DSP Central

dspGuru provides a wide variety of DSP information to help you master the complex domain of Digital Signal Processing, including:

  • FAQs:  At last, Frequently Asked Questions about DSP meet up with Rarely Given Answers, in a friendly, tutorial format.
  • Tutorials: Primary DSP subjects made simple.
  • HowTos: Here we divulge the secret "Tribal Knowledge" of DSP - stuff that experienced DSP'ers know, but isn't in the textbooks. (Don't tell anybody!)
  • Tricks:  Algorithmic and design tricks that make your life in DSP a little easier.
  • Books:  Which of a zillion DSP books should you add to your personal DSP library?  To help you choose, we provide listings of DSP books organized in a wide variety of ways.
  • Links:  There's gotta be something we haven't covered, so we provide a comprehensive set of links to other DSP resources on the Internet.
  • Reference: Handy information to refer to.
  • comp.dsp: Got questions? Usenet's DSP newsgroup has answers.

dspGuru is and always has been a community effort.  Here's how you can help:

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PowerWalkers (TM): Saving the Environment One Step at a Time

Submitted by Grant R. Griffin on Sun, 07/11/2010 - 12:16

Readers of my previous blog entry "What Light Through Yonder Flashlight Shakes?" have asked for details about the science project that caused my son and I to look into shake flashlights in the first place. Here goes.

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Papa's Got a Brand New Brag

Submitted by Grant R. Griffin on Sun, 05/09/2010 - 17:52

I bought a new toy the other day, a netbook.  It's an "ASUS Eee PC Seashell 1005HA-PU17-BU Royal Blue".  Although I recently confessed to being a late adopter of flat-screen TVs (actually, I still don't have one), I think I can claim to be a bit of an early adopter of netbooks since I don't know anybody who has one.  Here are my initial impressions.

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To Early-Adopt or Not to Early-Adopt: That is the Question

Submitted by Grant R. Griffin on Sat, 04/03/2010 - 09:18

Fred Allen once said "Imitation is the sincerest form of television."  With 3D becoming increasingly mainstream in movie theatres, television inevitably must follow.

The technology is here.  Flatscreen TVs long have had oversampled frame rates, LCD shutter glasses are a simpler technology than the LCD television you might watch through them, and Blu-Ray players hold oodles of data.  In fact, I'm surprised 3D TV didn't come out sooner.

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What Light Through Yonder Flashlight Shakes?

Submitted by Grant R. Griffin on Sun, 01/31/2010 - 09:26

I recently helped a lad put together a school science project that involved the idea of using "shake flashlights" as a power source.  The idea seemed like a good one when he first proposed it.  But when we began to implement it we immediately ran into a quite unexpected problem: it's impossible to find shake flashlights in retail stores.

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Of all the Gall

Submitted by Grant R. Griffin on Wed, 01/27/2010 - 21:09

I ran into Gall's Law recently, which states: "A complex system that works is invariably found to have evolved from a simple system that worked. The inverse proposition also appears to be true: A complex system designed from scratch never works and cannot be made to work. You have to start over, beginning with a working simple system."

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Ten Years of dspGuru

Submitted by Grant R. Griffin on Wed, 04/08/2009 - 20:29

 

Well, dspGuru will be ten years old in a few days. It hardly seems possible. It's interesting to look back on how it turned out relative to what I was hoping for when I launched it. dspGuru has mostly been a success. At the most basic level, it scratched an itch that I had - and still have - to spread the gospel of DSP. Of all the missions one might adopt to make the world a better place, helping folks learn DSP pales in comparison to ending polio and squashing sugar ants. But we all need a mission.

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