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FLEXCODE: FLEXIBLE AUDIO CODING
KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
2010 (English)In: 2010 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, 2010, 361-364 p.Conference paper, Published paper (Refereed)
Abstract [en]

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.
Series
International Conference on Acoustics Speech and Signal Processing ICASSP, ISSN 1520-6149
Keyword [en]
audio coding, source modeling, quantization
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-32253ISI: 000287096000088Scopus ID: 2-s2.0-78049397971ISBN: 978-1-4244-4296-6 (print)OAI: oai:DiVA.org:kth-32253DiVA: diva2:411468
Conference
2010 IEEE International Conference on Acoustics, Speech, and Signal Processing
Note
QC 20110418Available from: 2011-04-18 Created: 2011-04-11 Last updated: 2011-04-18Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf