Wind Noise Reduction Using the Multiple Aperture Sensor System

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$99,847.00
Award Year:
1997
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
36096
Agency Tracking Number:
36096
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
7923 Jones Branch Dr, Mclean, VA, 22102
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Scott Morgan
(703) 448-4252
Business Contact:
() -
Research Institution:
n/a
Abstract
Wind noise in outdoor measuemetn micropnones can mask an acoustic signal. Windscreens provide some wind noise reduction; however, those typically used for outdoor applications provide noise reductions of approximately 10-15 dB. Planning Systems Incorporated (PSI) proposes to design and test a Multiple Aperture Sensor System (MASS) consisting of a microphone, a processor, and data acquisitio and signal processing software. The system will be designed to adaptively remove wind noise via spatial filtering. Improvement ni the signal-to-noise ratio in a windscreened microphone will be realized by spatially filtering the wind noise. Calculations show that wind noise reduction for a seven sensor-element microphone with .125m sensor-element spacing should increase by an additional 20-55 dB. For Phase I, PSI will perform a feasibility study which includes theoretical design, experimental testing, and system evaluation for a low-frequency (10-50 Hz) system. The microphone will also be tested at higher frequencies to determine its commercial viability as a microphone for use in jet noise measurements, outdoor concerts, speeches, and other applications.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government