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QCP to HE-AAC - Online Audio Converter
Convert QCP to HE-AAC online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert QCP to HE-AAC
Drop QCP audio here or click to select
QCP
HE-AAC (AAC (HE))
About QCP to HE-AAC
Convert QCP to HE-AAC. QCP wraps QCELP voice memos from CDMA handsets. HE-AAC adds spectral band replication for efficient low-bitrate streaming. Needs an HE-AAC decoder; plain AAC players may play only half the bandwidth..
Why convert QCP to HE-AAC?
- Smaller files with HE-AAC lossy compression.
- Keep quality where supported.
- Private, no upload - runs in your browser.
QCP vs HE-AAC
| Codec | QCP | AAC (HE) |
|---|---|---|
| Compression | lossy | lossy |
| Sample behavior | Quality set by bitrate | Quality set by bitrate |
| Typical use | QCP wraps QCELP voice memos from CDMA handsets. | HE-AAC adds spectral band replication for efficient low-bitrate streaming. |
When not to convert QCP to HE-AAC
- Skip HE-AAC for archival masters: lossy compression discards detail, so keep the QCP original.
- Keep a master copy: repeated exports stack small losses, so archive QCP before batch HE-AAC shares.
Limits
Starting point: QCP - QCP wraps QCELP voice memos from CDMA handsets. Same payload as QCELP under the handset file name. Needs an HE-AAC decoder; plain AAC players may play only half the bandwidth. Encode HE-AAC (AAC (HE)) from QCP 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 QCP to HE-AAC?
Drop your QCP file onto this page, choose quality and codec settings, then click Convert. The result downloads as HE-AAC instantly. All processing runs in your browser.
What codec is used for HE-AAC?
The default codec for HE-AAC is AAC (HE). 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.