期刊
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
卷 138, 期 4, 页码 EL424-EL428出版社
ACOUSTICAL SOC AMER AMER INST PHYSICS
DOI: 10.1121/1.4934550
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资金
- Japan Society for the Promotion of Science [26630080, 26630102]
- Grants-in-Aid for Scientific Research [26630080, 26630102] Funding Source: KAKEN
Although indoor acoustic characteristics should ideally be assessed by measuring the reverberation time using a point sound source, a regular polyhedron loudspeaker, which has multiple loudspeakers on a chassis, is typically used. However, such a configuration is not a point sound source if the size of the loudspeaker is large relative to the target sound field. This study investigates a small lightweight loudspeaker using a dielectric elastomer actuator vibrating in the breathing mode (the pulsating mode such as the expansion and contraction of a balloon). Acoustic testing with regard to repeatability, sound pressure, vibration mode profiles, and acoustic radiation patterns indicate that dielectric elastomer loudspeakers may be feasible. (C) 2015 Acoustical Society of America
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