A novel DGS lowpass filter is used to purify IF signal.
中频引出通过新颖的DGS低通滤波器滤波后输出.
A simple assembler routine fits a digital lowpass filter into a microcontroller.
一个简单的汇编程序适合于微处理器实现数字低通滤波器.
METHODS: 1 The multi - channel MEG data were preprocessed, such as lowpass filtering and principal component decomposing.
受试者自愿参加.方法: 对脑磁图进行必要的预处理, 如低通滤波和主成分分解.