吸声室性能的评价是通过将测试声源发射声压的空间衰减与理想自由声场或半自由声场中声压的衰减相比较进行的，声压的衰减量与离声源距离的平方成反比。在实际工程中，声场自由空间是鉴定消声室好坏的关键依据。
混响室是声学专业的实验室用房，它在测量声波无规入射时材料的吸声系数和测量噪声源的声功率级中得到了广泛应用。
In the measurement of sound absorption coefficient in random incidence and determination of sound power levels of noise sources, the reverberation room is used very extensively.
车身多层阻尼结构的振动特性及隔吸声特性是影响车室空腔声响应的重要因素。
Vibration characteristics and sound insulation capability of multilayer damping panels are very important factors which dominate acoustic response in the interior of automobile bodies.
吸声材料的吸声特性及其在室内的位置布置是室内声学研究的一个非常重要的部分，目前多是在实验室中进行测量研究。
The absorption properties of sound-absorbing material and its location in the room is a very important part of room acoustics study. The study methods are measured in the laboratory.
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