Free Background Noise Remover

1. Upload an AAC, AIFF, FLAC, M4A, MP3, OGG, or WAV file.
2. Leave the reduction strength at its default, or adjust it manually.
3. Run the denoiser.
4. Download the cleaned-up result.

The denoiser targets steady, consistent background noise — tape hiss, fan or AC hum, electrical buzz, static, and general microphone self-noise. It works by identifying frequencies where that kind of noise sits consistently and reducing energy there throughout the file. Noise that's intermittent or highly variable — like gusty wind, a door slamming, or a dog barking — is a harder problem for any denoiser, since there's no single steady frequency profile to target; strength adjustments can help partially, but this isn't a tool built to isolate one-off transient sounds.

If you're also planning to adjust the volume, denoise first — boosting volume before cleanup just raises the noise right along with everything else, giving the denoiser more to remove and a messier starting point than cleaning it up first would.

Podcasts and voice recordings with hiss or hum, interviews recorded on a phone or in an untreated room, music demos with audible tape or preamp noise, lecture recordings, and any audio pulled from a video call or field recorder where background hum crept in.

This is a general-purpose denoiser that works on any audio — music, field recordings, or speech — with a strength slider you control directly.

If your source is specifically speech (a podcast, phone recording, or interview), the Voice Cleaner runs a fixed chain tuned just for that — rumble cut, speech-optimized denoise, and loudness normalization in one pass — and will usually outperform manually tuning this tool for voice content.

Want the full explanation of how FFT-based denoising works and why pushing strength too high causes warbling? Read How to Remove Background Noise from Audio.