基于小波包的胃电信号消噪处理的研究  

Noise elimination of EGG based on wavelet packet

作　　者：裘国华[1] 申屠南瑛[1] 夏哲雷[1] 金宁[1] 刘大健[1] 

机构地区：[1]中国计量学院信息工程学院,浙江杭州310018

出　　处：《中国计量学院学报》2004年第4期310-313,共4页Journal of China Jiliang University

摘　　要：　对胃电信号进行了快速傅立叶分析、功率谱分析,并重点进行了小波包分析,利用小波包变换所具有的优良时频分析特征和多尺度传播特性,消除胃电信号的噪声,从而提高了胃电信号的信噪比,为胃电信号的深入研究提供了良好的基础.The cuties-recorded EGG is a very faint bioelectricity signal which has been added various noises during its hard acquisition. So noise elimination for EGG is definitely required. To eliminate EGG noise, the FFT and power-frequency analysis is given, while the wavelet packet analysis is applied most successfully. By making full use of the outstanding performance in time-frequency analysis and multi-measurement scanning power, EGG noise has been well removed and its SNR of EGG improved greatly.

关 键 词：电信号 消噪处理 信噪比 时频分析 小波包变换 傅立叶分析 多尺度 特征和 传播特性 小波包分析 

分 类 号：TN911[电子电信—通信与信息系统] O156[电子电信—信息与通信工程]