Noise Reduction
Reduce steady background noise with a simple spectral gate that runs entirely in the browser.
Drop a file here or browse
MP3, WAV, FLAC, M4A, OGG — processed locally, never uploaded
What it does
Noise Reduction attenuates bins that stay consistently quiet relative to the local spectrum — a classic spectral gating idea. It helps with steady hum, fan noise, and low-level hiss more than with sudden bangs or competing music.
This is not a neural denoiser like RNNoise. Aggressive settings can dull transients or thin the tone. Start mild, preview, then export when the balance feels acceptable.
All processing is local.
Where spectral gating helps most
Steady, predictable noise — a computer fan, room hum, air conditioning, light hiss from a cheap microphone — sits at a fairly constant level across the whole recording. The gate learns that floor and pulls it down while leaving louder, changing content like speech or music mostly intact. It is a lightweight cleanup step, not a substitute for recording in a quiet room in the first place.
What it will not fix
Overlapping music, crowd chatter, wind gusts, or clipping distortion are not steady noise floors, so this tool cannot separate them from the wanted signal. For those cases, try re-recording closer to the source, or use the Audio Compressor to tame uneven levels instead.
How to use it
Load a noisy clip
Upload the recording you want to clean. Steady noise floors respond best.
Choose strength
Low preserves more of the original; high removes more noise but may sound gated.
Preview and apply
Listen to the result, then download the processed WAV when ready.
Use before recognition
A cleaner clip can improve song matching when the original was buried in hiss.
Tip: Denoise in small steps and preview after each change. It is easier to catch a "gated" or hollow sound at 20% strength than after you have already exported at 80%.
Questions about Noise Reduction
01Will it remove other music in the background?+
Usually not well. It targets relatively steady noise, not a second full mix.
02Why does it sound underwater?+
Strength may be too high. Lower the amount and try again.
03Is this the same as the Advanced Options denoise?+
Same family of idea — local spectral processing for quick cleanup.
04Is my audio uploaded?+
No.
05Should I denoise before or after trimming?+
Trim first. Working on a shorter, representative section makes it easier to judge strength and avoids wasting processing time on parts you will discard anyway.