| 基于小波域多尺度积的心音去噪方法 |
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| 引用本文： | 赵一鸣,王兵,王柏祥,金涛. 基于小波域多尺度积的心音去噪方法[J]. 江南大学学报(自然科学版), 2008, 7(5) |
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| 作者姓名： | 赵一鸣 王兵 王柏祥 金涛 |
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| 作者单位： | 1. 浙江大学,信息科学与工程学院,浙江,杭州,310027
2. 浙江大学,附属第一医院,浙江,杭州,310003 |
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| 摘 要： | 介绍了一种新的心音去噪方法,利用小波域多尺度积的方法定位第1、第2心音在各个心音周期的位置,并利用其持续时间估计有用信号及噪声,达到去噪的效果,避免了通过ECG-Gating在时域提取噪声时的误差.比较信号在处理前后各个频段的频谱变化,结果表明,该方法不仅在效果上比已有方法更好,在计算上也更为便利.
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| 关 键 词： | 心音 多尺度积 心电门控 |
Wavelet Multiscale Product Based Method for Noise Reduction of Heart Sound |
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| ZHAO Yi-ming,WANG Bing,WANG Bai-xiang,JIN Tao. Wavelet Multiscale Product Based Method for Noise Reduction of Heart Sound[J]. Journal of Southern Yangtze University:Natural Science Edition, 2008, 7(5) |
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| Authors: | ZHAO Yi-ming WANG Bing WANG Bai-xiang JIN Tao |
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| Abstract: | The paper presents a new heart sound denoise method,which uses multiscale product to locate the first sound(S1) and second sound(S2) in each heart beat cycle and the durations of S1 and S2 to estimate these signals and the noise,avoiding the undesirable error caused by using ECG-Gating to locate the S1 and S2.By comparing spectrum changes in each frequency segment with other methods,the new methode is shown to be a more robust extraction method,and is a convenience in computing. |
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| Keywords: | heart sound multiscale product ECG-Gating |
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