Acoustics – Sound-modifying means – Sound absorbing panels
Patent
1997-12-17
1999-04-06
Dang, Khanh
Acoustics
Sound-modifying means
Sound absorbing panels
181290, E04B 182
Patent
active
058921877
ABSTRACT:
The sound attenuating device of the present invention is a bulk layer connected to a support member which forms a plurality of Helmholtz resonators. This invention is particularly useful in a vehicle where the bulk layer attenuates high frequency noise, i.e. above about 1000 Hz, while the resonators can be tuned across the device to absorb at different lower frequencies in different areas of the device.
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Curbelo Pamela J.
Dang Khanh
United Technologies Corporation
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