Useful Tips and Tricks on Digital Data Processing with Discrete Fourier Transform

Abstract

The main focus of this study is to explore the basics on the discrete Fourier transform (DFT) strongly. This article exemplifies few important fundamental concepts behind DFT with a hands-on approach. The understanding signal frequencies in terms of the sampling frequency (Fs) of the discrete-time system with many examples are detailed with interestingly. This one will establish a thorough knowledge to design digital filters appropriately. Also, a few more tips and tricks such as the DFT of the repeated sequence and spectral leakage are demonstrated with examples clearly using the Matlab R2016b tool. The computer-based learning style helps the student community a lot to apply and explore their mind in recent and innovative digital signal processing (DSP) applications. This kind of study motivates student group with self-learning and hence reducing the teaching load.