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Estimation of short-term predictor parameters for coding and enhancement of noisy speech
KTH, Superseded Departments, Signals, Sensors and Systems.
KTH, Superseded Departments, Signals, Sensors and Systems.
KTH, Superseded Departments, Signals, Sensors and Systems.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 I, PROCEEDINGS: SPEECH PROCESSING, NEW YORK: IEEE , 2004, 705-708 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, we describe a technique for obtaining estimates of the short-term predictor parameters of speech under noisy conditions. We use a-priori information about speech in the form of a trained codebook of speech linear predictive coefficients. The contribution of this paper is two-fold. First, we provide a framework where the standard vector quantization search to obtain the quantized linear predictive coefficients can be replaced by a maximum likelihood search, given the noisy observation, the speech codebook and an estimate of the noise. This results in an enhancement method that is integrated with parametric coders such as linear predictive analysis-by-synthesis coders. Second, we provide a scheme where the chosen vector is not restricted to be an element of the codebook. An interpolative search between the maximum likelihood estimate and its nearest neighbors in the codebook is used to improve the precision of the estimated parameters. Such a scheme is relevant when enhancement is considered separately from coding. Experimental results show improved performance for the proposed methods.

Place, publisher, year, edition, pages
NEW YORK: IEEE , 2004. 705-708 p.
Series
IEEE International Conference on Acoustics, Speech and Signal Processing. Proceedings, ISSN 1520-6149
Keyword [en]
Acoustic noise, Code converters, Interpolation, Linear systems, Parameter estimation, Vector quantization
National Category
Computer and Information Science Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-44755ISI: 000222173500177Scopus ID: 2-s2.0-4544263842ISBN: 0-7803-8484-9 (print)OAI: oai:DiVA.org:kth-44755DiVA: diva2:451401
Conference
IEEE International Conference on Acoustics, Speech, and Signal Processing Location: Montreal, CANADA Date: MAY 17-21, 2004
Note

QC 20111025

Available from: 2011-10-25 Created: 2011-10-25 Last updated: 2014-12-11Bibliographically 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
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