摘要
利用声强法对某汽车发动机进行噪声源识别实验,并对测得的噪声信号进行频谱分析,最终确定该发动机的主要噪声源及其声功率级和噪声特性,为衰减该类型的发动机噪声提供指导。
The sound intensity technique is used to conduct noise source identification experiment on a vehicle engine and frequency spectrum analysis on noise signals measured.In the end,the main noise sources and their sound power level and noise features of that engine are determined,providing a guide for the noise attenuation of that type of engine.
出处
《汽车工程》
EI
CSCD
北大核心
2014年第1期48-50,106,共4页
Automotive Engineering
关键词
发动机
噪声源识别
声强法
vehicle engine
noise source identification
sound intensity technique
