[hinkley]

Whups. Sound not light.

Sensors around 12.5 inches apart will be a millisecond separated. The actual device was from a fuzzy recollection of a picture I saw, was probably 700 microseconds across. But it was a sphere with many sensor so adjacent sensors were less than .1 ms of separation. They would have all the time in the world to calibrate such a thing.

My guess is rather than triangulation, they probably just find the two microphones with the widest phase separarion between their signals and draw a line back between them. I don’t actually know how much 3D sonic math they’re doing.

What I do recall is that it was tech that had recently reached the Cheap Enough to Use status at the time, which is about 20 years ago now?