cleaned file is written there too. You need to be signed in to use it, but the audio itself stays on your device.
What do I get back?
An MP3 of the whole recording with the noise turned down. If the voice starts to sound thin or watery, the original was very noisy — no filter can rebuild what the noise covered.