Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/301
Title: | Methods for designing a chamber to reduce noise in a duct | Authors: | Huang, L Choy, YS |
Issue Date: | 17-Jan-2006 | Source: | US Patent 6,988,057 B2. Washington, DC: US Patent and Trademark Office, 2006. | Abstract: | Low-frequency duct noise is relatively difficult to deal with by passive methods such as porous duct lining. Reactive methods like expansion chamber are rather bulky, while compact resonators are to narrow-banded. This invention shows that a suitably stetched thin membrane backed by a slender cavity can achieve a satisfactory performance from low to medium frequencies over an octave band. | Keywords: | Low-frequency duct noise Duct noise reducion |
Rights: | Assignee: The Hong Kong Polytechnic University. |
Appears in Collections: | Patent |
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File | Description | Size | Format | |
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us6988057b2.pdf | 1.17 MB | Adobe PDF | View/Open |
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