混响室法测定吸声系数计算误差分析

Analysis on the Error of Calculating the Sound Absorption Coefficient Using the Reverberation Chamber Method

混响室法测定吸声系数常用赛宾公式来计算,在计算时必须分析其误差大小,使吸声系数的测定值更准确(准确的计算最好用艾润公式)。忽略吸声系数数值客观存在的计算误差,是造成混响时间计算与实测值误差的原因之一。

Sabine formula is usually used to calculate the sound absorption coefficient by the method of reverberation chamber. The error must be analyzed to make the sound absorption coefficient more accurate. In addition, Eyring formula is better for the exact calculation. One reason for the error between calculating and measuring values of the reverberation time is that the calculating error is neglected.