T&L Publications

Having done a lot of speech synthesis I'd suggest 8-bit at 10Ks/s is a good trade off, with 6.5 seconds per 64KB. I think I tried A/Mu law on 4-bits to get 11 sec per 64KB but got better results by normalizing 8 bits and then dumping the lower 4. Using the Roman Black method you get surprisingly goo...

Fifteen minutes? ISD gives around 15 seconds or 2 minutes last I looked. How about using an old flash card, like a 16MB, and program a PIC to record on it? Here is a PIC project that emulates an obsolete Text To Speech Synthesizer. http://home.alphalink.com.au/~derekw/pictalker/main.htm It can say a...

Look! Stevech came here on 6/6/6 to give us the Mark Of The Beast. Dogs, who's your master? Red states, show me your papers! Identify yourself! Open your bibles to Revelation 13 and get your free real estate in Yellowstone National Park. This isn't personal. It's a joke, but like many jokes, not too...

having worked with RFID in my job (several kinds), the general case is that really cheap RFID tags (teeny capsules or labels) have a read range of 1-4 inches. The amount of RF used to read them is quite small and the emissions are very, very brief. But the lunatic paranoids can still holler. Let's ...

once we had mice and... I made a solenoid hold up the door to a clear plastic box, which would drop it when the mouse ran across a barely touching wire powering the solenoid and magnets held the door closed. Behind the wire was a fortune-cookie or noodles. This trap usually caught them alive but occ...

No, not really. DSP is digital signal processing, usually with special fast hard math chips, not just sampling. FFT is Fast Fourier Transform. By magic and advanced math it just works. FFT is used very often in DSP. It is hard to be doing one without even knowing the other. What it does is take a wa...

According to the above article, The areas where the ethanol plants are planned is, or should be, near the Great Lakes. Of course the aquifers should not be "wasted". Neither should the water be polluted and released in the process, but used again. As the ethanol is used as motor fuel, 2 CO...

The most obvious simple DSP process that is interesting and fits in same bandwidth is
to FFT , change the order of the "bins", and IFFT out.

That will probably get you an A+ without attracting black helicopters.

I went to the fuel less flight site VIRAND posted about. Okay, let me get this worked out as it is giving me a headache. A proprietary low-boiling-point-liquid is vaporized into a low density lighter-than-air lifting gas using the heat in the air near the surface. This creates buoyancy that allows ...

Mod a wireless video camera ... or at least an old TV tuner and "RF video modulator". Analog television systems use more real bandwidth than any other common signal. It's easy to get full 1Mbps without overhead from additional layers of abstraction, just do your own error checking on the r...

Last time I changed a light bulb was when they started using LEDs in traffic signals and gave me some of the old fashioned bulbs that they used to use, which for obvious reasons must be made to not require frequent changing. That was a few years ago. Light bulbs that need to be changed are a ripoff ...

Common TTL logic if you can't program a PIC:
74169 or 74193 chip counts up and down in binary and can be connected to the buttons.
74154 decodes binary to up to 16 levels with a separate pin for each resistor and LED.

Because it would have put the terrorists out of business?

Take a look at this too.
http://www.fuellessflight.com/

And this! The filling station could be a windmill.
http://www.theaircar.com/

It is an urban legend that you can get in trouble for getting power from coils. If you get enough power to light up a light bulb, you probably would get cancer if you didn't use it. Think about it. If you live under power lines and people get shocks from your fence, and you could solve the problem w...