Modal analysis and sound field simulation of vibration panels in a free sound field and in a rectangular enclosure

Kazuhiko Kawahara; Akihiro Sonogi; Shin Ya Sato

Modal analysis and sound field simulation of vibration panels in a free sound field and in a rectangular enclosure

Kazuhiko Kawahara, Akihiro Sonogi, Shin Ya Sato

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Several types of implementation of panel loudspeakers, for example, distributed mode loudspeaker(DML), are proposed. The diaphragm of DML is thought as behave like a bending plate. The diaphragm of an electrostatic loudspeaker is thought move as a rigid plate. What is the difference of an acoustical sound field generation feature with each implementation ? In this paper, we used models of same dimensional rectangular panel. One is a rigid diaphragm. Another is a bending panel that has an actuator in the center of it. We made simulations of directivity and sound pressure distribution in a rectangular room. We could show less coherent SPL distribution in the case of bending panel.

Original language	English
Title of host publication	130th Audio Engineering Society Convention 2011
Pages	1193-1199
Number of pages	7
Publication status	Published - Dec 1 2011
Event	130th Audio Engineering Society Convention 2011 - London, United Kingdom Duration: May 13 2011 → May 16 2011

Publication series

Name	130th Audio Engineering Society Convention 2011
Volume	2

Other

Other	130th Audio Engineering Society Convention 2011
Country/Territory	United Kingdom
City	London
Period	5/13/11 → 5/16/11

All Science Journal Classification (ASJC) codes

Modelling and Simulation
Acoustics and Ultrasonics

Cite this

Modal analysis and sound field simulation of vibration panels in a free sound field and in a rectangular enclosure. / Kawahara, Kazuhiko; Sonogi, Akihiro; Sato, Shin Ya.

130th Audio Engineering Society Convention 2011. 2011. p. 1193-1199 (130th Audio Engineering Society Convention 2011; Vol. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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abstract = "Several types of implementation of panel loudspeakers, for example, distributed mode loudspeaker(DML), are proposed. The diaphragm of DML is thought as behave like a bending plate. The diaphragm of an electrostatic loudspeaker is thought move as a rigid plate. What is the difference of an acoustical sound field generation feature with each implementation ? In this paper, we used models of same dimensional rectangular panel. One is a rigid diaphragm. Another is a bending panel that has an actuator in the center of it. We made simulations of directivity and sound pressure distribution in a rectangular room. We could show less coherent SPL distribution in the case of bending panel.",

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AB - Several types of implementation of panel loudspeakers, for example, distributed mode loudspeaker(DML), are proposed. The diaphragm of DML is thought as behave like a bending plate. The diaphragm of an electrostatic loudspeaker is thought move as a rigid plate. What is the difference of an acoustical sound field generation feature with each implementation ? In this paper, we used models of same dimensional rectangular panel. One is a rigid diaphragm. Another is a bending panel that has an actuator in the center of it. We made simulations of directivity and sound pressure distribution in a rectangular room. We could show less coherent SPL distribution in the case of bending panel.

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Modal analysis and sound field simulation of vibration panels in a free sound field and in a rectangular enclosure

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