It is also important to realize that what matters is to
	reproduce the correct air pressure at the correct moment in
	time at the ear's tympanic membrane. Whether that is done
	by the aid of a multispeaker array, a headphone or two
	white laboratory mice whispering in your ears is more or
	less irrelevant....  -- Rolv-Karsten Roenningstad [5/99
	posting to sursound newsgroup]