Item type |
学術雑誌論文 / Journal Article(1) |
公開日 |
2012-03-01 |
タイトル |
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タイトル |
Silent-speech enhancement using body-conducted vocal-tract resonance signals |
言語 |
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言語 |
eng |
DOI |
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関連識別子 |
https://doi.org/10.1016/j.specom.2009.12.001 |
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関連名称 |
10.1016/j.specom.2009.12.001 |
キーワード |
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主題 |
Non-audible murmur, Body-conducted sound, Voice conversion, Talking aids |
資源タイプ |
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資源 |
http://purl.org/coar/resource_type/c_6501 |
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タイプ |
journal article |
著者 |
Hirahara, Tatsuya
Otani, Makoto
Shimizu, Shota
Toda, Tomoki
Nakamura, Keigo
Nakajima, Yoshitaka
Shikano, Kiyohiro
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出版者 |
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出版者 |
ELSEVIER SCIENCE BV |
引用 |
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内容記述 |
SPEECH COMMUNICATION. 52(4):301-313 (2010) |
書誌情報 |
SPEECH COMMUNICATION
巻 52,
号 4,
p. 301-313,
発行日 2010-04
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抄録 |
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内容記述 |
The physical characteristics of weak body-conducted vocal-tract resonance signals called non-audible murmur (NAM) and the acoustic characteristics of three sensors developed for detecting these signals have been investigated. NAM signals attenuate 50 dB at 1 kHz; this attenuation consists of 30-dB full-range attenuation due to air-to-body transmission loss and 10 dB/octave spectral decay due to a sound propagation loss within the body. These characteristics agree with the spectral characteristics of measured NAM signals. The sensors have a sensitivity of between 41 and 58 dB [V/Pa] at I kHz, and the mean signal-to-noise ratio of the detected signals was 15 dB. On the basis of these investigations, three types of silent-speech enhancement systems were developed: (1) simple, direct amplification of weak vocal-tract resonance signals using a wired urethane-elastomer NAM microphone, (2) simple, direct amplification using a wireless urethane-elastomer-duplex NAM microphone, and (3) transformation of the weak vocal-tract resonance signals sensed by a soft-silicone NAM microphone into whispered speech using statistical conversion. Field testing of the systems showed that they enable voice impaired people to communicate verbally using body-conducted vocal-tract resonance signals. Listening tests demonstrated that weak body-conducted vocal-tract resonance sounds can be transformed into intelligible whispered speech sounds. Using these systems, people with voice impairments can re-acquire speech communication with less effort. (C) 2009 Elsevier B.V. All rights reserved. |
資源タイプ(コンテンツの種類) |
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内容記述 |
Article |
ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0167-6393 |
書誌レコードID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA10630135 |
権利 |
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権利情報 |
Copyright© 2009 Elsevier B.V. All rights reserved. |
出版タイプ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
WoS |
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URL |
http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000276026400004 |