| Study of engine noise based on independent component analysis |
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| 作者姓名： | HAO Zhi-yong JIN Yan YANG Chen |
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| 作者单位： | School of Mechanical and Energy Engineering，Zhejiang University，Hangzhou 310027，China |
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| 基金项目： | Project (No. 50575203) supported by the National Natural ScienceFoundation of China |
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| 摘 要： | Independent component analysis was applied to analyze the acoustic signals from diesel engine. First the basic prin-ciple of independent component analysis (ICA) was reviewed. Diesel engine acoustic signal was decomposed into several inde-pendent components (ICs); Fourier transform and continuous wavelet transform (CWT) were applied to analyze the independent components. Different noise sources of the diesel engine were separated, based on the characteristics of different component in time-frequency domain.
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| 关 键 词： | 发动机噪音 声学信号 噪声源识别 独立成分分析 |
| 收稿时间： | 2006-08-19 |
| 修稿时间： | 2007-01-15 |
Study of engine noise based on independent component analysis |
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| HAO Zhi-yong JIN Yan YANG Chen.Study of engine noise based on independent component analysis[J].Journal of Zhejiang University Science,2007,8(5):772-777. |
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| Authors: | Hao Zhi-yong Jin Yan Yang Chen |
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| Institution: | (1) School of Mechanical and Energy Engineering, Zhejiang University, Hangzhou, 310027, China |
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| Abstract: | Independent component analysis was applied to analyze the acoustic signals from diesel engine. First the basic prin-ciple of independent component analysis(ICA) was reviewed. Diesel engine acoustic signal was decomposed into several inde-pendent components(ICs);Fourier transform and continuous wavelet transform(CWT) were applied to analyze the independent components. Different noise sources of the diesel engine were separated,based on the characteristics of different component in time-frequency domain. |
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| Keywords: | Acoustic signals Independent component analysis (ICA) Wavelet transform Noise source identification |
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