[Myrmidon @ Jun 5th 2007 12:01AM]

Hmmm that seems like a hoax. Our ears can only detect 'direction' of sound because we move our heads slightly from side to side, and can perceive the difference in signal. However, if the speakers are attached to your head (4 a side in this case), then the natural head motion won't work and you won't be able to establish direction that well.

[t-bone @ Jun 5th 2007 12:42AM]

You have a good point. If I hear something behind me and to the right, I can turn my head and better pinpoint the sound. With the headphones the sound will be relative to my head, not the game.

[Olivier @ Jun 5th 2007 3:50AM]

Turlte probably didn't include gyros to detect motion, but true spacial sound can be achieved with only two speakers and some clever maths.
This isn't the marketing crap you'll find under the name "virtual surround", it's called Binaural sound
http://en.wikipedia.org/wiki/Binaural_recording

And Stereo ain't got nothing to do with it.

[Evan Labbe @ Aug 22nd 2007 1:43PM]

wait, i'm having trouble with what Myrmidon and T-Bone just said, but more T-Bone than the former. He kind of disproves Myrmidon's statements
"If I hear something behind me and to the right, I can turn my head..."
So, wait. if surround sound is only possible if you turn your head to pick up on the difference in wavelength, then how did you know the sound was behind and to the right in the first place.
Humans are amongst the few on earth that have the ability to distinguish sound location naturally, without moving ears or head.
Surround sound in a headphone is done by placing several tiny speakers inside, and activating each individually, similar to 7.1 surround. Its not trickery, or false promises, if a sound is behind an to the right, then the sound is put through the right headphone, rear most speakers.