Augustine Leudar wrote:
I think when you tilt your head - especially up - it allows interaural
level and time differences to come into play that arent normally available
for vertical soundsources. Basically the sound will hit one ear before the
other and louder. We all know thats the case for horizontal sounds - but I
think thats why we tilt our head up too.
https://en.wikipedia.org/wiki/Sound_localization
For sound localization in the median plane (elevation of the sound)
also two detectors can be used, which are positioned at different
heights. In animals, however, rough elevation information is gained
simply by tilting the head, provided that the sound lasts long enough
to complete the movement. This explains the innate behavior of[
<https://en.wikipedia.org/wiki/Wikipedia:Vagueness> cocking the head
to one side when trying to localize a sound precisely.
As simple as it gets...
Best,
Stefan
I suspect floor as well as
shoulder reflections count !
On 12 December 2015 at 22:06, Stefan Schreiber <st...@mail.telepac.pt>
wrote:
Peter Lennox wrote:
Of course, the paradigm that excludes head-tilt - necessary to control for
experimental variables, does mean that the experiment is not representative
(what some people refer to as 'ecological validity') of real-world
localisation.
Given that, when I look around the lecture theatre, 40%+ have, at any one
time, some head tilting, and many move their heads (apart from the ones
that are slumped forward on their chests), the "median plane" should not be
conflated with "vertical"...:-)
All these students sleeping during lectures - damned, they damage our most
elaborated vertical precedence theories!
And the ones who don't sleep, they are actually worse! Because the dynamic
head-tilt problems are harder to deal with than the static ones...
:-X
St.
P.S.: Any real-world theory of acoustical localization will have to
consider head movements and related "perspective changes".
I bet that most people move their head somehow if they can't
determine very well from where some sound comes. (Turning your head to the
suspected direction of some < relevant > sound source could be a natural
reaction. Biological behaviour pattern?)
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