| 小波降噪对汽车发动机噪声信号的处理方法研究 |
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| 引用本文： | 徐一帆.小波降噪对汽车发动机噪声信号的处理方法研究[J].内燃机与配件,2019(14):14-15. |
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| 作者姓名： | 徐一帆 |
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| 作者单位： | 沈阳理工大学 |
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| 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。
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| 关 键 词： | 小波变换 小波降噪 阈值处理 发动机 |
Research on Processing Method of Automobile Engine Noise Signal by Wavelet Denoising |
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| XU Yi-fan.Research on Processing Method of Automobile Engine Noise Signal by Wavelet Denoising[J].Internal Combustion Engine & Parts,2019(14):14-15. |
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| Authors: | XU Yi-fan |
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| Affiliation: | (Shenyang Ligong University,Shenyang 110159,China) |
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| Abstract: | 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. |
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| Keywords: | Wavelet Transform Wavelet De-noising Threshold Processing Engine |
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