Video Lecture Notes:                                                                                                                        Main Page

• Relation between the actual frequency, normalized frequency and the DFT index
• DFT computation of an anti-causal sequence - Reversed Version
• Effect of low-pass filtering on data-Part one
• Effect of high-pass filter on discrete-time data
• Convolution of two discrete-time signals using DFT - Part-I  Part-II
• Relation between CTFT (Continuous-time Fourier Transform), DTFT (Discrete Time Fourier Transform) and Discrete Fourier Transform (DFT) using the Riemann Sum approximation to the CTFT
• Low-pass filtering a discrete-time signal - Part -II
• Median filtering example
• Parseval's Relation for DFT - Part-I  Part-II
• What does the k-th DFT (or FFT) coefficient correspond to - PartI  Part-II
• Circular Convolution Video  (Notes)
• CTFT of Cosine Video  (Notes)