There's not much to say except take a look at the NEWS article I just posted that announces a hand-portable sensor that can enable the user to hear breathing from 50 feet away through a 12 inch concrete wall.
Technology usually takes years to go from concept to product. The RadarScope is a vindiction of the DARPA fast track programs.
I'd like to hear from you, but especially from those who wrote me saying the technology just wouldn't work.
Blog Make a Frequency Plan Tom Burke 17 comments When designing a printed circuit board, you should develop a frequency plan, something that can be easily overlooked. A frequency plan should be one of your first steps ...
Finding out the perceived frequency response of your combined headphone/ear 'system' and compensating for it using parametric equalization can offer some eye-opening benefits. But finding an EQ solution isn't always easy.