Sound field equalization by active acoustic impedance control

Jyunji Hagio; Akihiro Kakiuchi; Akira Omoto

Sound field equalization by active acoustic impedance control

Jyunji Hagio, Akihiro Kakiuchi, Akira Omoto

Sound Culture / Art Management

Research output: Contribution to conference › Paper

2 Citations (Scopus)

Abstract

This study examined sound field equalization using active control. The specific acoustic impedance, the ratio of sound pressure and particle velocities were adopted as a source of control. Providing the impedance in the aimed direction was controlled to be the characteristic impedance of the medium, the propagating plane wave in any particular direction was expected. In addition, the directional characteristic of the sound propagation was also controlled by adjusting the weight of ratios of pressure and velocity in three orthogonal directions. The results of numerical simulations indicated the potential efficiency of the proposed method. Furthermore, results of subjective experiments showed the possibility of the proposed control changing the perceived direction of the incoming sound.

Original language	English
Publication status	Published - Apr 14 2011
Event	AES 40th International Conference on Spatial Audio: Sense the Sound of Space - Tokyo, Japan Duration: Oct 8 2010 → Oct 10 2010

Other

Other	AES 40th International Conference on Spatial Audio: Sense the Sound of Space
Country	Japan
City	Tokyo
Period	10/8/10 → 10/10/10

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering
Acoustics and Ultrasonics

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Hagio, J., Kakiuchi, A., & Omoto, A. (2011). Sound field equalization by active acoustic impedance control. Paper presented at AES 40th International Conference on Spatial Audio: Sense the Sound of Space, Tokyo, Japan.

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abstract = "This study examined sound field equalization using active control. The specific acoustic impedance, the ratio of sound pressure and particle velocities were adopted as a source of control. Providing the impedance in the aimed direction was controlled to be the characteristic impedance of the medium, the propagating plane wave in any particular direction was expected. In addition, the directional characteristic of the sound propagation was also controlled by adjusting the weight of ratios of pressure and velocity in three orthogonal directions. The results of numerical simulations indicated the potential efficiency of the proposed method. Furthermore, results of subjective experiments showed the possibility of the proposed control changing the perceived direction of the incoming sound.",

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N2 - This study examined sound field equalization using active control. The specific acoustic impedance, the ratio of sound pressure and particle velocities were adopted as a source of control. Providing the impedance in the aimed direction was controlled to be the characteristic impedance of the medium, the propagating plane wave in any particular direction was expected. In addition, the directional characteristic of the sound propagation was also controlled by adjusting the weight of ratios of pressure and velocity in three orthogonal directions. The results of numerical simulations indicated the potential efficiency of the proposed method. Furthermore, results of subjective experiments showed the possibility of the proposed control changing the perceived direction of the incoming sound.

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