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It seems to me that an interesting angle is that it’s not just an auditory sensory acuity problem. It’s a biofeedback problem, right enough, but cognitive aspects are important here
– there are many people with good hearing that are unaware of their own acoustic output (children, for instance – and many adults). So, although you might be interested in people with depleted sensory acuity, who therefore couldn’t do what many ‘normal’ people can do – hear the reflected sound of their own footsteps,
which ongoing feedback can be used to calibrate ones sensitivity, useful in stealth situations – the question might be “can one use any other feedback route in stealth situations?” – could be a visual metering, for arguments’ sake, or haptic input. You’re
actually interested in a fairly narrow dynamic range, I think, but it’s complicated by acoustic factors – low-level sounds can carry; for instance, footfalls on metal floors or some concrete constructions can cause the material to behave as a drum, with resonance
over a large volume of material (meaning that inverse square law wouldn’t apply). So, monitoring for amplitude at the stealthy subject wouldn’t provide good predictions. Also, there’s a ‘noise floor’ aspect to this, and someone with depleted hearing might not be fully cognizant of the noise floor? I’ll be interested to know what you manage to turn up Cheers ppl Dr. Peter Lennox Senior Lecturer in Perception College of Arts University of Derby, UK t: 01332 593155 From: AUDITORY - Research in Auditory Perception [mailto:AUDITORY@xxxxxxxxxxxxxxx]
On Behalf Of Blyth M. Hello list members, My PhD research is investigating auditory fitness for duty in military personnel. Specifically, I am investigating the impact of hearing impairment on acoustic stealth awareness. This refers to situations where it is important to be quiet
to remain undetected by a nearby enemy, and how having a hearing loss might affect this ability. As far as I am aware there is limited literature on this type of auditory situation, and wonder if anyone may be able to point me towards relevant papers? I believe a core task involved is the ability to predict the intensity of a sound at a target’s location when you are generating the sound yourself (e.g. talking, walking on gravel, etc.), therefore allowing you to predict how loud you
can be without the target hearing. My literature searches so far have returned very little, but I wonder if I’m using the wrong terminology, or missing some old school papers? Any help would be greatly appreciated! Many thanks Matt Matt Blyth PhD Candidate Hearing and Balance Centre Institute of Sound and Vibration Research University of Southampton Southampton, SO171BJ The University of Derby has a published policy regarding email and reserves the right to monitor email traffic. If you believe this was sent to you in error, please reply to the sender and let them know. Key University contacts: http://www.derby.ac.uk/its/contacts/ |