Noise Cancellation for Voice Operated Switch (VOX) Communication
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.
Small Business Information at Submission:
Li Creative Technologies, Inc.
25 B Hanover Road, Suite 140 Florham Park, NJ 07932-1924
Number of Employees: