> multiple microphones on one side of the house to track birds. This was one of my first at home demos! Tracking birds and cars. If you want to get started D

> multiple microphones on one side of the house to track birds. This was one of my first at home demos! Tracking birds and cars. If you want to get started DIY and figuring it out yourself, try about 5 microphones, each 1m apart. The trick is having all the mics in line of sight to the object in question. Otherwise you're left with doing an "intersection of angles" method, which is much simpler, but horrible in terms of precision. In a later demo I used a PTZ laser pointer to track the moving sound sources, so, it's at least possible!