Voice Noise Remover (Free)
Reduce background noise in meeting, lecture and YouTube recordings. Switch between the original and the cleaned version and adjust the strength.
- Only upload files you have the right to use. Copying or sharing other people's music, videos or recordings without permission can violate copyright law. FreeSoundTools does not store your files on a server.
- Don't upload secret recordings of conversations you were not part of. Recording other people without consent can be illegal.
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When you can't fully control where you record, an AI noise reduction tool can cut background noise such as wind or hum from a recording you already have.
When to use it
- Clean up a phone recording with wind or fan noise
- Tidy up a call recording with keyboard typing or humming in the background
- Reduce noise in a meeting recording before transcribing it, for better recognition
- Reduce background noise before uploading to YouTube or a podcast
- Clean up speech with constant noise underneath, such as air conditioning or street noise
How to use
- Set the strength slider (0 to 100%) first. The default is 100%.
- Add your recording. mp3 · wav · m4a · mp4 and more are supported.
- The audio is converted to 48 kHz and the AI (RNNoise) reduces the noise. You'll see the progress and the share of the audio that contains speech.
- Compare with "Play original" and "Play cleaned", and adjust the strength while you listen.
- Save as WAV or MP3 (192 kbps).
Supported formats and limits
- Input: mp3 · wav · m4a · mp4 · webm and other audio or video files with human speech
- Processing runs at 48 kHz, and files are saved at 48 kHz
- Output: WAV (16-bit) or MP3 (192 kbps)
- Strength can be set from 0 to 100%. It is the mix ratio between the original and the noise-reduced result
- Runs the RNNoise AI model (BSD-3-Clause license) inside your browser
Tips
- This tool is tuned to reduce noise around human speech (wind, fans, keyboards, hum). It isn't suited to music and can cut instrument sounds.
- Lowering the strength from 100% mixes in more of the original, which can make it sound less artificial. Starting at 70 to 90% is a good idea.
- Speech recognition tends to work better on a recording that has been denoised first.
- Speech that was recorded too quietly won't become clear from noise reduction alone.
Troubleshooting
- If the result sounds robotic, lower the strength and try again.
- If instruments sound smeared after processing a music file, that's because this tool is made for voice, not music. We recommend not using it on music.
- Processing time grows with the length of the file. That's normal, so watch the progress bar and wait.
- If the noise sounds almost unchanged, check whether the strength slider is set low and try again at 100%.
FAQ
Can I use it on music?
We don't recommend it. The AI is tuned for human voices, so on music it can cut or distort instruments.
Will the recording be completely clean?
It reduces noise considerably but can't remove it entirely. Very loud noise, or other people talking in the background, is hard to remove.
How do I choose the strength?
Set it anywhere from 0 to 100% with the slider. Higher values remove more noise but can make the voice sound unnatural, so compare with the original to find the right value.
Does the file stay on a server after processing?
No. All processing happens in your browser and nothing is stored on a server.
Learn more
For more detail, see the guides: How to Reduce Noise in Recordings (Before and After) and Vocal Remover: What Actually Works and Its Limits.