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Towards optimal quantization in multistage audio coding
KTH, Superseded Departments, Signals, Sensors and Systems.
KTH, Superseded Departments, Signals, Sensors and Systems.
2004 (English)In: 2004 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOL IV, PROCEEDINGS: AUDIO AND ELECTROACOUSTICS SIGNAL PROCESSING FOR COMMUNICATIONS, NEW YORK: IEEE , 2004, 205-208 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this work, we develop a new method for quantization in multistage audio coding. We consider the case of a two-stage sinusoidal/waveform coder. Given a distortion measure and a bit-rate constraint, we analytically derive the optimal rate distribution between subcoders (stages) and the corresponding optimal quantizers, which allows the coder to easily adapt to changes in bit-rate requirements. We verify that the performance, both in terms of signal-to-noise ratio (SNR) and perceptual quality, is higher if the input to the second stage is obtained by subtracting the quantized first-stage reconstruction from the original signal, as opposed to subtracting the unquantized reconstruction.

Place, publisher, year, edition, pages
NEW YORK: IEEE , 2004. 205-208 p.
Series
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, ISSN 1520-6149
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-44758ISI: 000222179500052Scopus ID: 2-s2.0-4544343159OAI: oai:DiVA.org:kth-44758DiVA: diva2:451364
Conference
IEEE International Conference on Acoustics, Speech, and Signal Processing Location: Montreal, CANADA Date: MAY 17-21, 2004
Note
QC 20111025Available from: 2011-10-25 Created: 2011-10-25 Last updated: 2011-11-02Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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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