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为了研究微穿孔膜墙面吸声结构和空间吸声体的声学特性,在混响室中对8组墙面吸声体与7组空间吸声体的宽频带吸声系数进行了测量,以探讨吸声体的构造与其声学特性之间的关系.测量数据表明,微穿孔膜墙面吸声构造和空间吸声体具有良好的声学性能.该测量数据可以直接应用于实际声学工程,也可以用来与理论计算进行比较研究.
In order to study the acoustic properties of micro-perforated membrane wall sound-absorbing structure and space sound-absorbing body, the broadband sound-absorbing coefficients of 8 groups of wall sound-absorbing body and 7 groups of space sound-absorbing body were measured in the reverberation room. The relationship between the structure of the sound absorber and its acoustic properties is discussed.The measurement data show that the sound absorption structure of the microperforated film on the wall and the space sound absorber have good acoustic performance.The measurement data can be directly applied to practical acoustic engineering, Used to compare with theoretical calculations.