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Tim-Philipp Müller
Opus
Commits
4e777532
Commit
4e777532
authored
Oct 15, 2010
by
Jean-Marc Valin
Browse files
Renamed to Opus
And updated CELT
parent
38f4e9ff
Changes
2
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Inline
Side-by-side
celt
@
4d2d9fc9
Subproject commit
8226ac083ea19f57b69e863251fe487228bc2925
Subproject commit
4d2d9fc9e6feb7060589664af5855c9ef762bc89
doc/draft-ietf-codec-
harmony
.xml
→
doc/draft-ietf-codec-
opus
.xml
View file @
4e777532
...
...
@@ -2,10 +2,10 @@
<!DOCTYPE rfc SYSTEM 'rfc2629.dtd'>
<?rfc toc="yes" symrefs="yes" ?>
<rfc
ipr=
"trust200902"
category=
"std"
docName=
"draft-ietf-codec-
harmony
-00"
>
<rfc
ipr=
"trust200902"
category=
"std"
docName=
"draft-ietf-codec-
opus
-00"
>
<front>
<title
abbrev=
"Interactive Audio Codec"
>
Definition of the
Harmony
Audio Codec
</title>
<title
abbrev=
"Interactive Audio Codec"
>
Definition of the
Opus
Audio Codec
</title>
<author
initials=
"JM"
surname=
"Valin"
fullname=
"Jean-Marc Valin"
>
...
...
@@ -39,7 +39,7 @@
</author>
<date
day=
"
24
"
month=
"
Septem
ber"
year=
"2010"
/>
<date
day=
"
15
"
month=
"
Octo
ber"
year=
"2010"
/>
<area>
General
</area>
...
...
@@ -47,7 +47,7 @@
<abstract>
<t>
This document describes the
Harmony
codec, designed for interactive speech and audio
This document describes the
Opus
codec, designed for interactive speech and audio
transmission over the Internet.
</t>
</abstract>
...
...
@@ -57,7 +57,7 @@ transmission over the Internet.
<section
anchor=
"introduction"
title=
"Introduction"
>
<t>
We propose the
Harmony
codec based on a linear prediction layer (LP) and an
We propose the
Opus
codec based on a linear prediction layer (LP) and an
MDCT-based enhancement layer. The main idea behind the proposal is that
the speech low frequencies are usually more efficiently coded using
linear prediction codecs (such as CELP variants), while the higher frequencies
...
...
@@ -78,7 +78,7 @@ In this proposed prototype, the LP layer is based on the
<t>
This is a work in progress.
</t>
</section>
<section
anchor=
"hybrid"
title=
"
Harmony
Codec"
>
<section
anchor=
"hybrid"
title=
"
Opus
Codec"
>
<t>
In hybrid mode, each frame is coded first by the LP layer and then by the MDCT
...
...
@@ -290,7 +290,7 @@ audio stream must not cause the encoder to misbehave because this would
allow an attacker to attack transcoding gateways.
</t>
<t>
In its current version, the
Harmony
codec likely does NOT meet these
In its current version, the
Opus
codec likely does NOT meet these
security considerations, so it should be used with caution.
</t>
</section>
...
...
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