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AU to xHE-AAC - Online Audio Converter
Convert AU to xHE-AAC online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert AU to xHE-AAC
Drop AU audio here or click to select
AU
xHE-AAC (AAC (xHE))
About AU to xHE-AAC
Convert AU to xHE-AAC. AU is Sun's simple container, usually holding 8 kHz telephony audio. xHE-AAC unifies speech and music coding with loudness normalization. Needs a current decoder; fall back to AAC for older devices..
Why convert AU to xHE-AAC?
- Smaller files with xHE-AAC lossy compression.
- Keep quality where supported.
- Private, no upload - runs in your browser.
AU vs xHE-AAC
| Codec | PCM 16-bit | AAC (xHE) |
|---|---|---|
| Compression | uncompressed | lossy |
| Sample behavior | Full quality kept | Quality set by bitrate |
| Typical use | AU is Sun's simple container, usually holding 8 kHz telephony audio. | xHE-AAC unifies speech and music coding with loudness normalization. |
When not to convert AU to xHE-AAC
- Skip xHE-AAC for archival masters: lossy compression discards detail, so keep the AU original.
- Keep a master copy: repeated exports stack small losses, so archive AU before batch xHE-AAC shares.
Limits
Starting point: AU - AU is Sun's simple container, usually holding 8 kHz telephony audio. Headers are minimal; verify sample rate after conversion. Needs a current decoder; fall back to AAC for older devices. Encode xHE-AAC (AAC (xHE)) from AU at 256k for music or 128k for speech, starting from the master.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
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FAQ
How do I convert AU to xHE-AAC?
Drop your AU file onto this page, choose quality and codec settings, then click Convert. The result downloads as xHE-AAC instantly. All processing runs in your browser.
What codec is used for xHE-AAC?
The default codec for xHE-AAC is AAC (xHE). You can change audio parameters in Advanced mode.
How do you store my files?
We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.