Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Within duct
Reexamination Certificate
2007-01-09
2007-01-09
Grier, Laura A. (Department: 2644)
Electrical audio signal processing systems and devices
Acoustical noise or sound cancellation
Within duct
C248S610000
Reexamination Certificate
active
09814227
ABSTRACT:
An active noise attenuation system includes a speaker housing for a speaker assembly that attenuates noise generated by an air induction system for a vehicle engine. The speaker housing is a generic housing formed from plastic that can be utilized with many different vehicle types. An air cleaner housing is positioned between the speaker housing and the engine for filtering out contaminants from the air before the air is drawn into the engine. Brackets are joined to the air cleaner and speaker housings for mounting the housings to a vehicle structure.
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Int'l Search Report, dated Jul. 15, 2002.
Grier Laura A.
Siemens VDO Automotive Inc.
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