Appeal No. 1996-1891
Application 08/058,478
A. The invention
The invention is an acoustic waveguide loudspeaker system
including damping material located in a passage which connects
the vibratile surface of the electroacoustical transducer to
an opening in the system housing.
B. The claims
Representative claim 1 reads as follows:
1. An acoustic waveguide loudspeaker system comprising:
an electroacoustical transducer having a vibratile
surface,
an acoustic waveguide having a first end open and a
second end adjacent to said vibratile surface and an effective
length corresponding substantially to a quarter wavelength at
the lowest frequency of pressure wave energy to be transmitted
between said first and second ends,
and damping material in said waveguide near said
vibratile surface positioned so as to negligibly attenuate
bass frequency energy while of sufficient volume to damp peaks
at higher frequencies above the range of said bass frequency
energy.
We note this claim does not require that the damping
material be located only near the vibratile surface and thus
is broad enough to read on a waveguide having damping material
located near to and far from the vibratile surface, e.g., a
waveguide having damping material along its the entire length.
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