Out of interest - what research has been done on this where the
listeners were lying down? Do they hear such sounds still as "above",
or behind their heads? And, in the same vein, one the degree of such
perception with respect to intensity?
Richard Dobson
On 01/04/2012 12:56, Robert Greene wrote:
Actually, I think the ear/brain does not make
this distinction without pattern recogntion,
in other words, the height impression to the
extent that it arises from spectrum of the sound
depends on what the ear/brain expects the actual
sound to be. There is a similar effect about
frontal versus rear sounds. A
natural familiar type of sound source can be
made to sound behind when played in front if it
is spectrally modified in the way it would be
if it were in fact coming from hehind!
Height perception similarly plays off the
known sound spectrum versus the perceived one
to determine height. But for height it is pretty
crude--7-8 kHz tends to sound up even if it is not.
Cymbals float up in perception even though the sound is familiar
in spite of the source being not up.
This is true in reality as well as in recordings.
Robert
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