消声室的声学设计

Acoustic Design for Anechoic Room

消声室是声学专业的实验室用房,它在电声学产品的声学性能检测和机电设备的噪声声功率级测量中得到广泛的应用。消声室的设计,应在遵循声学原理的基础上,处理好使用要求与实验室周围的声环境状况以及建设造价等方面的关系问题。文中结合消声室建设的工程实例,介绍了消声室设计中有关体积、体型、吸声、隔声等方面的技术问题。测量表明,建成的消声室在声学方面的各项指标均满足或优于国家标准的要求。

Anechoic room is a special laboratory for acoustics testing. It is widely applied for the testing of acoustic properties of electro-acoustic products and for the measurement of the sound power levels of noise sources. In the design of anechoic room, the acoustic principle should be obeyed, the requirement of application, the acoustic environment and the cost of construction should be considered. Taking an anechoic room construction as an example, some technical problems such as volume, type, sound absorption, sound insulation etc are discussed. An acoustic measurement is carried out after the anechoic room was completed. The measurement data shows that all the acoustic indexes are satisfactory or even better than those given in national standard.