摘要
消声室自由声场误差的近似计算,是在设计消声室时综合考虑消声室大小、界面吸声系数和测试距离三个因数,来估计与理想自由声场之间可能有的最大偏差的估计。对于纯音信号测试的消声室与噪声信号测试的消声室有不同的估计公式。在几十年设计实践中,说明该近似估算公式是有用的。
The approximate calculation of free field deviation in anechoic room is the probable greatest deviation, using to the design of anechoic room. It synthesizes three essential factors: the dimension of anechoic room, the absorbing coefficient of boundary and measuring distance,and obtained the differential formulae for anechoic room designing of pure tone signal measuring or noise signal measuring.
出处
《电声技术》
2012年第1期4-5,18,共3页
Audio Engineering
关键词
消声室
自由声场
截止频率
anechoic room
free sound field
cutoff frequency