How many bands are there?

Ten: 32, 64, 125, 250, 500 Hz and 1, 2, 4, 8, 16 kHz. That covers the audible range at useful resolution for casual shaping.

What do the presets do?

Voice boosts presence around 2–4 kHz and rolls off sub-bass. Music is a gentle smile curve. Bass lifts 60–125 Hz for headphones.

Not yet. For now, note the gain values — preset saving is on the roadmap.

EqualizerLocal

Shape your audio with a 10-band graphic equalizer. Pick a preset or drag the bands to cut and boost individual frequencies.

Drop an MP3 or WAV file here

or click to browse

⎆Your audio never leaves your browser. All EQ processing runs locally via the Web Audio API.

How to use Equalizer

Drop a file
An MP3 or WAV works best. The tool decodes it into an AudioBuffer.
Pick a preset or build your own
Start from Voice, Music, or Bass presets, or drag individual band sliders.
Preview
Audition the EQ'd output in the built-in player.
Export
Render to MP3 or WAV via OfflineAudioContext. Your file never leaves the browser.

Frequently asked questions

How many bands are there?: Ten: 32, 64, 125, 250, 500 Hz and 1, 2, 4, 8, 16 kHz. That covers the audible range at useful resolution for casual shaping.
What do the presets do?: Voice boosts presence around 2–4 kHz and rolls off sub-bass. Music is a gentle smile curve. Bass lifts 60–125 Hz for headphones.
Can I save my custom preset?: Not yet. For now, note the gain values — preset saving is on the roadmap.