室内脉冲声场中声强的测量研究  

Research on intensity measurement of room impulse response

作　　者：赵跃英[1] 盛胜我[1] 赵松龄[1] 

机构地区：[1]同济大学声学所,上海200092

出　　处：《声学学报》2008年第2期178-183,共6页Acta Acustica

基　　金：国家自然科学基金(10574100)

摘　　要：采用多次重复发射的声源配合装置在缓慢转动平台上的接收传声器所组成的测量系统(简称为RRS),它等效于多个完全匹配的传声器组成的圆型阵列。文中着重阐述了借助此技术测量房间内脉冲声场中声强的时间与空间分布特性。阐明了以RRS测量入射脉冲声强的理论基础,分别对离散的脉冲声场及扩散声场提出了测量声强的定量关系式,对实验结果及应用作了分析与讨论。A measurement system is composed with a repeatable inspiriting sound source associated with a microphone fixed on the slowly rotating platform （RRS）, which is equivalent to a round microphone array composed of many perfectly matched microphones. Based upon this system the theoretical analysis of sound intensity in the field consisted of direct impulse and reflection is presented. Therefore not only time characteristic but also spatial characteristic of room impulse response can be obtained. Then typical applications has been analyzed and discussed in this paper

关 键 词：脉冲声场 测量系统 声强 室内 空间分布特性 定量关系式 技术测量 扩散声场 

分 类 号：O422.2[理学—声学]