Blog Archives

Nyquist, Shannon and the information carrying capacity of signals

This tutorial covers the discussion of Nyquist capacity equation. This equation is often used to develop a capacity number for digital signals. Nyquist equation was later modified to include the multi-signalling factor, M.  Nyquist capacity is often a achievable starting

Posted in Digital Communications, fading channels, Signal processing

This woman in tech and all that

In 1964, I was a young girl living in Varanasi, India. My father owned a business in the town, across from a movie studio called Prakash Talkies. The movie place always had gigantic posters of garishly pained actresses with gigantic

Posted in Uncategorized

Announcing release of our book – Intuitive Guide to Fourier Analysis and Spectral Estimation

Announcing publication of The Intuitive Guide to Fourier Analysis and Spectral Estimation with Matlab Charan Langton and Victor Levin For science and engineering students and practicing engineers Sample Chapters Available at as color eBook to be read on your

Posted in DFT, Engineering books, Fourier Transform Tutorial, Signal processing

A well done book on General DSP by Richard Tervo

One can get a pretty good feeling about a book by just flipping a few pages. And this book passed the flip test immediately! First of all, I want to say that I love this book and the way the

Posted in Uncategorized

Intuitive Guide to Fourier Analysis by Charan Langton and Victor Levin

I am working on a book with the imaginative and creative title of “Intuitive Guide to Fourier Analysis”. This is an old topic, but forever confounding in all its myriad forms. The book will have some of my DFT, FFT

Posted in DFT, Digital Communications, Engineering books, Fourier Transform Tutorial

Why I Wrote My “Understanding Digital Signal Processing” Book

Why I Wrote My “Understanding Digital Signal Processing” Book by Richard Lyons Some time ago Charan asked me what events led me to write my “Understanding Digital Signal Processing” book? For Charan, and in case anyone else is interested, here’s

Posted in Uncategorized

The Little Fruit Market

This blog post is by my friend Rick Lyons. The Little Fruit Market by Richard (Rick) Lyons There used to be a fruit market located at 391 San Antonio Road in Mountain View, California. In the 1990’s I worked part

Posted in Digital Communications, Signal processing, Silicon Valley, Transistors

Beat Notes: An Interesting Observation

This post is by Richard Lyons, the author of the superb book “Understanding Digital Signal Processing” – Charan Langton _________________________ Some weeks ago a friend of mine, a long time radio engineer as well as a piano player, called and

Posted in DFT, Digital Communications, Signal processing

Digital communications tutorial links

I recently changed to this WordPress format for Although the functionality is great, the old links which so many schools, colleges had no longer work. The site has fallen off totally from Google, probably because none of the old

Posted in Digital Communications

DTFT, DFT Tutorial added

I have added Chapter 5 which covers DFT and DTFT and a little bit about FFT.  The tutorial has most of the Matlab code used to generate the graphs. In the links page, I have also added the sites I

Posted in DFT
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