| 瞬态诱发耳声发射信号的小波阈值去噪 |
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| 引用本文： | 李训栋,童隆正,王磊,刘兴龙,聂书君,刘博. 瞬态诱发耳声发射信号的小波阈值去噪[J]. 北京生物医学工程, 2006, 25(2): 182-184,203 |
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| 作者姓名： | 李训栋 童隆正 王磊 刘兴龙 聂书君 刘博 |
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| 作者单位： | 首都医科大学生物医学工程学院,北京,100069;首都医科大学附属北京同仁医院耳鼻咽喉头颈外科,北京市耳鼻咽喉科研究所,北京,100730 |
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| 摘 要： | 目的瞬态诱发耳声发射信号是从人的外耳检测到的微弱的音频能量,在测试过程中常混入各种随机噪声,本文尝试对瞬态诱发耳声发射信号进行去噪,以提高信号的信噪比,为进一步的临床应用(如频谱分析)奠定基础.方法小波变换阈值法.选用了sym8小波,软阈值处理方法,阈值选取规则为Minimax法.结果去噪后相关系数加大,信噪比提高.信噪比平均提高约10%.结论小波变换阈值法对TEOAE信号去噪取得了较好的效果.
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| 关 键 词： | 瞬态诱发耳声发射 小波变换阈值去噪 信噪比 |
| 文章编号： | 1002-3208（2006）02-0182-03 |
| 收稿时间： | 2005-12-11 |
| 修稿时间： | 2005-12-11 |
The Method of Wavelet Threshold Denoising Used to Analyze the Transient Evoked Otoacoustic Emissions |
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| LI Xundong,TONG Longzheng,WANG Lei,LIU Xinglong,NIE Shujun,LIU Bo. The Method of Wavelet Threshold Denoising Used to Analyze the Transient Evoked Otoacoustic Emissions[J]. Beijing Biomedical Engineering, 2006, 25(2): 182-184,203 |
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| Authors: | LI Xundong TONG Longzheng WANG Lei LIU Xinglong NIE Shujun LIU Bo |
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| Affiliation: | 1. Biomedical Engineering College, Capital University of Medical Sciences, Beijing 100069; 2. Beijing Tongren Hospital Ahached to Capital University of Medical Sciences, Beijing 100730 |
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| Abstract: | Objective The transient evoked otoacoustic emissions(TEOAE) is a kind of faint signal obtained from the auricle and accompanied by the stochastic noise.The method of denoising is studied to improve the signal-to-noise ratio(SNR) of the TEOAE, that can be laid a foundation for farther clinic application such as spectrum analysis.Method The method of wavelet threshold denoising is used to analyze the TEOAE in this study.We select the sym8 wavelet,softthresholding and the Minimax rule.Result Results show denoising the TEOAE's improves the correlation coefficient and SNR .And the series sym wavelets,softthresholding,Minimax method are better to TEOAE than others.The SNR rises approximate ten pecent.Conclusion The method of wavelet threshold obtains a better effect. |
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| Keywords: | TEOAE wavelet threshold denoising SNR |
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