Vocal tract length perturbation and its application to male-female vocal tract shape conversion

An alternative and complete derivation of the vocal tract length sensitivity function, which is an equation for finding a change in formant frequency due to perturbation of the vocal tract length [Fant, Quarterly Progress and Status Rep. No. 4, Speech Transmission Laboratory, Kungliga Teknisha Högsk...

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Veröffentlicht in:The Journal of the Acoustical Society of America 2007-06, Vol.121 (6), p.3874-3885
Hauptverfasser: Adachi, Seiji, Takemoto, Hironori, Kitamura, Tatsuya, Mokhtari, Parham, Honda, Kiyoshi
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container_title The Journal of the Acoustical Society of America
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creator Adachi, Seiji
Takemoto, Hironori
Kitamura, Tatsuya
Mokhtari, Parham
Honda, Kiyoshi
description An alternative and complete derivation of the vocal tract length sensitivity function, which is an equation for finding a change in formant frequency due to perturbation of the vocal tract length [Fant, Quarterly Progress and Status Rep. No. 4, Speech Transmission Laboratory, Kungliga Teknisha Högskolan, Stockholm, 1975, pp. 1–14] is presented. It is based on the adiabatic invariance of the vocal tract as an acoustic resonator and on the radiation pressure on the wall and at the exit of the vocal tract. An algorithm for tuning the vocal tract shape to match the formant frequencies to target values, such as those of a recorded speech signal, which was proposed in Story [J. Acoust. Soc. Am. 119, 715–718 (2006)], is extended so that the vocal tract length can also be changed. Numerical simulation of this extended algorithm shows that it can successfully convert between the vocal tract shapes of a male and a female for each of five Japanese vowels.
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source MEDLINE; AIP Journals Complete; AIP Acoustical Society of America
subjects Biological and medical sciences
Ear and associated structures. Auditory pathways and centers. Hearing. Vocal organ. Phonation. Sound production. Echolocation
Female
Fundamental and applied biological sciences. Psychology
Humans
Male
Mathematics
Models, Biological
Sensitivity and Specificity
Sex Characteristics
Sound
Vertebrates: nervous system and sense organs
Vocal Cords - anatomy & histology
Vocal Cords - physiology
Voice - physiology
title Vocal tract length perturbation and its application to male-female vocal tract shape conversion
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