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There should be an app that allows one to triangulate sound sources to locate these darn things ..

• squarefoot 9y ago
  Not that hard to do: sample the sound using multiple microphones, discard anything after the first thing you get (usually they're misleading reflections), then measure the delay to build a map of vectors pointing to the object. The military already have devices using that principle to locate the sound source of a weapon firing to send it a bomb. The RF variant is also employed in air traffic control and to detect pirate radio transmissions and uses arrays of omnidirectional antennas just like this one: https://cdn.everythingrf.com/live/direction_finders_teaser_original.jpg https://cdn.everythingrf.com/live/direction_finders_teaser_o... Although military smaller ones are usually protected from casual view using dome-like covers.