A garage sale for your mind

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Curtis Jones

God-fearing, mountain-climbing, software engineer.

📍 Atlanta, GA https://curtisjones.us

Guns and Cats

I finally had the chance to test out my new Beretta 90two .40 S&W, and it was everything I had hoped for. For not having done any shooting in several years, I was pleased at being able to hit a person-sized area at one hundred yards. I was

A Naming Fit of Stupidity

Beretta used to make this beautiful .40 caliber handgun called the 96 Brigadier (specifically the Inox). And it was beautiful. And then one day I found that they had completely discontinued the 96 series. No explanation. Meanwhile, their law-enforcement-loves-em 9mm 92 series continued on. And then last week I found

The Mad Hatter

Johnny Depp. Anne Hathaway. Alice in Wonderland is going to be great. No, not this one. This one. Ha ha ha.

Spectrum Analyzer [005]

I spent the better part of a week working on demodulation - but I haven't produced any sound yet. It's difficult to get straight, concise and understandable information on exactly how to filter and demodulate. So, I went back to working on the UI. You can

Spectrum Analyzer [004]

I put AM demodulation on hold for a moment and moved some code around so that I can better support demodulation later. In the new system (there's no point in dwelling on the particulars of the old system), the device read thread passes a newly received block of

Spectrum Analyzer [003]

My original, ill-conceived notion for drawing a waterfall display was to do a bunch of CGContextFillRect() each drawing a 1x1 rectangle. 1024 pixels wide * 250 pixels tall * redraw-rate = millions of 1x1 rectangles per second. Yeah, that didn't work at all. So, I made a second internal representation of

Spectrum Analyzer [002]

I've had current (red line), average (green fill) and max (blue fill) correctly drawing for a while, but it's taken some time to get the scale (in dBm) right. And I'm still not accounting for gain associated with the window function and the fft.

Operator -->

#include <stdlib.h> int main (int argc, char **argv) { int x = 10; while (x --> 0) printf("%d\n", x); return 0; }

The Spectral Man-a-lizer

I was asked what I am currently working on. "A spectrum analyzer," I replied. Blank stare. That's not uncommon though so I didn't think anything of it. Then there was a follow-up question: "A spectral man-a-lizer??" It was my turn for the

Imeem

Not that there is a want of reasons to dislike MySpace, but now they've gone and bought Imeem and promptly shut it down. Thanks for that. When will MySpace die? -- I had to share the gym today with like three other people. I know, you're

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