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Speex to AU - Online Audio Converter
Convert Speex to AU online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert Speex to AU
Drop Speex audio here or click to select
Speex, OGG
AU (PCM 16-bit)
About Speex to AU
Convert Speex to AU. Speex compresses speech at telecom bitrates for voice apps. AU is Sun's simple container, usually holding 8 kHz telephony audio. Headers are minimal; verify sample rate after conversion..
Why convert Speex to AU?
- Larger files than lossy shares with AU uncompressed quality.
- Keep quality where supported.
- Private, no upload - runs in your browser.
Speex vs AU
| Codec | Speex | PCM 16-bit |
|---|---|---|
| Compression | lossy | uncompressed |
| Sample behavior | Quality set by bitrate | Full quality kept |
| Typical use | Speex compresses speech at telecom bitrates for voice apps. | AU is Sun's simple container, usually holding 8 kHz telephony audio. |
When not to convert Speex to AU
- Skip AU for the smallest share: lossless output stays large, so prefer a lossy target when sending Speex files.
- Keep a master copy: repeated exports stack small losses, so archive Speex before batch AU shares.
Limits
Starting point: Speex - Speex compresses speech at telecom bitrates for voice apps. Wideband modes confuse old tools; verify rate after conversion. Headers are minimal; verify sample rate after conversion. Encode AU (PCM 16-bit) from Speex 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 Speex to AU?
Drop your Speex file onto this page, choose quality and codec settings, then click Convert. The result downloads as AU instantly. All processing runs in your browser.
What codec is used for AU?
The default codec for AU is PCM 16-bit. 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.