SVOPC (Sinusoidal Voice Over Packet Coder) is a compression method for audio which is used by VOIP applications. It is a lossyspeech compressioncodec designed specifically towards communication channels suffering from packet loss. It uses more bandwidth than best bandwidth-optimised codecs, but it is packet loss resistant instead.
Skype Limited developed a codec called 'SVOPC' for Skype. It was first used in Skype 3.2 beta 53, released on March 28, 2007.[1][2][3][4] Starting with Skype 4.0, SVOPC is replaced by SILK.
Operation is quasi-harmonic modelling of the linear prediction residual.
The codec uses a 16 kHz sample rate and allows for 8 kHz of audio bandwidth.[3][4] SVOPC provides synthesized speech of good subjective quality at around 20 kbit/s.[1]
Because the compression relies on floating point mathematics it can be inefficient when it's running in an embedded system as this will likely not offer the same kind of floating point capabilities as, say, a PC. The new codec SILK has been designed with this in mind.
Lindblom, J. (2005). "A sinusoidal voice over packet coder tailored for the frame-erasure channel". IEEE Transactions on Speech and Audio Processing. 13 (5): 787–798. doi:10.1109/TSA.2005.851913. S2CID 1361385.
Stanford, M. - "Skype’s new super-wideband codec"
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svopc, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, december, 2007, lear. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources SVOPC news newspapers books scholar JSTOR December 2007 Learn how and when to remove this template message SVOPC Sinusoidal Voice Over Packet Coder is a compression method for audio which is used by VOIP applications It is a lossy speech compression codec designed specifically towards communication channels suffering from packet loss It uses more bandwidth than best bandwidth optimised codecs but it is packet loss resistant instead Skype Limited developed a codec called SVOPC for Skype It was first used in Skype 3 2 beta 53 released on March 28 2007 1 2 3 4 Starting with Skype 4 0 SVOPC is replaced by SILK Contents 1 Technical information 2 See also 3 References 4 SourcesTechnical information editOperation is quasi harmonic modelling of the linear prediction residual The codec uses a 16 kHz sample rate and allows for 8 kHz of audio bandwidth 3 4 SVOPC provides synthesized speech of good subjective quality at around 20 kbit s 1 Because the compression relies on floating point mathematics it can be inefficient when it s running in an embedded system as this will likely not offer the same kind of floating point capabilities as say a PC The new codec SILK has been designed with this in mind See also editSkype protocol Comparison of audio coding formatsReferences edit a b Skype Community 2008 07 29 Current codec uses Internet Archive Skype Journal 2007 03 28 Skype 3 2 Sets New Standard for Sound Quality archived original Retrieved 2009 09 01 a b Lee S Dryburgh 2008 02 06 Interview with Jonathan Christensen Skype eComm Media Inc Retrieved 2009 09 01 a b Michael Stanford 2009 01 13 Skype s new super wideband codec SILK Wirevolution Retrieved 2009 09 01Sources editDryburghon L Interview with Jonathan Christensen General Manager of Skype about SVOPC Audio Lindblom J 2005 A sinusoidal voice over packet coder tailored for the frame erasure channel IEEE Transactions on Speech and Audio Processing 13 5 787 798 doi 10 1109 TSA 2005 851913 S2CID 1361385 Stanford M Skype s new super wideband codec nbsp This multimedia software related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title SVOPC amp oldid 1166731826, wikipedia, wiki, book, books, library,
