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.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-herlein-speex-rtp-profile-00.txt
To remove yourself from the IETF Announcement list, send a message to
ietf-announce-request with the word unsubscribe in the body of the message.
Internet-Drafts are also available by anonymous FTP. Login with the username
"anonymous" and a password of your e-mail address. After logging in,
type "cd internet-drafts" and then
"get draft-herlein-speex-rtp-profile-00.txt".
A list of Internet-Drafts directories can be found in
http://www.ietf.org/shadow.html
or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
Internet-Drafts can also be obtained by e-mail.
Send a message to:
[EMAIL PROTECTED]
In the body type:
"FILE /internet-drafts/draft-herlein-speex-rtp-profile-00.txt".
NOTE: The mail server at ietf.org can return the document in
MIME-encoded form by using the "mpack" utility. To use this
feature, insert the command "ENCODING mime" before the "FILE"
command. To decode the response(s), you will need "munpack" or
a MIME-compliant mail reader. Different MIME-compliant mail readers
exhibit different behavior, especially when dealing with
"multipart" MIME messages (i.e. documents which have been split
up into multiple messages), so check your local documentation on
how to manipulate these messages.
Below is the data which will enable a MIME compliant mail reader
implementation to automatically retrieve the ASCII version of the
Internet-Draft.
- <ftp://ftp.ietf.org/internet-drafts/draft-herlein-speex-rtp-profile-00.txt>
-
