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Rate distribution between model and signal
KTH, School of Electrical Engineering (EES), Sound and Image Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Sound and Image Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
2007 (English)In: 2007 IEEE WORKSHOP ON APPLICATIONS OF SIGNAL PROCESSING TO AUDIO AND ACOUSTICS, NEW YORK: IEEE , 2007, 241-244 p.Conference paper, Published paper (Refereed)
Abstract [en]

Knowledge of a statistical model of the signal can be used to increase coding efficiency. A common approach is to use a fixed model structure with parameters that adapt to the signal. The model parameters and a signal representation that depends on the model are encoded. We show that, if the signal is divided into segments of a particular duration, and the model structure is fixed, then the optimal bit allocation for the model parameters does not vary with the overall rate. We discuss in detail the parameter rate for the autoregressive (AR) model. Our approach shows that the square error criterion in the signal domain is consistent with the commonly used root mean square log spectral error for the model parameters. Without using perceptual knowledge, we obtain a rate allocation for the model that is consistent with what is commonly used. This model rate is independent of overall coding rate. We provide experimental results for the application of the autoregressive model to speech that confirm the theory.

Place, publisher, year, edition, pages
NEW YORK: IEEE , 2007. 241-244 p.
Keyword [en]
Acoustics, Audio acoustics, Programming theory, Regression analysis
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-36112DOI: 10.1109/ASPAA.2007.4393033ISI: 000258319500061Scopus ID: 2-s2.0-50249164256ISBN: 978-1-4244-1618-9 (print)OAI: oai:DiVA.org:kth-36112DiVA: diva2:430579
Conference
IEEE Workshop on Applications of Signal Processing to Audio and Acoutics New Paltz, NY, OCT 21-24, 2007
Available from: 2011-07-11 Created: 2011-07-08 Last updated: 2011-09-14Bibliographically approved

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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