mcraig at optushome.com.au
Wed May 5 20:26:09 EDT 2004
Sorry for making the same point again - I should have read all the posts
From: music-dsp-bounces at shoko.calarts.edu
[mailto:music-dsp-bounces at shoko.calarts.edu] On Behalf Of
Knut-Inge.Hvidsten at ffi.no
Sent: Thursday, 6 May 2004 12:02 AM
To: music-dsp at shoko.calarts.edu
Subject: [music-dsp] RE:phase
>> This seems to indicate that we are phase deaf above 1-2kHz?
>Interesting point - only freqs below about 1.6Khz are used for localisation
by >the brain, if I remember correctly.
Hmm. I think that at lower frequencies the brain use phase differences
betwen left and right ear (as long as the wavelength is small enough
compared to the 30cm or so path difference between ears).
While at higher frequencies, the HRTF implies that sounds coming from
different angles will be filtered differently, and that a sound coming
directly from the right will be quite a bit louder and contain more hf in
the right ear than in the left.
Moreover, I think that we have a "hole" somewhere between 1-2 kHz where none
of the mentioned mechanisms are particularly efficient. As well as for low
frequencies, of course.
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