加速度对传声器影响的逆用分贝叠加修正  

Correction of Acceleration Effect on Microphone Based on Inverse db Superposition

作　　者：战丰丰[1] 鲍爱达[1] 郭涛[1] 

机构地区：[1]电子测试技术国家重点实验室仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《探测与控制学报》2010年第2期60-63,共4页Journal of Detection & Control

基　　金：国家自然科学基金重点项目资助(50535030)

摘　　要：传声器工作在噪声信号掺杂振动g值的环境中,影响传声器测量噪声信号的精度。为剔除振动影响,提出用实验方法模拟飞行器飞行过程的振动环境,测量g值对传声器的影响,拟合加速度声压级直线,根据得到的直线,逆用声学中分贝级叠加原理,修正了传声器测量的噪声信号,提高了传声器测试纯噪声信号的精度。The accuracy of noise signal measurement by microphone is affected due to the working environment in which noise signal is doped with vibration G. In order to eliminate vibration effect, vibration environ- ment is simulated, the effect of vibration G on microphone is measured and the straight line of acceleration sound pressure level is fitted. Then according to the fitted straight line, the noise signal measured by microphone is corrected based on inverse db overlapping, improving the measurement accuracy of pure noise signal by microphone.

关 键 词：压电传声器 逆用声叠加原理 声压加速度修正 

分 类 号：TB523[理学—物理]