Audio Equalizer
Select one browser-decodable mono or stereo audio file, adjust the bands, then render a preview and download.
Web Audio biquad filters process six bands: 60, 170, 350, 1000, 3500 and 10000 Hz. Output is a new 16-bit PCM WAV at the browser-decoded sample rate. Files stay on this device. Input is limited to 25 MB, two channels, five minutes and 15 million decoded samples; codec support depends on the browser. This is frequency shaping, not loudness normalization. Boosts can exceed full scale; reduce gain if the tool reports clipping.
Cancel discards the result and stops the filter graph. Native browser decoding or rendering may finish in the background; new processing stays disabled until it settles.
Select an audio file. No upload or microphone permission is needed.
A QUICK WALKTHROUGH
How to use this tool
- Select an audio file up to 25 MB.
- Adjust six bands from −12 to +12 dB and render the result.
- Listen to the processed audio and download WAV.
Local processing and output
Web Audio biquad filters process six bands: 60, 170, 350, 1000, 3500 and 10000 Hz. Output is a new 16-bit PCM WAV at the browser-decoded sample rate. Files stay on this device. Input is limited to 25 MB, two channels, five minutes and 15 million decoded samples; codec support depends on the browser. This is frequency shaping, not loudness normalization. Boosts can exceed full scale; reduce gain if the tool reports clipping.
GOOD TO KNOW
Common questions
Are previews updated when I change a band?
Render again after each change. The previous result is cleared when settings change, so the downloaded WAV always matches the visible settings.