文章摘要
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
收发合置水声管中使用宽带脉冲的吸声测量方案
An improvement scheme of broadband sound absorption measurement in water-filled impedance tube with monostatic transducer
投稿时间:2012-11-19  修订日期:2013-02-25
DOI:10.3969/j.issn1000-3630.2014.03.006
中文关键词: 收发合置换能器  脉冲声  宽带测试
英文关键词: monostatic transducer  impulsive sound  measurement in broadband frequency range
基金项目:国家自然科学基金资助项目(11204242)
作者单位E-mail
赵渊博 西北工业大学航海学院, 陕西西安 710072 windin9th@sina.com 
侯宏 西北工业大学航海学院, 陕西西安 710072  
孙亮 西北工业大学航海学院, 陕西西安 710072  
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中文摘要:
      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。
英文摘要:
      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-filled 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 explained and a test example is shown.
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