[01] Ahammodullah Hasan, Department of Mathematics, Faculty of Applied Science and Technology, Islamic University, Kushtia, Bangladesh. [02] Mohammad Al-Amin Meia, Department of Mathematics, Government Adamjeenagar Merchant Worker (M. W) College, Narayanganj, Bangladesh. [03] Mohammad Owaziuddin Mostofa, Department of Civil Engineering, Southern University Bangladesh, Chattogram, Bangladesh.

The Fourier series, the founding principle behind the field of Fourier analysis, is an infinite expansion of function in terms sine’s and cosines. Fourier transform provides a continuous complex frequency of a function. It is useful in the study of frequency response of a filter, solution PDE, Discrete Fourier transform and FFT in the signals analysis. The advent of Fourier transformation method has greatly extended our ability to implement Fourier methods on digital multimedia visualization system. It covers the mathematical foundations of Digital signal processing (DSP), classical sound, synthesis algorithms and multi-time frequency domain analysis associated musical sound. In this paper, we are analysis of square wave in terms of Fourier component, may occur in electric circuits designed to handle sharply rising pulses and how to convert analog to digital system by using Fourier transform and its applications in electronics and digital multimedia visualization signal process of communication system.

Fourier Transform (FT), Fourier Sine and Cosine Transform, Inverse Fourier Transform, Inverse Fast Fourier Transform, Electric Circuit, Frequency, Multimedia Visualization, Digital Signal Process

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