摘要
将以小波变换为理论基础的小波降噪技术应用于汽车发动机降噪,对含噪信号进行分解得到各层的小波系数并用阈值降噪法对其进行处理,去除噪声信号并对原信号进行重构。通过计算机仿真和结果分析对该方法进行验证,表明小波降噪技术在汽车发动机降噪中的可行性。
The wavelet noise reduction technology based on wavelet transform is applied to automobile engine noise reduction,the noisy signal is decomposed,the wavelet coefficient is processed by threshold noise reduction method,the noise signal is removed and the original signal is reconstructed.The method is verified by computer simulation and result analysis,which shows the feasibility of wavelet denoising technology in automobile engine noise reduction.
作者
徐一帆
XU Yi-fan(Shenyang Ligong University,Shenyang 110159,China)
出处
《内燃机与配件》
2019年第14期14-15,共2页
Internal Combustion Engine & Parts
关键词
小波变换
小波降噪
阈值处理
发动机
Wavelet Transform
Wavelet De-noising
Threshold Processing
Engine
