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AMR to QCELP - Online Audio Converter
Convert AMR to QCELP online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert AMR to QCELP
Drop AMR audio here or click to select
AMR
QCELP (QCELP)
About AMR to QCELP
Convert AMR to QCELP. AMR encodes narrowband speech for GSM calls at 12.2 kbps and below. QCELP compresses CDMA voice near 8 kbps like EVRC. Carrier variants differ; check headers before converting..
Why convert AMR to QCELP?
- Smaller files with QCELP lossy compression.
- Keep quality where supported.
- Private, no upload - runs in your browser.
AMR vs QCELP
| Codec | AMR-NB | QCELP |
|---|---|---|
| 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. | QCELP compresses CDMA voice near 8 kbps like EVRC. |
When not to convert AMR to QCELP
- Skip QCELP 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 QCELP 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. Carrier variants differ; check headers before converting. Encode QCELP (QCELP) 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 QCELP?
Drop your AMR file onto this page, choose quality and codec settings, then click Convert. The result downloads as QCELP instantly. All processing runs in your browser.
What codec is used for QCELP?
The default codec for QCELP is QCELP. 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.