| 有限非均匀空腔障板对换能器指向性的影响 |
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| 引用本文： | 尹义龙,李俊宝,夏金东,邢建新,吕可佳.有限非均匀空腔障板对换能器指向性的影响[J].应用声学,2011,30(2):124-130. |
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| 作者姓名： | 尹义龙 李俊宝 夏金东 邢建新 吕可佳 |
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| 作者单位： | 1. 中国科学院声学研究所,北京,100190;中国科学院研究生院,北京,100049
2. 中国科学院声学研究所,北京,100190 |
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| 摘 要： | 声障板可以改善换能器的灵敏度和指向性,是换能器及基阵设计中必不可少的声学结构。本文建立了有限空腔障板和非均匀空腔障板的模型。利用射线声学的理论,研究了以上两种障板对换能器指向性的影响,结果表明障板的边缘和障板的厚度变化都会影响换能器的指向性。文章最后给出了部分实验结果,理论结果与实验结果基本相符。
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| 关 键 词： | 有限空腔障板 换能器 指向性 射线声学 |
Influences of finite-sized non-uniform air-backed baffle on transducer directivity |
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| YIN Yilong,LI Junbao,XIA Jindong,XING Jianxin and LV Ke-jia.Influences of finite-sized non-uniform air-backed baffle on transducer directivity[J].Applied Acoustics,2011,30(2):124-130. |
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| Authors: | YIN Yilong LI Junbao XIA Jindong XING Jianxin and LV Ke-jia |
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| Institution: | YIN Yilong,LI Junbao,XIA Jindong,XING Jianxin,L(U) Kejia |
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| Abstract: | Sound baffle which improves the sensitivity and the directivity of a transducer is a useful structure for the transducer design.In the paper,models of the finite air-backed baffle and the non-uniform air-backed baffle are presented.Based on ray theory,the influence of the two kinds of air-backed baffles on the directivity of the transducer is studied.Results show that the edge of the baffle and the changes of the baffle's thickness affect the directivity of the transducer.The comparisons between the theoret... |
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| Keywords: | Finite-sized air-backed baffle Transducer Directivity Ray theory |
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