Electroacoustic waveguide transducing

Details Electroacoustic waveguide transducing Electroacoustic waveguide transducing

2001-01-02

2008-09-16

Mei, Xu (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having acoustic wave modifying structure

C381S337000, C381S352000

Reexamination Certificate

active

07426280

ABSTRACT:
An acoustic waveguide system, having source of acoustic radiation and a source of opposing acoustic radiation. An acoustic waveguide has an open end and an interior. A first acoustic driver having a first radiating surface and a second radiating surface is arranged and constructed so that the first radiating surface radiates sound waves into free air and the second radiating surface radiates sound waves into the acoustic waveguide so that sound waves are radiated at the open end. A source of opposing sound waves in the acoustic waveguide opposes a predetermined spectral component of the sound waves radiated into the acoustic waveguide to reduce the acoustic radiation of the predetermined spectral component from the acoustic waveguide.

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Foreign communications from Japanese counterpart application dated Oct. 27, 2003 (12 pages).
English translation of Foreign communication from Chinese counterpart application (7 pages).
Official Office Action from Japanese counterpart application No. 2001-399799, dated Oct. 3, 2003 (3 pages).
Official Office Action from Chinese counterpart application No. 01145310.9, dated Feb. 10, 2006 with English Translation (31 pages).

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