speex: speex is a patent-free audio compression format designed for speech speex: speex: The Speex Project aims to lower the barrier of entry for voice speex: applications by providing a free alternative to expensive speex: proprietary speech codecs. Moreover, Speex is well-adapted to speex: Internet applications and provides useful features that are not speex: present in most other codecs. Speex is based on CELP and is speex: designed to compress voice at bitrates ranging from 2 to 44 kbps. speex: speex: speex: