Novel Catalytic Air Cleaner for Removal of VOCs and Particulates from Indoor Air

Award Information
Agency:
Environmental Protection Agency
Branch:
N/A
Amount:
$70,000.00
Award Year:
1999
Program:
SBIR
Phase:
Phase I
Contract:
N/A
Agency Tracking Number:
44114
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Ultramet
12173 Montague Street, Pacoima, CA, 91331
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
N/A
Principal Investigator
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
Not Available Most commercial of-the-shelf (COTS) headset systems utilize a combination of Passive and analog active noise reduction (AANR) to improve voice communication reception and intelligibility in high noise aircraft environments. These system do not satisfy USAF needs. The USAF has defined the need for high performance headsets: (1) Noise attenuation bandwidth needs to be extended to include higher frequencies 2,500 Hz. (2) There is a need for further intelligibility improvements. The BioAcoustics concept integrates: three important performance features: (1) unique high-damping earcup cushions (hybrid material arrangement) in an anthropomorphically correct cushion configuration to significantly improve passive noise attenuation in low frequency bands; (2) adjustable position, low impedance, receiver to enhance the audio-receiver-to-ear-canal coupling; an (3) Digital Active Noise Attenuation to improve the signal-to-noise ratio. The fully integrated system concept is expected to attenuate greater noise levels (40 to 45 dB) in a broader band (20-2500 Hz), reduce the signal level required for audibility, and, thus, significantly improve user comfort and intelligibility. Special attention is given to noise cancellation algorithms to deal with random noise. We will domonstrate that the proposed Audio-Comfort EarSearl(tm) is a more effective passive noise barrier and more comfortable than their SOA circumaural earcup cushion counterpart.

* information listed above is at the time of submission.

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