射声

1

从吸声处理、景噪声、射声控制等方面分析了内燃机试车室与噪声功率测试室兼容的可能性及条件。

This paper , from the view of sound absorption treatment , control of background noise and reflected sound , ect , analyses the possibility and condition of the compatibility of internal combustion engine running room with the room for determining noise power .
2

在测试人射和反射声脉冲而利用FFT计算声反射传递函数时，讨论了反射脉冲序列截取的长短对该材料反射传递函数的影响。

The transfer functions of reflected sound , waves were calculated from the experimental incident and reflected sound pulses by use of FFT . The effects of the pulse series length on the transfer function are discussed .