双传声器法测量斜入射吸声系数研究

A study on the measurement of sound absorption coefficient at oblique incidence by the use of two-microphone technique

本文从理论和实验两方面研究了双传声器法测量斜入射吸声系数时，双传声器间距、双传声器离材料表面距离、材料面积大小等因素对测量结果的影响．

The measurement of sound absorption coefficient at oblique incidence by the use of two-microphone technique is theoretically and experimentally studied. Firstly, how to choose a suitable distance between the microphones is examined. Then the effects of the distance from the microphones to the material surface and the size of the material on the measured results are discussed.