南京工学院
纸质出版:1985
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[1]何振亚,吴镇扬,杨振鹏.运用CSD码的可变特性数字滤波器[J].电子学报,1985(06):120-122.
He Zhen-ya, Wu Zhen-yang, Yang Zhen-pen. A Digital Filter with Changeable Characteristic Using CSD Code[J]. Acta Electronica Sinica, 1985, (6): 120-122.
本文给出了一种以Z-80为中心的IIR数字滤波器系统。借助键盘输入十进制滤波系数即可改变其滤波特性。文中简要地论述了将滤波系数转换为CSD码以及使系统处理速率得以提高等关键技术的实现方法。
An IIR digital filter is considered. Its filter characteristic can be changed according to the users’ requirement. A Canonical Signed Digit Code (CSD code) is employed in the filter. A Z-80 microprocessor is used for controlling the filter work and converting the coefficients in the BCD code into the CSD code. The Direct Data Transmission method and a Fast Shift Matrix structured by multiplexers are adapted to speed filtering rate.
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