A Windows-Based Digital Filter Design

Yüksel Özbay; Bekir Karlik; A. Resit Kavsaoglu

doi:10.3390/mca8030287

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Article

1 December 2003

A Windows-Based Digital Filter Design

and

Selcuk University, Department of Electrical & Electronic Engineering, Turkey

University of Bahrain, Department of Computer Engineering, Bahrain

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Math. Comput. Appl.2003, 8(3), 287-294;https://doi.org/10.3390/mca8030287

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Abstract

This study aims to describe a general digital filter, practically for Windows’ users. For this purpose. an I/O interfacing circuits base on PIC16F877 was designed to receive analog signal into the PC and return filtered signals. This I/O module was then communicated with PC using parallel port protocol with EPP mode, and a digital filter program was introduced using C++. Various filters; such as LPF, HPF, BPF, and BSF were designed using the method of frequency transformation on normalized Butterworth and Chebyshev analog filters. The grades of the designed filters range from n=1 to n=8. Using this application the proposed windows-based digital filter design worked better and faster.

Keywords:

Analog filter; digital filter; filter design; PIC; C++

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