Rather than select a single type of codec optimized for a particular application, the authors propose a generic sound-coding technology that combines a range of different coding algorithms based on the current properties of the audio and the channel constraints. Rate-distortion optimization is a promising method for such a framework. Subjective listening tests show the advantages of this kind of flexibility in such applications as Internet radio, portable storage, and mobile communications. Bit allocation is not fixed but flexible, which allows for adaptation to time-varying inputs and changing channel properties.

Authors: Schijndel, Nicolle H. van; Bensa, Julien; Christensen, Mads G.; Colomes, Catherine; Edler, Bernd; Heusdens, Richard; Jensen, Jesper; Jensen, Søren Holdt; Kleijn, W. Bastiaan; Kot, Valery; Kövesi, Balázs; Lindblom, Jonas; Massaloux, Dominique; Niamut, Omar A.; Nordén, Fredrik; Plasberg, Jan H.; Vafin, Renat; Par, Steven van de; Virette, David; Wübbolt, Oliver
Affiliations: Philips Research Laboratories, Digital Signal Processing Group, 5656 AE Eindhoven, The Netherlands; France Telecom / Orange Research Laboratories, F-22307 Lannion, France; Aalborg University, Department of Electronic Systems, DK-9220 Aalborg, Denmark; University of Hannover, Laboratorium fur Informationstechnologie, D-30167 Hannover, Germany; Delft University of Technology, Department of Mediamatics, 2628 CD Delft, The Netherlands; KTH ( Royal Institute of Technology ), School of Electrical Engineering, SE10044 Stockholm, Sweden(See document for exact affiliation information.)
JAES Volume 56 Issue 10 pp. 787-809; October 2008
Publication Date: November 10, 2008

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