December 2005
Intermediate to advanced
475 pages
12h 6m
English
Content preview from Signals and Systems
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SHORT QUESTIONS AND ANSWERS
Q1. What do you mean by Discrete Fourier Transform?
Ans.: We know that the Fourier transform of discrete sequence x(n) is given by
where X(ω) is the continuous function of ω and the range of ω is from − π to + π or 0 to 2π. Since X(ω) is the continuous function of ω, it is not possible to calculate it on a digital computer or a digital signal processor. Hence, it is necessary to calculate it only for discrete values of ω. When Fourier transform is calculated at discrete points, it is called Discrete Fourier Transform (DFT) which is denoted by X(k) and is expressed as
Q2. Give the relationship between the ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.