| 肠鸣音的小波域滤波方法 |
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| 引用本文： | 张细政,芮元庆,王卫雄.肠鸣音的小波域滤波方法[J].湖南工程学院学报(自然科学版),2011,21(1):51-54. |
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| 作者姓名： | 张细政 芮元庆 王卫雄 |
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| 作者单位： | 1. 湖南工程学院,计算机与通信学院,湘潭,411104
2. 华南理工大学,理学院,广州,510641 |
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| 基金项目： | 湖南省自然科学基金资助项目，2010年湖南省大学生研究性学习与创新性计划资助项目 |
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| 摘 要： | 肠鸣音信号是人体重要的生理信号之一,对其进行分析可以研究胃肠运动生理学,进而对许多胃肠功能紊乱疾病进行直接有效诊断.临床检测到的肠鸣音信号具有信号弱、噪声多、复杂且高度不平稳等特点,本文引入小波滤波方法,对采集到的原始信号采用不同的阚值去噪方法去噪,在MATLAB环境下进行仿真,分析了各自的滤波效果,总结出各种阚值去噪...
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| 关 键 词： | 肠鸣音 小波域滤波 小波变换 阈值 |
The Filtering Methods of Bowel Sounds in Wavelet Domain |
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| ZHANG Xi-zheng,RUI Yuan-qing,WANG Wei-xiong.The Filtering Methods of Bowel Sounds in Wavelet Domain[J].Journal of Hunan Institute of Engineering(Natural Science Edition),2011,21(1):51-54. |
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| Authors: | ZHANG Xi-zheng RUI Yuan-qing WANG Wei-xiong |
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| Institution: | ZHANG Xi-zheng1,RUI Yuan-qing2,WANG Wei-xiong1(1.School of Computer and Communication,Hunan Institute of Engineering,Xiangtan 411104,China,2.School of Physics,South China University of Technology,Guangzhou 510641,China) |
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| Abstract: | Bowel sounds signal(BS) is one of the important human physiological signals,analysis of the BS signal can then study gastrointestinal physiology and implement direct and effective diagnosis of gastrointestinal disorders.As the bowel sounds detected in clinical are always weak,containing many noise,complex and highly non-stationary,conventional denoising methods are often ineffective or poeerless.In this paper,wavelet filtering method is adopted to denoise the BS signal.By using different threshold based met... |
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| Keywords: | bowel sounds filtering in the wavelet domain wavelet transform threshold |
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