Appeal No. 1998-2675
Application 08/779,024
suppressing said remnant noise, said configuration
comprising:
an expanded room formed by enlarging an area of a
cross section of part of said duct, said cross section
being perpendicular to a direction of the air current,
the air current having a decrease in velocity when coming
into said expanded room,
wherein said microphone, provided upstream from said
auxiliary microphone and farther from said speaker than
said auxiliary microphone, is contained in said expanded
room for picking up said noise, the decrease in velocity
of the air current reducing an effect of the air current
on said microphone in picking up said noise.
The Examiner relies on the following prior art:
Chaplin et al. (Chaplin) 4,527,282 July
2, 1985
Rose et al. (Rose) 4,749,150 June 7,
1988
Nelson 4,989,688 February 5,
1991
Eguchi 5,278,780 January 11,
1994
(filed July 9,
1992)
Gotoda et al. (Gotoda) 3-188798 August 16,
1991
(Japanese Kokai)
Claims 1, 10, and 11 stand rejected under 35 U.S.C.
§ 103(a) as being unpatentable over Eguchi and Chaplin.
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