【摘要】 <正>混响声场声压级是设计高声强混响室和强噪声环境试验的重要参数之一,它主要与高声强混响室的容积,所用声源的声功率有关,本文给出这三个量之间的半经验公式。 声场统计理论指出,上述三个量之间的关系如下:更多还原

【Abstract】 The difference between the SPL value calculated by classical formula and the value measured in high intensity sound reverberation chamber is very large. A quasi-empirical formula based on experimental statistics is presented as Lw=Lp+6.67 log10(V)-Z,Z=8-8.5 where Lw is the acoustic power level in dB with respect to 10-12W, Lp is the sound pressure level in dB with respect to 2x10-5Pa, V is the volume of the reverberation chamber in m3. This formula is featured by unity parameter and easy to use. The volume, sound pressure level and sound source power measurements in twenty-seven reverberation chamber are compared.更多还原