whats funny about sound is in an environment with multiple creatures it can be hard to isolate one from the other, but with visual pictures it is somewhat easy.<p>in pictures you have a 2d projection of 3d information, with time as optional. animals dont have the same 3d position at the same time so its rare for one to be occluding the other in the projection.<p>in sound you have to have time, sound without time has basically no meaning. but with one mic its a 1 dimensional signal varying over time, coming from a 3d environment. where creatures easily overlap each other in the time dimension.