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Re: cross-modality-size-loud

this seems off to one side, a little, but taking a vaguely 'ecological
approach', although we've been talking about objects in isolation, broken down
into the striker and the struck -  in the real world, large sounding objects
have differnt physical (inc. acoustical) relationships with the surrounding
environment. That is, given that a larger sounding object can entail more
overall energy, then the transmission through ground and other structures will
differ (from the case of small objects). This secondary energy 'hangs on' later,
so the overall event has quite a different frequency-with-time structure.
So, whilst we can construct 'special case' events to minimise the effects of
size of struck object on local environment structures, it should be recognised
that these are indeed special cases.

Dr. Peter Lennox
Signal Processing Applications Research Group
University of Derby
Int. tel: 3155

>>> "Daniel J. Tollin" <Daniel.Tollin@xxxxxxxxx> 17/09/2007 18:53 >>>
Some bats can produce ultrasonic sounds (vocalizations) well over 100 dB. And
bats are pretty small.  So getting back to Jan's point, pitch might better
correlate with size.
Dan Tollin


From: AUDITORY - Research in Auditory Perception on behalf of Bob Carlyon
Sent: Mon 9/17/2007 4:32 AM
To: AUDITORY@xxxxxxxxxxxxxxx 
Subject: Re: cross-modality-size-loud

Hmm.., I think this depends on whether you are talking about the source or the
filter; if a large person hits a bell then it generally makes more sound than if
a small person does.  When it comes to organisms, size and loudness co-vary:
elephants are louder than mice, and adults are louder than their young. There
are of course exceptions, as anyone who has ever taken children to a restaurant
will testify...


Jan Schnupp wrote: 

	Dear Peter,
	if you hit a large bell and a small bell, how loud they are does not
depend on size, but on how hard you hit them. The larger the object the deeper
the sound, because resonant frequency is proportional to mass. So if there is a
link with size, then it should be pitch more than loudness. 
	On 17/09/2007, pieter jan stallen <pj.stallen@xxxxxxxxx> wrote: 

		Dear List,

		Does anyone know of  experimental psychological data reported
which refutes (or not) the hypothesis: the perception of object O as "has much
of quality X" predisposes to the perception also of "has much of quality Y"?
E.g., is there empirical evidence for cross-modal bonds like "large objects
(much of size) are loud objects (much of sound)" ? 

		Although I see brain research approaching the subject (e.g. 
<http://www.dhushara.com/pdf/synesthesia.pdf> ) I have not (yet) found so
much empirical psychology about such metaphors. I may not have studied carefully
enough the synaestesia literature, but appreciate any more specific
'forwardings' then.

		Pieter Jan Stallen / Chair Community Noise Annoyance /
University of Leiden / Netherlands

	Dr Jan Schnupp
	University of Oxford
	Dept. of Physiology, Anatomy and Genetics
	Sherrington Building - Parks Road
	Oxford OX1 3PT - UK
	www.oxfordhearing.com <http://www.oxfordhearing.com/>  

Dr. Bob Carlyon
MRC Cognition & Brain Sciences Unit
15 Chaucer Rd.
Cambridge CB2 7EF

Phone: +44 1223 355294 ext 651
Fax:   +44 1223 359062
www.mrc-cbu.cam.ac.uk <http://www.mrc-cbu.cam.ac.uk/> 

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