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对三种厚度的水泥木丝板的吸声性能进行测试,通过实测数据分析了水泥木丝板的降噪系数以及吸声系数频率的关系曲线与厚度、水泥木丝板后的空腔厚度的关系。表明了水泥木丝板厚度的显著变化影响着水泥木丝板降噪系数;水泥木丝板后的空腔厚度的变化对吸声系数频率关系曲线的低频影响明显。
The sound-absorbing properties of three kinds of cement wood board were tested. The curves and thickness of the cement wood board noise reduction coefficient and the sound absorption coefficient frequency were analyzed by the measured data. The cavity thickness of the cement wood board relationship. It is indicated that the significant change of the thickness of cement wood wire affects the noise reduction coefficient of cement wood board. The change of cavity thickness after cement wood board has obvious effect on the low frequency of the curve of sound absorption coefficient.