A Voice Generation System Using an Intra-Mouth Vibrator-Ist Voicing Control Using Intra-Oral Pressure.
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Accession number;00A0534299
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| Title;A Voice Generation System Using an Intra-Mouth Vibrator-Ist Voicing Control Using Intra-Oral Pressure. |
| Author;
TAKAHASHI HIROKAZU
(Univ. of Tokyo, Grad. Sch.)
NAKAO MASAYUKI
(Univ. of Tokyo, Grad. Sch.)
OKUSA TAKENORI
(Univ. of Tokyo, Grad. Sch.)
HATAMURA YOTARO
(Univ. of Tokyo, Grad. Sch.)
KIKUCHI YATARO
(Kikuchishikaiin)
KAGA KIMITAKA
(Univ. of Tokyo, Fac. of Med.)
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Journal Title;Japan Journal of Logopedics and Phoniatrics
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Journal Code:Z0214B
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ISSN:0030-2813
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VOL.41;NO.2;PAGE.130-138(2000)
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| Figure&Table&Reference;FIG.10, TBL.1, REF.23 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;For alaryngeal speech, we propose a voice generation system using an intra-mouth vibrator. The vibrator, fixed in artificial teeth, generates sounds in the oral cavity as a substitute for glottal sounds. We evaluated intelligibility of speech with this system; correct identification of CV(consonant-vowel) syllables was about 50%, which was almost the same as for electrolaryngeal speech. Both speech systems showed 30% incorrect identification of voiceless consonants perceived as voiced. These errors were recognized as being induced by VOT(voice onset time) and first formant transition. To make voiceless consonants clearly sounded, we controlled the sound source using intra-oral pressure, which increases during voiceless consonants. The sounds of the vibrator should be suspended when intra-oral pressure increases. With this method we were able to improve voiceless consonant recognition errors to 10%, and found that the system worked as designed. (author abst.) |
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