FLEXCODE: FLEXIBLE AUDIO CODING
2010 (English)In: 2010 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, 2010, 361-364 p.Conference paper (Refereed)
Modern networks are highly variable and, as a result, source coders are commonly used under conditions that they were not designed for. We address this problem with a source-coding philosophy that aims at the instantaneous re-optimization of a source coder to match a wide range of constraints on rate or quality and a wide range of packet-loss rates. We present a number of technologies that can be reconfigured by solving analytic relations that use the current conditions and a statistical description of the source as input. The technologies include distribution-preserving quantizers, flexible multiple-description quantizers, and a rate distribution scheme. Based on the generic technologies, we created a complete audio coder. Formal listening tests show that the resulting audio coding scheme with full flexibility provides a quality that is on-par with the best standardized codecs for any particular rate.
Place, publisher, year, edition, pages
2010. 361-364 p.
, International Conference on Acoustics Speech and Signal Processing ICASSP, ISSN 1520-6149
audio coding, source modeling, quantization
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-32253ISI: 000287096000088ScopusID: 2-s2.0-78049397971ISBN: 978-1-4244-4296-6OAI: oai:DiVA.org:kth-32253DiVA: diva2:411468
2010 IEEE International Conference on Acoustics, Speech, and Signal Processing
QC 201104182011-04-182011-04-112011-04-18Bibliographically approved