Sound reproduction device

Details Sound reproduction device Sound reproduction device

2006-11-21

2006-11-21

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

Including phase control

C381S098000, C381S099000, C381S089000, C381S059000

Reexamination Certificate

active

07139402

ABSTRACT:
A sound reproduction device of the present invention includes: a first loudspeaker; a second loudspeaker; a first loudspeaker drive section for driving the first and second loudspeakers, the first loudspeaker drive section drives the first and second loudspeakers at substantially the same phase in a first frequency band, and the first loudspeaker drive section drives the first and second loudspeakers at substantially inverse phase and substantially different amplitude levels in a second frequency band higher than the first frequency band.

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