Commit c7207386 authored by Jean-Marc Valin's avatar Jean-Marc Valin
Browse files

Adopted as WG item

parent 682d2900
......@@ -2,10 +2,10 @@
<!DOCTYPE rfc SYSTEM 'rfc2629.dtd'>
<?rfc toc="yes" symrefs="yes" ?>
<rfc ipr="trust200902" category="std" docName="draft-valin-codec-prototype-01">
<rfc ipr="trust200902" category="std" docName="draft-ietf-codec-description-00">
<front>
<title abbrev="Codec Prototype">Prototype for IETF Interactive Audio Codec</title>
<title abbrev="Interactive Audio Codec">Definition of the IETF Interactive Audio Codec</title>
<author initials="JM" surname="Valin" fullname="Jean-Marc Valin">
......@@ -39,7 +39,7 @@
</author>
<date day="8" month="July" year="2010" />
<date day="10" month="September" year="2010" />
<area>General</area>
......@@ -47,12 +47,8 @@
<abstract>
<t>
This document provides a quick overview of a prototype codec combining a linear
prediction layer (SILK) with an MDCT-based layer (CELT).
These codecs are
used because of the authors' familiarity with the source code, but it does
not prevent inclusion of code from other codecs as well. This is a
work in progress.
This document describes a codec designed for interactive speech and audio
transmission over the Internet.
</t>
</abstract>
</front>
......@@ -76,9 +72,7 @@ In this proposed prototype, the LP layer is based on the
<eref target='http://developer.skype.com/silk'>SILK</eref> codec
<xref target="SILK"></xref> and the MDCT layer is based on the
<eref target='http://www.celt-codec.org/'>CELT</eref> codec
<xref target="CELT"></xref>. These codecs are
used because of the authors' familiarity with the source code, but it does
not prevent inclusion of code from other codecs in the future.
<xref target="CELT"></xref>.
</t>
<t>This is a work in progress.</t>
......@@ -155,9 +149,9 @@ header.
<t>
The LP mode supports the following configurations (numbered from 00000...01011 in binary):
<list style="symbols">
<t>16 kHz: 10, 20, 40, 60 ms (00000...00011)</t>
<t>8 kHz: 10, 20, 40, 60 ms (00000...00011)</t>
<t>12 kHz: 10, 20, 40, 60 ms (00100...00111)</t>
<t>8 kHz: 10, 20, 40, 60 ms (01000...01011)</t>
<t>16 kHz: 10, 20, 40, 60 ms (01000...01011)</t>
</list>
for a total of 12 configurations.
</t>
......@@ -165,8 +159,8 @@ for a total of 12 configurations.
<t>
The hybrid mode supports the following configurations (numbered from 01100...01111):
<list style="symbols">
<t>48 kHz: 10, 20 ms (01100...01101)</t>
<t>32 kHz: 10, 20 ms (01110...01111)</t>
<t>32 kHz: 10, 20 ms (01100...01101)</t>
<t>48 kHz: 10, 20 ms (01110...01111)</t>
</list>
for a total of 4 configurations.
</t>
......@@ -174,10 +168,10 @@ for a total of 4 configurations.
<t>
The MDCT-only mode supports the following configurations (numbered from 10000...11101):
<list style="symbols">
<t>48 kHz: 2.5, 5, 10, 20 ms (10000...10011)</t>
<t>32 kHz: 2.5, 5, 10, 20 ms (10100...10111)</t>
<t>16 kHz: 2.5, 5, 10, 20 ms (11000...11011)</t>
<t>8 kHz: 2.5, 5, 10, 20 ms (11100...11111)</t>
<t>8 kHz: 2.5, 5, 10, 20 ms (10000...10011)</t>
<t>16 kHz: 2.5, 5, 10, 20 ms (10100...10111)</t>
<t>32 kHz: 2.5, 5, 10, 20 ms (11000...11011)</t>
<t>48 kHz: 2.5, 5, 10, 20 ms (11100...11111)</t>
</list>
for a total of 16 configurations.
</t>
......
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