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AMR to AC3 - Online Audio Converter
Convert AMR to AC3 online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert AMR to AC3
Drop AMR audio here or click to select
AMR
AC3 (AC-3)
About AMR to AC3
Convert AMR to AC3. AMR encodes narrowband speech for GSM calls at 12.2 kbps and below. AC3 (Dolby Digital) carries 5.1 surround on DVDs and broadcasts. Downmix choices change loudness; check levels after conversion..
Why convert AMR to AC3?
- Smaller files with AC3 lossy compression.
- Keep quality where supported.
- Private, no upload - runs in your browser.
AMR vs AC3
| Codec | AMR-NB | AC-3 |
|---|---|---|
| Compression | lossy | lossy |
| Sample behavior | Quality set by bitrate | Quality set by bitrate |
| Typical use | AMR encodes narrowband speech for GSM calls at 12.2 kbps and below. | AC3 (Dolby Digital) carries 5.1 surround on DVDs and broadcasts. |
When not to convert AMR to AC3
- Skip AC3 for archival masters: lossy compression discards detail, so keep the AMR original.
- Keep a master copy: repeated exports stack small losses, so archive AMR before batch AC3 shares.
Limits
Starting point: AMR - AMR encodes narrowband speech for GSM calls at 12.2 kbps and below. Tuned for voice calls, so music loses detail by design. Downmix choices change loudness; check levels after conversion. Encode AC3 (AC-3) from AMR 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 AMR to AC3?
Drop your AMR file onto this page, choose quality and codec settings, then click Convert. The result downloads as AC3 instantly. All processing runs in your browser.
What codec is used for AC3?
The default codec for AC3 is AC-3. 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.