Q: Model for perceived sound amplitude as fn of angle?

Susan Moreland smorelan at MAGNUS.ACS.OHIO-STATE.EDU
Thu Apr 13 05:46:59 EST 1995


>In article <3maa44$4v3 at news.duke.edu>, lorax at acpub.duke.edu (Jeff Brent) says:
>>
>>   I'm programming stereo sound software with the goal of making sounds
>>sound like they're coming from different positions in space from the
>>listener.  Though I know there are other contributing factors to our
>>perception of where a sound is located, to _start_ with, I want to
>>consider  the relative amplitudes received in each ear, as a function
>>of the 360 degrees around the listener.  (I don't know if there's any
>>way to simulate height...) Also, though I'm not sure I can be this
>>exact, the slight delay in the farthest ear.  I think I have seen some
>>equations for this sound placement thing; it seems that it would not be
>>simple geometry, since one's face shields sound coming from a side....
>
>
>There should be a large collection of work dealing with relative effects
>of phase difference between the ears.  The MLD (masking level difference)
>is one good place to start.  I'm sure there are others who are more versed
>in psychoacoustics than I, so I'll let them field this question directly.

i don't know if you're aware of this or not, but i believe that such a
system has already been developed -- perhaps by the air force (???).  in
fatc, i have been tested (for research purposes) with such a localization
unit.  

i don't remember who developed it off-hand, but if it's of interest to you i
am happy to get that information and send it to you privately -- or to the
group if it is of common interest.

susan
smorelan at magnus.acs.osu.edu

the less i seek my source 
for some definitive,
the closer i am to fine.
~ indigo girls




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