# Audio Equalizer

Load an audio file and shape it with ten bands from 31 Hz to 16 kHz. Four presets and a bypass switch make the change audible, and the result exports as a WAV file.

> Canonical: https://aimusicis.com/audio-equalizer

## A ten-band audio equalizer that exports what you hear

An equalizer is a set of decisions about which frequencies deserve more room. This one gives ten bands, one decibel slider each, and a bypass switch so the decision can be checked against the untouched file before anything is saved.

### Ten bands from 31 Hz to 16 kHz

Each band is a biquad filter: a low shelf at 31 Hz, a high shelf at 16 kHz, and eight peaking filters about an octave wide in between.

### Bypass compares dry and shaped

The bypass switch routes the file straight to the output, so the difference between the equalized and original sound is one press apart.

### Export WAV

The equalized file is rendered offline through the same ten bands and saved as a WAV, so the export matches the current settings rather than a preview.

## Shape a track in three steps

### Load an audio file

Drop a file or choose one from your device. It is decoded in the browser; nothing is uploaded.

### Set the bands or pick a preset

Each slider covers -12 dB to +12 dB. Start from Flat, Bass, Vocal or Bright, then adjust the bands that need it.

### Compare, then export

Use bypass to hear the original, then export a WAV rendered through the same ten bands at the current gains.

## Bands, range and output

### 10 bands

31, 62, 125, 250, 500, 1000, 2000, 4000, 8000 and 16000 Hz. The two ends are shelves; the eight in between are peaking filters.

### -12 dB to +12 dB

The gain range of every band, in one decibel steps, which is enough to lift a dull recording or pull down a boom without wrecking it.

### 4 presets

Flat, Bass, Vocal and Bright are one press away, and any band can then be moved from that starting point.

### 6 audio formats in, WAV out

MP3, WAV, OGG, M4A, AAC and FLAC in, up to 90 MB and 15 minutes. The export is a 16-bit PCM WAV file.

## Who reaches for an equalizer

### Podcasters and voice-over artists

Pull the rumble below 125 Hz, lift the presence band around 1 kHz, and the same take sounds closer and clearer.

### Producers fixing a rough mix

Cut a build-up in one band, add air on the top shelf, and export a WAV to check on another system.

### Anyone tidying a recording

An old or muffled file can be made more usable with a gentle low cut and a modest lift at the top, without a full editor.

## Tools related to Audio Equalizer

### [AI Music Editor](https://aimusicis.com/ai-music-editor)

### [Noise Generator](https://aimusicis.com/noise-generator)

### [Audio Pitch Changer](https://aimusicis.com/audio-pitch-changer)

### [Slowed and Reverb Generator](https://aimusicis.com/slowed-and-reverb-generator)

## Audio Equalizer FAQ

### How many bands does the Audio Equalizer have?

The Audio Equalizer has ten bands, centred at 31, 62, 125, 250, 500, 1000, 2000, 4000, 8000 and 16000 Hz. Each one has its own gain slider, so the adjustment is a curve rather than a single tone control.

### What does the bypass switch do in the Audio Equalizer?

Bypass routes the file straight to the output without the ten filters, so the Audio Equalizer plays the untouched audio. Switching it on and off is the quickest way to check whether a band change helped.

### What file format does the Audio Equalizer export?

The Audio Equalizer exports 16-bit PCM WAV. It does not export MP3, because no MP3 encoder is used in the browser page; WAV keeps the result lossless, and the exported file carries the current ten band gains.

### Does the Audio Equalizer upload my audio?

No. The Audio Equalizer decodes and filters the file in the browser with the Web Audio API. Nothing is sent to a server, and no account or credits are needed for playback or export.

### Is the exported WAV the same as what I heard?

The export is rendered through the same ten bands at the same gains, offline, so the tone matches the preview. The volume slider is a monitoring control and is not applied to the export, so the saved file is not turned down by it.

### Why does a boosted band sound distorted?

Boosting several neighbouring bands at once can push the signal past full scale, and a digital file has no headroom above it. The Audio Equalizer applies the gains you set, so it helps to boost one band rather than four, and to pull down a problem band instead of lifting everything around it.

### Which audio formats can the Audio Equalizer open?

The Audio Equalizer accepts MP3, WAV, OGG, M4A, AAC and FLAC where the browser can decode them, up to 90 MB and 15 minutes. A format the browser cannot decode reports an error instead of failing silently.

### What are the limits of the Audio Equalizer?

The Audio Equalizer works on one file at a time, in the browser, and exports 16-bit WAV only. It cannot restore detail that a compressed source has already lost, its ten bands are fixed rather than free-form, and a browser that cannot decode the file reports an error instead of producing a result.

### How many credits does Audio Equalizer use?

Audio Equalizer runs in the browser and draws zero credits.

## Check the equalized file on another system

Export the WAV, then compare it with a master that has been shaped for loudness on every speaker.

_Last updated August 28, 2026_