A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : RTP Payload Format for the Speex Codec
Author(s) : G. Herlein et al.
Filename : draft-herlein-speex-rtp-profile-00.txt
Pages : 8
Date : 2003-2-25
Speex is an open-source, patent-free voice codec suitable for use in
Voice over IP (VoIP) type applications. The Speex codec supports three
modes of operation: narrowband at a nominal 8kHz sample rate,
wideband at a nominal 16kHz sample rate, and ultra-wideband at a
nominal 32kHz sample rate. Speex supports Voice Activity Detection
(VAD) and Variable Bit Rate (VBR). This document describes the
payload format for Speex generated bit streams within an RTP packet.
Also included here are the necessary details for the use
of Speex with the Session Description Protocol (SDP) [4] and a preliminary method of using Speex within H.323 applications. Use of Speex with MIME will be covered as part of the Ogg Vorbis MIME definitions and is covered only minimally here.
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