Speex

File Format
Name	Speex
Ontology	Electronic File Formats Audio and Music Speex
Extension(s)	.spx

Description

Speex is an open-source audio compression format designed for speech. While the Speex codec and source is still available, it has been obsoleted by the Opus codec.

Information

• The Speex Codec Manual Version 1.2 Beta 3
• Speex Reference Manual 1.2-beta2
• RFC 5574 - RTP Payload Format for the Speex Codec
• Speex source

Software

The latest source and binary releases of Speex are available here.

Software supporting Speex can be found here.

Links

• Speex samples (decoded back to WAV format)
• A sample .spx file can be found here