In the paper, the calculating method of signal extraction filterpass-band according to the paper-counting speed and the utility circuit of separating strong interference in pass-band are given.
并针对点钞速度给出了信号提取滤波器通频带的计算方法，以及在带内分离强干扰的实用电路。
2
This paper design a 4-step bandpass digital filter.
本文设计了一个4阶带通数字滤波器。
3
A pre-amp component, such as a band-passfilter (32), causes linear distortion.