噪声与振动控制2011，Vol.32Issue(6)：143-146,4.DOI:10.3969/j.issn.1006-1355-2011.05.032
某车车内噪声信号的测试与分析
Measurement and Analysis of Interior Noise of Car
摘要
Abstract
The interior noise of a car in different conditions is tested according to our national standards. Using Fourier transform, the spectrum analysis is done for the signals and the critical frequency is obtained. It is found that in rapidly accelerating conditions, Fourier transform can only yield overall trends of the interior noise variation, and the detailed information cannot be obtained. Then, the "adaptive changes" time-frequency window structure of wavelet transform is used to gain the details of the signals and more frequency information.关键词
声学/车内噪声:噪声测试/傅立叶变换/小波分析Key words
acoustics / car interior noise/ noise test/ Fourier transform / wavelet analysis分类
交通工程引用本文复制引用
江俊,陈剑..某车车内噪声信号的测试与分析[J].噪声与振动控制,2011,32(6):143-146,4.基金项目
国家863重大科技专项—轿车集成开发先进技术(2006AA110101) （2006AA110101）
