Implementing a Superwideband Codec for Smartphone VoIP Services

Konferenz: European Wireless 2013 - 19th European Wireless Conference
16.04.2013 - 18.04.2013 in Guildford, UK

Tagungsband: European Wireless 2013

Seiten: 6Sprache: EnglischTyp: PDF

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Davies, Martyn; Elwood, Dean (Voxygen Limited, 35 Britannia Row, London N1 8QH, UK)
Politis, Christos (Wireless Multimedia & Networking (WMN), Research Group, Kingston University London, Penrhyn Road, Kingston KT1 2EE, UK)

The growing popularity of Voice over IP (VoIP) services has allowed a number of important enhancements to basic voice services, including wideband codecs (coderdecoders) that allow higher fidelity audio to be efficiently transmitted. In addition, widespread use of smartphones has created an environment where such services can be rapidly adopted. This paper describes the implementation of Google’s iSAC wideband codec in an Apple Smartphone, as part of a commercial VoIP client created by Voxygen1. In addition, the paper summarizes some recent trends in the implementation of wideband codecs. Keywords — VoIP; wideband; mobile; speech; quality