Estimation of vowel spectra near vocal chords with restoration of a clipped speech signal

Andrey Barabanov, Vera Evdokimova, Pavel Skrelin

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

2 Scopus citations

Abstract

Speech signals with Russian vowels were recorded simultaneously by two microphones. The first microphone was located in the larynx near the vocal chords and the second one was outside a mouth near the lips. A signal in the inner microphone is formed by the vocal chords and contains a weak reverberation echo. It is clipped to a half of the energy because of the sensitivity restrictions on the microphone. A new mathematical algorithm is proposed for restoration of the clipped signal part. The restored signal sounds better. The restored spectra of vowels contain the first formant that cannot be explained by a backward reverberation. A transfer function of the vocal tract is estimated by comparing spectra of the signals from the input and output microphones.

Original languageEnglish
Title of host publicationSpeech and Computer - 17th International Conference, SPECOM 2015, Proceedings
EditorsAndrey Ronzhin, Rodmonga Potapova, Nikos Fakotakis
PublisherSpringer Nature
Pages209-216
Number of pages8
ISBN (Print)9783319231310
DOIs
StatePublished - 2015
Event17th International Conference on Speech and Computer, SPECOM 2015 - Athens, Greece
Duration: 20 Sep 201524 Sep 2015

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume9319
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference17th International Conference on Speech and Computer, SPECOM 2015
CountryGreece
CityAthens
Period20/09/1524/09/15

Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

Keywords

  • Restoration of clipped signal
  • Vocal chords
  • Vocal transfer function

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