巴特沃斯低通滤波器的实现方法研究  

Research on Implemental methods of Butterworth Low-Pass Filter

作　　者：赵晓群[1] 张洁[1] 

机构地区：[1]同济大学电子与信息工程学院,上海201804

出　　处：《大连民族学院学报》2013年第1期72-75,共4页Journal of Dalian Nationalities University

摘　　要：从理论上分析巴特沃斯低通滤波器以及基于圆周卷积的设计方法,以截止频率为1k Hz的巴特沃斯低通滤波器为例,给出了一种基于C语言的通用巴特沃斯低通滤波器设计方法。从时间开销和处理时延等方面,与基于Matlab的设计方法进行比较。仿真结果表明:处理时间是基于Matlab的设计方法的1/200。In this article we analyzed theoretically the design methods of Butterworth low - pass filter based on circular convolution. Taken the Butterworth low - pass filter with the cutoff fre- quency 1 k Hz for an example, we present a design method of general Butterworth low - pass fil- ter based on C language. From the time overhead, processing delay and so on, we compare the method based on the C language with the method based on Matlab. Simulation results show that the processing time of the method given in this paper is 1/200 of that of the method based on Matlab.

关 键 词：巴特沃斯滤波器 圆周卷积 C语言 

分 类 号：TN919[电子电信—通信与信息系统]