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Mathematical and Computational Applications is published by MDPI from Volume 21 Issue 1 (2016). Articles in this Issue were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence. Articles are hosted by MDPI on as a courtesy and upon agreement with the previous journal publisher.
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Math. Comput. Appl. 2003, 8(3), 287-294;

A Windows-Based Digital Filter Design

Selcuk University, Department of Electrical & Electronic Engineering, Turkey
University of Bahrain, Department of Computer Engineering, Bahrain
Authors to whom correspondence should be addressed.
Published: 1 December 2003
PDF [2658 KB, uploaded 31 March 2016]


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++ Analog filter; digital filter; filter design; PIC; C++
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Özbay, Y.; Karlik, B.; Kavsaoglu, A.R. A Windows-Based Digital Filter Design. Math. Comput. Appl. 2003, 8, 287-294.

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