Noise Cancellation for Voice Operated Switch (VOX) Communication

Award Information
Agency:
Department of Homeland Security
Branch
n/a
Amount:
$749,989.00
Award Year:
2010
Program:
SBIR
Phase:
Phase II
Contract:
D11PC20002
Agency Tracking Number:
0922012
Solicitation Year:
2009
Solicitation Topic Code:
H-SB09.2-006
Solicitation Number:
n/a
Small Business Information
Li Creative Technologies, Inc.
25 B Hanover Road, Suite 140, Florham Park, NJ, 07932-1924
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
125624432
Principal Investigator:
Qi Li
(973) 822-0048
li@licreativetech.com
Business Contact:
Qi Li
(973) 822-0048
li@licreativetech.com
Research Institution:
n/a
Abstract
Effective communication between first responders is extremely important not only to accomplishing tasks but also to personal safety. However, because first responders usually work in a high-noise environment, the communication clarity is severely degraded. A variety of solutions to improve the communication efficiency have been tried, but none of them completely solve the problem. The purpose of this project is to present a novel and promising noise attenuation solution for first responder to effectively communicate in high-noise operation environment regardless of the communications mode (through radios in push-to-talk mode, VOX mode and without radios). After careful review the system requirement and several discussions with local firefighters, we designed a complete noise cancellation solution with the following four modules in one device: two new acoustic sensors, audio signal processing module, one loudspeaker and radio interface. The two acoustic sensors replaced traditional microphones and achieved significant improvement in speech signal-to-noise ratio and the speech intelligibility in firefighter communications. Our Phase II deliverables are several prototypes in the product level. They will fully meet the DHS` requirement and significantly benefit first responders` communication. The new device will be ready for large quantity manufacturing by the end of Phase II.

* information listed above is at the time of submission.

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