25 Apr
2007
25 Apr
'07
9:03 a.m.
On Wed, 2007-04-25 at 11:33 +0200, Joern Nettingsmeier wrote:
Well, I am certainly no expert either but I know that we can sometimes
be easily lured, not being able to tell the difference between a
pre-delay and a post-delay. What is at play her is that there is a
stronger signal present that we prefere to believe in. So it is
acceptable with a weak pre-delay signal from certain speakers close to
you, as long as you will immidiately after be overwhelmed by a stronger
signal showing "the true origin" of the signal.
/jens
Jens M Andreasen wrote:
imagine you are standing off-center. all speakers
start playing. two
problems: one, if the auditorium is large, the speakers close to you
might hit a lot earlier than those on the opposite side. if they are
more than about 30ms apart, the haas effect kicks in and you will
localize the sound as coming from the closer speakers.
two, if the levels of the far and close speakers differ by more than 6-8
db, you will localize the sound at the louder source even without the
haas effect. not so much an issue, because such arrays carry a long way
and the level does not drop much.
Origo is the name of the center of a cartesian space where we have x = 0
and y = 0. The word "original" may ring a bell? This is where it all
originates or is derived from.
I am assuming a four quadrant system with negative as well as positive
values to map our floor-space.
Is origo a special case that doesn't work?
origo? I would have thought it to be
the simple base-case, even simpler than the "dropping the soap in a
bathtub, but reversed" wawe propagation I suggested earlier.
yes. reversed. i'm not an expert on this, but my guess is that when you
try such things, you have to take into account that it is *not* a
standing wave field. it travels, but in the wrong direction. that means
your ITD cues (interaural timing difference) will be wrong.