Research on the High-power Directional Acoustic Transducer

DOI

10.2991/iceep-18.2018.272How to use a DOI?

Keywords

Directional audio, Transducer, Impedance analysis, Class-D amplifier, Directivity pattern.

Abstract

Through studying how to affect acoustic directivity with MATLAB software, it show that selection of a relatively larger surface of the transducer and a relatively closer transducer interval will be more preferable for directivity. While an array which possess more array element number and whose frequency of the drive signal can be as large as possible in a range, directivity will be more preferable. On the other hand, when the structure of the sound radiating surface of the transducer or array layout is symmetrical, the corresponding directivity pattern will be symmetrical. At a frequency of 10kHz, the individual rare earth magnetostrictive transducers its first point of the simulation carried out before the test. Sounding board with aluminum by the method used to improve the sound source diameter. With the sound plate diameter incrementing, the smaller the angle of the directivity. The beam width of the 3×3 array is about at 23kHz, and the directivity acute angle is about 10°, with a sounding board by the method used to improve their the diameter of the sound source, so as to realize the sound has directivity is feasible.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Guo Zhu Zhao
AU  - You Jun Chen
PY  - 2018/09
DA  - 2018/09
TI  - Research on the High-power Directional Acoustic Transducer
BT  - Proceedings of the 2018 7th International Conference on Energy and Environmental Protection (ICEEP 2018)
PB  - Atlantis Press
SP  - 1527
EP  - 1530
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceep-18.2018.272
DO  - 10.2991/iceep-18.2018.272
ID  - Zhao2018/09
ER  -