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authorJean-Marc Valin <jean-marc.valin@octasic.com>2010-09-11 01:03:42 +0400
committerJean-Marc Valin <jean-marc.valin@octasic.com>2010-09-11 01:03:42 +0400
commitc72073864f7a82d1744d943626ed9b8260ae47d7 (patch)
tree5e5c0d18520142a4301e2ee194dfe787b2dedd23 /doc
parent682d2900f6c76b2cb43cf6d18c722b8f9aed3b01 (diff)
Adopted as WG item
Diffstat (limited to 'doc')
-rw-r--r--doc/draft-ietf-codec-description.xml (renamed from doc/draft-valin-codec-prototype.xml)34
1 files changed, 14 insertions, 20 deletions
diff --git a/doc/draft-valin-codec-prototype.xml b/doc/draft-ietf-codec-description.xml
index c594eb40..27203810 100644
--- a/doc/draft-valin-codec-prototype.xml
+++ b/doc/draft-ietf-codec-description.xml
@@ -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>