Audio Direction Finding

Based on the same sort of triangulation that is used to pinpoint the source of gunfire in some cities, I think I could, using three microphones, build a 3-D model of the soundscape.

Each microphone records continuously. Downstream, the computer matches peaks and troughs and tries to determine the position of the sound source relative to the three mics.

I feel confident that I could place the loudest sound, but other ones might be trickier 😉


This song haunted me in earlier days. The lyrics seems so incomplete despite there being a lot of words here. They are oblique and mysterious. I'll never know to my satisfaction what she and Billy Joe were throwing off the Tallahatchie bridge. I'll never know why she never said a word at the dinner table when the subject came up. I can only speculate, and I think that's really the brilliance of the song. You get this feeling that the clues are all there, and so you listen... but the clues are not there, they are only in your own head.