講演抄録/キーワード |
講演名 |
2014-01-27 15:20
An Envelope Method for Improving the Product Directivity Models of the Parametric Loudspeaker ○Chuang Shi(Nanyang Technological Univ./Univ. of Electro-Comm.)・Hideyuki Nomura・Tomoo Kamakura(Univ. of Electro-Comm.)・Woon-Seng Gan(Nanyang Technological Univ.) US2013-91 EA2013-104 |
抄録 |
(和) |
The directivity of a parametric loudspeaker is roughly described by the product directivity principle or more accurately estimated by the product directivity models. There are two types of discrepancies observed between experimental directivities and those obtained based on the product directivity principle or models. Firstly, experimental beamwidths of the demodulated wave are wider than those numerically calculated. Secondly, sidelobes of the demodulated wave occur in the simulation, but they are rarely observed in the measurement. An envelope method is suggested in this paper, which can improve the product directivity principle or models in predicting the directivity of a parametric loudspeaker. |
(英) |
The directivity of a parametric loudspeaker is roughly described by the product directivity principle or more accurately estimated by the product directivity models. There are two types of discrepancies observed between experimental directivities and those obtained based on the product directivity principle or models. Firstly, experimental beamwidths of the demodulated wave are wider than those numerically calculated. Secondly, sidelobes of the demodulated wave occur in the simulation, but they are rarely observed in the measurement. An envelope method is suggested in this paper, which can improve the product directivity principle or models in predicting the directivity of a parametric loudspeaker. |
キーワード |
(和) |
Parametric loudspeaker / Product directivity / Product directivity / / / / / |
(英) |
Parametric loudspeaker / Product directivity / Product directivity / / / / / |
文献情報 |
信学技報, vol. 113, no. 413, EA2013-104, pp. 7-10, 2014年1月. |
資料番号 |
EA2013-104 |
発行日 |
2014-01-20 (US, EA) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
US2013-91 EA2013-104 |
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