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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.
Operation is quasi-harmonic modelling of the linear prediction residual.
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.
- 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
- Lee S. Dryburgh (2008-02-06) Interview with Jonathan Christensen (Skype), eComm Media, Inc. Retrieved 2009-09-01
- Michael Stanford (2009-01-13) Skype’s new super-wideband codec (SILK), Wirevolution, Retrieved 2009-09-01
- Dryburghon, L. - "Interview with Jonathan Christensen, General Manager of Skype, about SVOPC Audio"
- Lindblom, J. - "Sinusoidal Voice Over Packet Coder Tailored for the Frame-Erasure Channel"
- Stanford, M. - "Skype’s new super-wideband codec"
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