【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.更多还原

【Abstract】 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.更多还原