Identification and reconstruction of the unvoiced component in speech

W. Bastiaan Kleijn, A. Jefremov, Manohar Murthi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Speech is well described by a source-filter model. The source properties are critical for good quality reconstructed speech. We describe a source model which facilitates both low-rate coding and signal modification. The source signal is described by means of pitch-synchronous frame expansions, with different subsets of the coefficients corresponding to so-called voiced and unvoiced components. To obtain a perceptually plausible voiced-unvoiced decomposition even at speech on-sets, our frame functions adapt to the signal. The generation of the unvoiced component consists of the replacement of the corresponding coefficients with realizations of a random variable with similar statistics. Existing sinusoidal and waveform-interpolation excitation models form approximations to the presented procedure.

Original languageEnglish (US)
Title of host publicationConference Record of the Asilomar Conference on Signals, Systems and Computers
Pages1459-1463
Number of pages5
Volume2
StatePublished - 2000
Externally publishedYes
Event34th Asilomar Conference - Pacific Grove, CA, United States
Duration: Oct 29 2000Nov 1 2000

Other

Other34th Asilomar Conference
CountryUnited States
CityPacific Grove, CA
Period10/29/0011/1/00

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ASJC Scopus subject areas

  • Hardware and Architecture
  • Signal Processing
  • Electrical and Electronic Engineering

Cite this

Bastiaan Kleijn, W., Jefremov, A., & Murthi, M. (2000). Identification and reconstruction of the unvoiced component in speech. In Conference Record of the Asilomar Conference on Signals, Systems and Computers (Vol. 2, pp. 1459-1463)