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2. 发明申请

US20150297141A1 METHOD FOR IMPROVING THE SIGNAL TO NOISE RATIO OF A WAVE FORM 审中-公开
标题翻译：将信号改进到波形的噪声比的方法
公开(公告)号：US20150297141A1
公开(公告)日：2015-10-22
申请号：US14257110
申请日：2014-04-21
申请人： United States Army Research Laboratory ATTN:RDRL-LOC-I
发明人： David Siegel , Canh Ly , Troy Lau , William D. Hairston
IPC分类号： A61B5/00 , A61B5/0476
CPC分类号： A61B5/7203 , A61B5/0476 , A61B5/726 , G06K9/00516
摘要： A method for improving the signal to noise ratio of an EEG signal in which a wavelet packet decomposition having a plurality of levels is first applied to a time slice of the EEG signal. A default signal is set to the first wavelet packet and a default peak response is then calculated for the first wavelet node. An update signal is set to the default signal combined with another of the wavelet nodes and an update peak response signal is then calculated of the update signal. If the update peak response signal exceeds the default peak response, the default peak response is set equal to the update peak response and the default signal is set equal to the update signal. Otherwise, the value of the current node is set to zero which effectively eliminates the signal data of the current wavelet node. These steps are reiterated for all of the wavelet nodes and, thereafter, a composite waveform of the EEG signal is reconstructed from the non-zero wavelet nodes.
摘要翻译：一种用于提高EEG信号的信噪比的方法，其中首先将具有多个电平的小波包分解应用于EEG信号的时间片。将默认信号设置为第一个小波包，然后计算第一个小波节点的默认峰值响应。将更新信号设置为与另一个小波节点组合的默认信号，然后计算更新信号。如果更新峰值响应信号超过默认峰值响应，则将默认峰值响应设置为等于更新峰值响应，并将默认信号设置为等于更新信号。否则，当前节点的值被设置为零，这有效地消除了当前小波节点的信号数据。对于所有小波节点重复这些步骤，此后，从非零小波节点重建EEG信号的复合波形。

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