発表題目 Analytical approach to 2.5D sound field control using a circular double-layer array of fixed-directivity loudspeakers
 概要 This paper provides a regularization-free analytical approach to 2.5D interior and exterior sound field control using a circular double-layer array of fixed-directivity loudspeakers not only to provide a desired sound field inside the array but also to reduce the sound energy outside of it in the horizontal plane. The proposed method analytically derives the driving functions of the inner and outer circular arrays based on 2.5D spherical harmonic expansion to simultaneously control both sound fields inside and outside the array by a mode-matching framework. The results of computer simulations show that the proposed method is certainly effective compared with the conventional least squares approach that requires regularization schemes in terms of synthesis accuracy inside the listening zone over a wideband frequency range and the acoustic contrast between the quiet zone and the synthesis center at low frequencies.  
 発表/発行日 2017/03/08  
 発表/発行機関 The 42nd IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2017)
 研究テーマ 人と通信
 発表者
(NICT研究者のみを現在の所属で表示しています)
岡本 拓磨  【先進的音声技術研究室】
 発表区分 収録論文

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