albertson.ch...@gmail.com said: > Sound travels at about 1 foot per ms. So you can effectively delay the click > on one phone my placing it 8 feet farther away then the other phone. > Adjust the distance until the clicks seem to occur at the same time. That > said, I doubt your ears are sensitive enough to work at the single digit ms > level.
Your brain uses the difference in arrival times at your ears to determine direction. That works better with high frequency clicks rather than low frequency rumbles. You can work out how good it has to be to get reasonable results, but it's well below 1 ms. The usual test case is to jingle some keys. Sit on a stool with your eyes closed. Have a friend jingle the keys in various locations. Right-left works well. Up-down doesn't work very well. It would be fun to play with a pair of beeping iPhones and see what sort of direction they appear to be coming from. I wonder how much the length of the beep influences things. -- These are my opinions. I hate spam. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.