Frequency selective acoustic waveguide damping

Details Frequency selective acoustic waveguide damping Frequency selective acoustic waveguide damping

1993-05-06

2001-08-21

Kuntz, Curtis (Department: 2643)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having acoustic wave modifying structure

C381S348000, C381S353000, C381S395000, C381S337000, C181S189000, C181S151000, C181S187000, C181S198000

Reexamination Certificate

active

06278789

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates in general to an acoustic waveguide loudspeaker system generally of the type disclosed in Bose U.S. Pat. No. 4,628,528 incorporated by reference herein and more particularly concerns an acoustic waveguide loudspeaker system having damping.
SUMMARY OF THE INVENTION
According to the invention, there is an acoustic waveguide having an electroacoustical transducer at one end and open at the other with damping material, such as polyester in a small portion of the acoustic waveguide near the electroacoustical transducer.
Other features, objects and advantages will become apparent from the following detailed description when read in connection with the accompanying drawings in which:


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European Patent Office Serch Report, dated Aug. 1, 1994.

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