Quasi closed phase analysis of speech signals using time varying weighted linear prediction for accurate formant tracking

Dhananjaya Gowda, Manu Airaksinen, Paavo Alku

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

4 Citations (Scopus)

Abstract

Recent research on temporally weighted linear prediction shows that quasi closed phase (QCP) analysis of speech signals provides better modeling of the vocal tract and the glottal source. Quasi closed phase analysis gives more weightage on the closed phase of the glottal cycle, at the same time deemphasizing the region around the instant of significant excitation which is often poorly predicted. However, all the traditional analysis techniques including the QCP analysis is performed over short intervals of time. They do not impose any continuity constraints either on the vocal tract system or the glottal source. Such constraints are often imposed at a later stage to either smooth or track the estimated features over time. Time varying linear prediction (TVLP) provides a framework for modeling speech with a long-term continuity constraint imposed on the vocal tract shape. In this paper, we propose a new method for accurate modeling and tracking of the vocal tract resonances by integrating the advantages of a QCP analysis with that of TVLP. Formant tracking experiments show consistent improvement in performance over traditional LP or TVLP methods under a variety of conditions including different voice types and over a wide range of fundamental frequency.

Original languageEnglish
Title of host publicationIEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2016
PublisherIEEE
Pages4980-4984
Number of pages5
Volume2016-May
ISBN (Print)9781479999880
DOIs
Publication statusPublished - 18 May 2016
MoE publication typeA4 Article in a conference publication
EventIEEE International Conference on Acoustics, Speech, and Signal Processing - Shanghai, China
Duration: 20 Mar 201625 Mar 2016
Conference number: 41
http://www.icassp2016.org/

Publication series

NameProceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISSN (Print)1520-6149
ISSN (Electronic)2379-190X

Conference

ConferenceIEEE International Conference on Acoustics, Speech, and Signal Processing
Abbreviated titleICASSP 2016
CountryChina
CityShanghai
Period20/03/201625/03/2016
Internet address

Keywords

  • formant tracking
  • Quasi closed phase analysis
  • time varying Linear prediction
  • weighted linear prediction

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