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Predictive Audio Coding Using Rate-Distortion-Optimal Pre-and-Post-Filtering
KTH, School of Electrical Engineering (EES), Sound and Image Processing. (SIP)
KTH, School of Electrical Engineering (EES), Sound and Image Processing.
KTH, School of Electrical Engineering (EES), Sound and Image Processing.
2011 (English)In: Applications of Signal Processing to Audio and Acoustics (WASPAA), 2011 IEEE Workshop on, IEEE conference proceedings, 2011, 213-216 p.Conference paper, Published paper (Refereed)
Abstract [en]

A natural approach to audio coding is to use a rate-distortion optimal design combined with a perceptual model. While this approach is common in transform coding, existing predictive-coding based audio coders are generally not optimal and they benefit from heuristically motivated post-filtering. As delay requirements often force the use of predictive coding, we consider audio coding with a pre- and post-filtered predictive structure that was recently proven to be asymptotically optimal in the rate-distortion sense [1]. We show that this audio coding is efficient in achieving the state-of-the-art performance. We also show that the pre-filter plays a relatively minor role. This leads to an analytic approach for optimizing the post-filter and the predictor at each rate, eliminating the need for manual re-tuning whenever a different rate is called for. In a subjective test, the theoretically optimized post-filter provided a better performance than a conventional post-filter.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2011. 213-216 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-52712DOI: 10.1109/ASPAA.2011.6082345ISI: 000298302900054Scopus ID: 2-s2.0-83455255659OAI: oai:DiVA.org:kth-52712DiVA: diva2:467508
Conference
2011 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2011, New Paltz, NY, October, 16-19, 2011
Note
QC 20120103Available from: 2011-12-19 Created: 2011-12-19 Last updated: 2012-04-03Bibliographically approved

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Alhaj Moussa, ObadaLi, MinyueKleijn, W. Bastiaan
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CiteExportLink to record
Permanent link

Direct link
Cite
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