A voice memo recorded near a fan, a podcast take with room hiss, or an interview with traffic behind it — the voice is fine, the background is not. This free audio noise reducer quiets steady background noise such as hiss, hum, and fan drone while leaving the voice itself alone, so a muddy recording becomes listenable. Everything runs in your browser, so your recording is never uploaded and no signup is needed. Be clear about the limit: this is a light browser noise gate and filter, not studio denoise or AI voice separation — it cannot remove loud, changing noise or untangle two people talking over each other.
How to use this audio noise reducer
Drop a noisy recording, set the strength, download the cleaner take.
Drop in an MP3, WAV, or other common audio file. Your original is never changed.
Start gentle and raise the strength only as far as needed — stronger reduction removes more noise but can also thin the voice.
Listen to the cleaned version against the original, then download the result as a new file.
Why this audio noise reducer starts gentle and stays honest
Aggressive noise removal that eats the voice is worse than the noise it removed.
Constant hiss, electrical hum, and fan drone are the easiest to reduce, because they sound the same from second to second.
Quiet parts between words are lowered while the voice itself is left as close to untouched as a light browser filter allows.
A slider from mild to strong lets you trade noise removal against voice quality, instead of a one-button result you cannot adjust.
The recording is cleaned on your own device, so interviews and personal voice notes never leave your browser.
Audio Noise Reducer FAQs
Short, direct answers to the questions readers ask most.
Steady background noise — hiss, hum, fan drone, and constant room tone — responds best. Loud, changing sounds like traffic bursts or café chatter are much harder for a light filter, and may only be reduced, not removed.
At gentle to moderate strength, the voice should stay natural. At very strong settings a light gate can thin the voice or clip the start of words, so preview and back the strength off if that happens.
No. A noise reducer lowers background sound; it cannot untangle overlapping voices. For that you would need a dedicated voice-separation tool, not a filter.
Only cautiously. A noise gate tuned for speech can dull quiet instruments and room ambience in music, so preview carefully and keep the strength low on musical recordings.
Yes. It runs entirely in your browser — no account, no signup, and nothing uploaded.
Related Tools
More free converters that work the same way — right in your browser.
Record voice audio in your browser, with no install and no signup.
Audio NormalizerEven out an audio file’s loudness so quiet parts are easier to hear.
Volume BoosterRaise the volume of a quiet audio file in your browser.
Silence TrimmerCut leading and trailing silence from an audio file in your browser.
Try the related tools above, or go back to the Convertion homepage for more free converters.
