Hearing Protection Evaluation System

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911QX-09-C-0036
Agency Tracking Number: A082-060-1529
Amount: $119,732.00
Phase: Phase I
Program: SBIR
Awards Year: 2008
Solicitation Year: 2008
Solicitation Topic Code: A08-060
Solicitation Number: 2008.2
Small Business Information
2020 Kraft Drive, Suite 3040, Blacksburg, VA, 24060
DUNS: 364131011
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Yu Du
 Research Scientist
 (540) 951-1284
 yudu@adaptivetechinc.com
Business Contact
 William Saunders
Title: President
Phone: (540) 951-1284
Email: will@adaptivetechinc.com
Research Institution
N/A
Abstract
The acoustic test fixture (ATF) type of hearing protection evaluation system (HPES) has been widely used in the past to evaluate hearing protection device (HPD) performances, in addition to the Real-Ear-Attenuation-at-Threshold method and the Microphone-In-Real-Ear method. Since the use of ATF devices does not rely on human subjects, they are more efficient, and in many cases indispensable, for testing HPDs in various application environments. However, one significant drawback of current ATF devices is that they lack agreement with human subject testing due primarily to the insufficiency of modeling the real human head regarding the hearing mechanism. The focus of this Phase I program is thus to develop novel approaches, based on finite element analysis, for building an advanced HPES that emulates realistic heads and allows for characterizing either circumaural or insert-type HPDs in both impulse and continuous noise environments across the dynamic range of human hearing. Means for imitating mechanical and acoustical characteristics of the human head and auditory system, as well as means for emulating bone conduction pathways, will be investigated in this program. A report describing the approach and demonstrating the feasibility and capabilities of an advanced HPES design will be provided at the conclusion of Phase I.

* Information listed above is at the time of submission. *

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