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收发合置水声管中使用宽带脉冲的吸声测量方案
引用本文:赵渊博,侯宏,孙亮. 收发合置水声管中使用宽带脉冲的吸声测量方案[J]. 声学技术, 2014, 33(3): 213-217
作者姓名:赵渊博  侯宏  孙亮
作者单位:西北工业大学航海学院,陕西西安710072
基金项目:国家自然科学基金资助项目(11204242).
摘    要:水声管是水声材料吸声测量的重要实验平台。对于收发合置换能器水声管系统,目前常用的吸声测量信号是调制正弦信号。为了实现宽带测试,提出了水声管中宽带声脉冲的产生方法,并设计了电子开关延时控制电路。给出了基于收发合置型换能器水声管中宽带吸声测量结果。

关 键 词:收发合置换能器  脉冲声  宽带测试
收稿时间:2012-11-19
修稿时间:2013-02-25

An improvement scheme of broadband sound absorption measurement in water-filled impedance tube with monostatic transducer
ZHAO Yuan-bo,HOU Hong and SUN Liang. An improvement scheme of broadband sound absorption measurement in water-filled impedance tube with monostatic transducer[J]. Technical Acoustics, 2014, 33(3): 213-217
Authors:ZHAO Yuan-bo  HOU Hong  SUN Liang
Affiliation:(College of Marine, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China)
Abstract:Water-filled impedance tube is an important platform for sound absorption measurement. For the test system with monostatic transducer, the common used signal is the pulse modulated sine-wave, which is essentially a single frequency measurement. In order to implement broadband sound absorption measurement, an impulsive sound is generated in water-fried impedance tube, and a time sequence control system is designed for the monostatic transducer generating the impulsive sound and picking up the echo-signal. The principle of sound absorption measurement is ex- plained and a test example is shown.
Keywords:monostatic transducer  impulsive sound  measurement in broadband frequency range
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