I am an amateur entomologist (and complete Noob to the audio world) and would like to use an array of several microphones to triangulate and map out populations of calling insects. The idea is that the microphone array would be attached to a weather balloon. The time differential between the sound wave impacting the different microphones would allow the insect's location to be mathematically determined in 3-Dimensional space.
The limiting factor I seem to be running up against is the sampling rate of the recorder. Sound travels so fast that I need a very high Hertz rate to keep the mathematical error low. To boil this down into two questions:
What commercially available recorder has the highest sampling rate? All the ones I have found online max out at 192 KHZ. I need closer to 2.8 MHZ to accomplish my goal.
Why is the sampling rate of recorders so slow when computer clock speeds are up well into the GHZ range now? You would think a computer with a clock running that fast could manage a higher sampling frequency.