平稳小波变换和新阈值函数用于心电信号去噪

发布时间：2018-02-08 20:27

本文关键词： 心电信号平稳小波变换阈值函数去噪　出处：《北京邮电大学学报》2017年01期 　论文类型：期刊论文

【摘要】：心电信号采集过程中容易受到基线漂移、工频和肌电等噪声的干扰.为了提高心电信号的信噪比,结合平稳小波变换,在使用小波阈值去噪法去燥过程中,提出一种有别于常用软硬阈值函数的新的阈值函数.通过分析实测数据验证新阈值函数,结果表明,该方法更加有效地抑制了心电信号中混入的基线漂移、工频和肌电噪声,且较好地保留了原始心电信号的特征.
[Abstract]:In order to improve the signal-to-noise ratio of ECG signal, combining with stationary wavelet transform, it is easy to be disturbed by baseline drift, power frequency and electromyography. A new threshold function, which is different from the common soft and hard threshold function, is proposed. The new threshold function is verified by analyzing the measured data. The results show that the proposed method is more effective in suppressing the baseline drift, power frequency and myoelectric noise in ECG signals. The characteristics of the original ECG signal are well preserved.
【作者单位】：北京邮电大学电子工程学院;
【分类号】：TN911.4

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