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From: bloch@mandrill.ucsd.edu (Steve Bloch)
Newsgroups: comp.dsp
Subject: Re: Psychoacoustics
Message-ID: <7480@sdcsvax.UCSD.Edu>
Date: 16 Nov 89 23:43:16 GMT
References: <1989Oct31.193130.1685@eddie.mit.edu> <1989Nov2.180644.28647@sj.ate.slb.com> <13729@orstcs.CS.ORST.EDU> <9035@microsoft.UUCP>
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Reply-To: bloch@mandrill.UUCP (Steve Bloch)
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brianw@microsoft.UUCP (Brian Willoughby) writes:
>I wonder how much processing your brain does to reverse compute the
>changes in the sound as it passes through our irregularly shaped outer
>ear.  i.e. is it possible that a sound from behind is distinguished
>by the path it takes around your outer ear?

I seem to remember a discussion in Runstein & Huber _Modern_Recording_
_Techniques_ that described fairly precisely the delays stemming from
reflection from outer and inner pinnae of the ear, and in particular
that reflections from one set of pinnae gave predominantly front/back
information, the other predominantly up/down information.  The book's
at home, so I don't have the figures here.

"Writers are a funny breed -- I should know." -- Jane Siberry

bloch%cs@ucsd.edu