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Active Noise Reduction Technology

Award Information

Agency:
Department of Defense 		Branch:
Navy 		Award ID:
70295 		Program Year/Program:
2004 / SBIR
Agency Tracking Number:
N043-222-0702 		Solicitation Year:
N/A 		Solicitation Topic Code:
N/A 		Solicitation Number:
N/A
Small Business Information
Etrema Products, Inc.
2500 N. Loop Drive Ames, IA -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2004
Title: Active Noise Reduction Technology
Agency / Branch: DOD / NAVY
Contract: N65538-05-M-0005
Award Amount: $69,732.00
 

Abstract:

The proposed effort will actively reduce noise from flight operations at watchstander stations below the flight deck to levels that do not require hearing protection. Long-term hearing loss of personnel is projected to cost the Navy on the order of $12.6 billion over a 30 year retirement period. Active noise reduction (ANR) has long been known as the best method of controlling low-frequency noise but has been limited by available technologies. Recent developments in modern control methods and microprocessors have made active noise reduction a practical, realizable solution for controlling low-frequency noise. Etrema Products, Inc. proposes to implement an ANR system to reduce noise levels from shipboard flight operations by >20 dBA over the frequency range from 50-800 Hz. The proposed approach uses a combination of active structural acoustic control and active noise cancellation by vibrating ship bulkheads and/or speaker panels to actively control noise in ship compartments using the magnetostrictive material, TERFENOL-D. The Phase I effort will be to generate a design concept, demonstrate its feasibility through modeling, and develop a concept validation plan. If successful, the proposed work will reduce costs to the Navy of long-term hearing loss and other detrimental effects of excessive noise exposure.

Principal Investigator:

Rachel Dudley
Senior Engineer
5152968030
rachel.dudley@etrema.com

Business Contact:

Jonathon Snodgrass
Vice President and Chief Scientist
5152968030
jon.snodgrass@etrema.com
Small Business Information at Submission:

ETREMA PRODUCTS, INC.
2500 N. Loop Drive Ames, IA 50010

EIN/Tax ID: 421364093
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No