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Numerical simulation of transfer and attenuation characteristics of soft-tissue conducted sound originating from vocal tract
http://hdl.handle.net/10091/13654
http://hdl.handle.net/10091/13654fa5b1737-d6cf-4119-9a5b-df597009ded1
| 名前 / ファイル | ライセンス | アクション |
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Numerical_simulation_transfer_attenuation_characteristics.pdf (334.7 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||
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| 公開日 | 2012-03-01 | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | Numerical simulation of transfer and attenuation characteristics of soft-tissue conducted sound originating from vocal tract | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| DOI | ||||||||||||||
| 関連識別子 | https://doi.org/10.1016/j.apacoust.2008.05.003 | |||||||||||||
| 関連名称 | 10.1016/j.apacoust.2008.05.003 | |||||||||||||
| キーワード | ||||||||||||||
| 主題 | Non-audible murmur, Finite difference time domain method, Soft tissue, Spectral decay | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||
| タイプ | journal article | |||||||||||||
| 著者 |
Otani, Makoto
× Otani, Makoto
× Hirahara, Tatsuya
× Shimizu, Shota
× Adachi, Seiji
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| 出版者 | ||||||||||||||
| 出版者 | ELSEVIER SCI LTD | |||||||||||||
| 引用 | ||||||||||||||
| 内容記述 | APPLIED ACOUSTICS. 70(3):469-472 (2009) | |||||||||||||
| 書誌情報 |
APPLIED ACOUSTICS 巻 70, 号 3, p. 469-472, 発行日 2009-03 |
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| 抄録 | ||||||||||||||
| 内容記述 | A non-audible murmur (NAM), a very weak speech sound produced without vocal cord vibration, can be detected by a special NAM microphone attached to the neck, thereby providing a new speech communication tool for functional speech disorders as well as human-to-machine and human-to-human interfaces with inaudible voice input for use with unimpaired. The NAM microphone is a condenser microphone covered with soft-silicone impression material that provides good impedance matching with the soft tissues of the neck. Because higher-frequency components are suppressed severely, however, the NAM detected with this device can be insufficiently clear. To improve NAM clarity, the mechanism of NAM production as well as the transfer characteristics of the NAM in soft neck tissues must be clarified. We have investigated sound propagation from the vocal tract to the neck surface, using a finite difference time domain method and a head model based on magnetic resonance imaging scans. Numerical results show that, compared to air-conducted sound detected in front of a mouth, soft-tissue-conducted sound attenuates 50 dB at 1 kHz, which consists of 30 dB full-range attenuation due to air-to-soft-tissues transmission loss and -10 dB/octave spectral decay due to a propagation loss in soft tissues. The decay agrees well with the spectral characteristics of the measured NAM. (C) 2008 Elsevier Ltd. All rights reserved. | |||||||||||||
| 資源タイプ（コンテンツの種類） | ||||||||||||||
| ISSN | ||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||
| 収録物識別子 | 0003-682X | |||||||||||||
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| 収録物識別子タイプ | NCID | |||||||||||||
| 収録物識別子 | AA00543169 | |||||||||||||
| 権利 | ||||||||||||||
| 権利情報 | Copyright© 2008 Elsevier Ltd. All rights reserved. | |||||||||||||
| 出版タイプ | ||||||||||||||
| 出版タイプ | AM | |||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||||
| WoS | ||||||||||||||
| URL | http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000262243300010 | |||||||||||||
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Cite as
Otani, Makoto, Hirahara, Tatsuya, Shimizu, Shota, Adachi, Seiji, 2009, Numerical simulation of transfer and attenuation characteristics of soft-tissue conducted sound originating from vocal tract: ELSEVIER SCI LTD, 469–472 p.
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