Accession Number:

ADA626341

Title:

Insights into Hazard from Intense Impulses from a Mathematical Model of the Ear

Descriptive Note:

Technical memo.

Corporate Author:

ARMY LAB COMMAND ABERDEEN PROVING GROUND MD HUMAN ENGINEERING LAB

Personal Author(s):

Report Date:

1992-02-01

Pagination or Media Count:

14.0

Abstract:

In order to provide insight into the mechanisms that operate in the ear when it is exposed to intense sounds, time and frequency domain mathematical models of the ear including significant nonlinearities in the middle ear were developed to trace energy flow from the free field to the inner ear and ultimately allow the calculation of basilar membrane displacement and a consequent hazard function. These models match the ears behavior at low intensities and also reproduce many of the features of the data on hearing hazard from intense impulses. They provide critical insights into the loss mechanisms, suggest new strategies for protecting hearing as well as reducing hazard at the source and could also serve as a framework for a new, accurate, theoretically based method for rating hazard from intense sounds.

Subject Categories:

  • Anatomy and Physiology
  • Acoustics
  • Human Factors Engineering and Man Machine Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE