Speex to QCELP - Online Audio Converter

Convert Speex to QCELP online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.

Convert Speex to QCELP

[+] Drop Speex audio here or click to select Speex, OGG

Output format

QCELP (QCELP)

Mode[i]

Simple Advanced

Quality[i]

Sample Rate[i]

Channels[i]

About Speex to QCELP

Convert Speex to QCELP. Speex compresses speech at telecom bitrates for voice apps. QCELP compresses CDMA voice near 8 kbps like EVRC. Carrier variants differ; check headers before converting..

Why convert Speex to QCELP?

Smaller files with QCELP lossy compression.
Keep quality where supported.
Private, no upload - runs in your browser.

Speex vs QCELP

Codec	Speex	QCELP
Compression	lossy	lossy
Sample behavior	Quality set by bitrate	Quality set by bitrate
Typical use	Speex compresses speech at telecom bitrates for voice apps.	QCELP compresses CDMA voice near 8 kbps like EVRC.

When not to convert Speex to QCELP

Skip QCELP for archival masters: lossy compression discards detail, so keep the Speex original.
Keep a master copy: repeated exports stack small losses, so archive Speex before batch QCELP shares.

Limits

Starting point: Speex - Speex compresses speech at telecom bitrates for voice apps. Wideband modes confuse old tools; verify rate after conversion. Carrier variants differ; check headers before converting. Encode QCELP (QCELP) 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 QCELP?

Drop your Speex 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.