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en:sammelsurium:opus_codec [2017/02/19 23:56]
Natenom
en:sammelsurium:opus_codec [2018/04/02 12:36]
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-======Opus codec====== 
-Opus is an Open Source codec standardized by the [http://​www.ietf.org/​ IETF]. 
  
-See [[http://​tools.ietf.org/​html/​rfc6716|RFC 6716]]. 
- 
-=====Information about Opus===== 
-  * Project page: http://​opus-codec.org/​ 
-  * Opus-FAQ: https://​wiki.xiph.org/​OpusFAQ 
-  * http://​people.xiph.org/​~xiphmont/​demo/​opus/​demo3.shtml 
-  * Opus on Wikipedia: http://​de.wikipedia.org/​wiki/​Opus_%28Audioformat%29 
-  * Examples and details http://​octasic.com/​en/​tech/​opus_audio_codec.php 
-  * Posting about the standardization of Opus: http://​xiph.org/​press/​2012/​rfc-6716/​ 
- 
-=====Different Opus modes===== 
-Opus has different modes (Celt mode, Silk mode and a Hybrid mode): The first one has the best performance. 
- 
-=====Compatibility===== 
-Newer versions of Opus are always backward compatible, so there will be no codec problems for example in [[:​mumble|Mumble]] as with Celt, Speex, Opus.  
- 
-See [[mumble:​benutzerhandbuch:​mumble:​codec|Codecs in Mumble]] 
- 
-=====Hearing tests and comparions===== 
-  * http://​www.opus-codec.org/​examples/​ 
- 
-=====Usage in Mumble===== 
-Mumble uses the Opus codec since version [[mumble:​1.2.4|1.2.4]]. 
- 
-=====Advantages of Opus compared to CELT (for example in Mumble)===== 
-We made few tests in Mumble, few subjective facts: 
-  * Even with an audio bandwidth of only 8 kbit/s Opus spoken word is easy to understand. With CELT it sounds very distorted. 
-  * Opus with 30 kbit/s sounds similar to CELT with 50 kbit/s. 
- 
-Another advantage (found on freenode in #mumble): 
-  * Correction in case packetloss sounds better with Opus. 
- 
-{{tag>​Opus Codec Sound Audio Mumble}} 
en/sammelsurium/opus_codec.txt · Last modified: 2018/04/02 12:36 (external edit)