Remove noise from audio
Free, with no limits and no watermark. Everything runs inside your browser — your file is never uploaded.
One-time setup
This loads the part that tells speech from noise (about 11MB). It happens once; after that everything runs on your own device. You can disconnect from the network and it will still work.
Reading…
This file
Output settings
Keep this page open. Switching to another app will stop it.
What this tool does well
- Nothing is uploaded. Meetings, interviews and one-to-one recordings are exactly the files you would rather not hand to a stranger — and exactly the ones worth cleaning up. This tool never sends them anywhere.
- It is good at steady noise. Air conditioning, fans, extractor hums and the hiss of a cheap microphone become plainly quieter.
- Nothing is cut short to push you towards a paid tier, and nothing is stamped on the result. The working limit is about 35 minutes in mono or 17 in stereo, set by browser memory.
- You can A/B it on the spot. Switching keeps your place in the recording, so the difference is easy to hear.
- No install, no account.
How to use it
- Press “Get ready”. This loads the part that tells speech from noise, once.
- Drag an audio file in, or click to choose one.
- Press “Remove the noise”, listen to the result, then download it.
Questions
Is my audio uploaded?
No. Everything happens inside your browser, and this site has no way of receiving an audio file in the first place.
Can I check that for myself?
Yes. Once “Get ready” has finished, disconnect from the internet. You can still choose a file and export the result with the connection off.
The connection is only needed for “Get ready” — and again if you reload the page.
Why do I have to press “Get ready” first?
The part that tells speech from noise is about 11MB, and nothing can be processed without it. Downloading that silently would be unfair to anyone watching their data allowance, sonothing is fetched until you ask for it.
Once loaded, you do not need to press it again while the page stays open.
Which kinds of noise does it handle?
Handled well
- Air conditioning, extractor fans and computer fans — anything steady and low
- The hiss of a cheap microphone or a phone recording
- Mains hum
Not its strength
- Other people talking. Café chatter and the conversation at the next desk can only be reduced by also thinning the voice you want. This is a hard problem, and the tool does not solve it.
- Music. The model is built to keep speech, so singing and instruments can be damaged.
Will it change the voice as well?
With quiet background noise, barely at all. But when the noise is louder than the speech, some of the voice goes with it. Compare against the original before you export.
How long does it take?
On a computer, about a fifth of the length of the recording — roughly 2 minutes for a 10-minute file. Stereo is processed one channel at a time, so it takes twice as long; for a voice-only recording, “Mix down to mono” halves it again.
How long a recording can it take?
About 35 minutes in mono, or 17 minutes in stereo. The limit comes from how much memory a browser can hold at once. For anything longer, split it first withTrim audio.
The result is slightly shorter than the original
The first 0.03 seconds is trimmed. That is inherent to the processing, it is not audible, and it is not enough to throw a recording out of sync with video.
Does the quality drop?
Not noticeably from the noise removal itself. Choosing a compressed format such as MP3 will cost you some quality, as it always does — pick WAV or FLAC if that matters.
The result is written at 48kHz, even if the original was 44.1kHz.
I want to clean up the sound of a video
Pull the audio out first withExtract audio, then clean it up here.
My recording is also too quiet
Clean it up here first, then use Fix the volume. Removing the noise first gives the volume step more room to work with.
What is free, and what is limited?
Every feature, as often as you like. There is no daily cap, no account tier, and no charge later on.
There are limits on length and file size, but they come fromwhat a browser can hold at once. The work happens on your own device, so there is no reason for us to meter it.
Does it work on a phone?
It does, with a few caveats.
- Use a computer for long recordings. This processing needs a lot of memory, and some phones will stop part-way.
- Keep this page open while it works. Switching to another app will stop it.
- “Get ready” downloads about 11MB. Use Wi-Fi if your data allowance matters.
- Some formats cannot be produced on iPhone (Opus, for one). Pick another if it fails.
- Downloads land in the Files app. To put one in Photos instead, use “Share or save” next to the download button.
How does it work?
It uses DeepFilterNet3, a model trained to separate speech from noise, by Hendrik Schröter and contributors, published under Apache-2.0 / MIT. Seethe licences page for details.