From 4e1c5848328ee28822b75ef7ae8c66b63c832409 Mon Sep 17 00:00:00 2001 From: Andre Noll Date: Thu, 26 Dec 2013 00:54:13 +0000 Subject: [PATCH] manual: Add description of ogg/opus. Also mention in the speex section that speex was obsoleted by opus. --- web/manual.m4 | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/web/manual.m4 b/web/manual.m4 index 41ab53cd..84f399d2 100644 --- a/web/manual.m4 +++ b/web/manual.m4 @@ -1144,7 +1144,17 @@ Excited Linear Prediction) coding. It is designed for voice over IP applications, has modest complexity and a small memory footprint. Wideband and narrowband (telephone quality) speech are supported. As for Vorbis audio, Speex bit-streams are often stored -in OGG files. +in OGG files. As of 2012 this codec is considered obsolete since the +Oppus codec, described below, surpasses its performance in all areas. + +*OGG/Opus* + +Opus is a lossy audio compression format standardized through RFC +6716 in 2012. It combines the speech-oriented SILK codec and the +low-latency CELT (Constrained Energy Lapped Transform) codec. Like +OGG/Vorbis and OGG/Speex, Opus data is usually encapsulated in OGG +containers. All known software patents which cover Opus are licensed +under royalty-free terms. *AAC* @@ -2190,6 +2200,8 @@ RFCs Congestion Control ID 2: TCP-like Congestion Control - XREFERENCE(http://www.ietf.org/rfc/rfc4342.txt, RFC 4342) (2006): Congestion Control ID 3: TCP-Friendly Rate Control (TFRC) + - XREFERENCE(http://www.ietf.org/rfc/rfc6716.txt, RFC 6716) (2012): + Definition of the Opus Audio Codec Application web pages ~~~~~~~~~~~~~~~~~~~~~ -- 2.39.2