摘要
就自行设计的分立推挽气流式和低频调制电声转换式两种新型次声产生装置所产生的信号进行了对比分析,两种机制产生的信号强度均在60 dB以上,且分立式产生的次声波空间分布较均匀;低频电声式产生的次声强度随着次声频率的增加有所提升,谐波分量较少因而效率高,且次声产生机制简便易行;两种方式的次声装置都适合于实验室研究用。
This paper analyzes and comprises the infrasound generated by two kinds of infrasound genera- tors. One generator is separated pull-push infrasound generator which designed by ourselves and the other is using low frequency electro acoustic modulator. The results shows that, both infrasound levels are above 60dB; the infrasound generated by separated pull-push flow distributes more uniform in space; the intensi- ty of infrasound generated by the other method increases as the infrasound frequency increases, and has less harmonic and more efficient. Both generators are convenient in laboratory.
出处
《四川兵工学报》
CAS
2014年第10期133-137,共5页
Journal of Sichuan Ordnance
基金
国防科技大学科研项目"新型可控次声产生器及其相关物理"(JC12-02-11)
关键词
分立推挽气流式
低频调制电声式
次声
separated pull-push flow
low frequency electro acoustic modulation
infrasound
