[LAD] A Cathedral in your backyard

After looking closer to Xaviers 'Allosphere' I doubt that it would be possible to do the "acoustic experiment with a dome to demonstrate positioned sound coming out of thin air" that I suggested. You'd need a dome made out of marble or concrete to do that. It all depends on the sum of reflections, so any acoustic dampening or slip thru would lessen the effect. What I think would be possible as an experiment though (without involving a budget the size of the Pope or TU-Berlin), is to place a large amount of uniform speakers in a circle and then feed them with the same monophonic signal. If everything works as expected, it should then appear like the sound emerges from the center of the circular array of speakers. * The speakers could be a collection of ghettoblasters and kitchen radioes with fresh batteries. * The signal could be a local radiostation (hey, this is /wireless/ :-). * The location could be a park or a stadium in your city. Would that work? I am convinced that it would really surprise everybody involved - in a positive way - if it did. But if it doesn't ... Then one would have 200 buddies carrying ghettoblasters in hand staring suspiciously at the initiator ... /jens On Sat, 2007-04-21 at 13:24 -0400, Eric Dantan Rzewnicki wrote: --