Eric:
As others have mentioned, a hexagon often does a better job of reproducing
the 2D "ambience," as I discovered when I started experimenting with
Ambisonics at sports-car races.
If you really want to be "surrounded" you can even get to a compelling
experience of 3D with a Tetramic -- my preference is for 2x "squares" with one
horizontal and another vertical and you sitting in the middle. This works
better than a "flat" cube in my own experiments. So, instead of having 4x
speakers "down" and 4x "up," there are 4x in the normal plane and 2x each
on the floor and the ceiling at the "side" positions.
All that said, you will NOT be happy with the "stage" that any of this
presents. If there is actually a "focus" of the sound, like for a
performance, for instance, then you will have to ADD "stereo" to the mix.
Since one of the most compelling "stereo" setups is called Ambiophonics,
adding that to 3D Ambisonics = Robin Miller's HSD-3D and it is *really*
satisfying for the right material!
Mark Stahlman
Brooklyn NY
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