What an audio enhancer fixes
Most recordings made outside a studio share the same three problems. There is noise in the background, there is low rumble from handling, wind or traffic, and the level is too quiet or uneven compared with other videos and podcasts. Fixing each of these by hand takes several plugins and some experience. This audio enhancer does all three in one step and lets you hear the result against the original before you download it.
The core of the audio enhancer is DeepFilterNet3, an open AI model for speech enhancement, released under the MIT and Apache 2.0 licences. It runs in your browser in WebAssembly, so it works without a graphics card on almost any computer, and the file never leaves your device.
How the audio enhancer works
1. AI noise reduction
The model analyses the recording in short frames and removes everything it recognises as noise: hiss, hum, fans, traffic, wind, room tone and clicks. The voice is kept and its tone is preserved. A strength slider lets you leave a little ambience in if a completely silent background sounds unnatural.
2. Rumble filter
A steep high-pass filter at 80 Hz removes energy below the range of the human voice: handling noise, desk thumps, footsteps, wind rumble and mains hum. It also gives the loudness step more headroom.
3. Loudness levelling
The audio enhancer measures the integrated loudness of the result with the ITU-R BS.1770 method used by broadcasters and streaming platforms, then adjusts it to -16 LUFS. A peak limiter keeps the loudest moments under -1 dBFS, so the file does not distort on any player.
How to enhance audio
- Drop a voice recording (MP3, WAV, M4A, FLAC, OGG) or a video (MP4, MOV, WebM) into the box above.
- Wait while the audio enhancer processes it. The first time, the 17 MB model downloads once.
- Press play and switch between Original and Enhanced.
- Fine-tune the strength and steps if you like, then download the enhanced WAV or the video with enhanced audio.
Good uses for an audio enhancer
- Podcasts and interviews: get guests recorded in different rooms to a similar, clean sound and level.
- YouTube, TikTok and course videos: clean up camera or phone audio before you edit.
- Voice-overs and narration: remove room noise from home recordings.
- Meetings, lectures and webinars: make long recordings easier to listen to and to transcribe.
- Voice notes and old tapes: rescue recordings that are quiet and noisy.
Tips for the best enhanced audio
- Record as close to the speaker as possible. An audio enhancer can remove noise, but it cannot bring back detail that was never captured.
- Avoid clipping. If the original is distorted because it was recorded too loud, the distortion stays. Record a little quieter and let the enhancer level it.
- Use partial noise reduction for video. 70 to 90 % keeps a natural room feel under the voice.
- Music in the background? Remove it first with the background music remover, then enhance the voice.
Audio enhancer vs noise remover
| Step | Audio enhancer (this page) | Noise remover |
|---|---|---|
| AI noise reduction | On | On |
| Rumble filter (80 Hz) | On | Off, can be enabled |
| Loudness levelling (-16 LUFS) | On | Off, can be enabled |
Both pages use the same engine; they only start with different settings.
Free, private and fast
Your files are processed locally and never uploaded. There is no sign-up, no watermark and no file limit beyond 20 minutes per recording. A typical ten-minute recording is enhanced in under a minute on a modern laptop, in Chrome, Edge, Firefox or Safari.