Electrical audio signal processing systems and devices – Having non-electrical feature – Loudspeakers driven in given phase relationship
Reexamination Certificate
2011-03-22
2011-03-22
Faulk, Devona E (Department: 2614)
Electrical audio signal processing systems and devices
Having non-electrical feature
Loudspeakers driven in given phase relationship
C381S097000, C381S120000, C381S028000, C381S387000
Reexamination Certificate
active
07912229
ABSTRACT:
Power amplifies are provided to correspond with a plurality of speaker units constituting a speaker array. Driving signals from the power amplifies are supplied to one terminals of the speaker units, and other terminals are connected a common line. Inverters are provided at preceding stages of the power amplifies such that the driving signals supplied to the speaker units being arranged adjacently have an opposite phase respectively. Since a correlation between the driving signals of the adjacent speaker units is high, a current flowing through the common line can be very reduced. An LED display panel can be driven by the similar method.
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Ito Shin
Noro Masao
Faulk Devona E
Paul Disler
Pillsbury Winthrop Shaw & Pittman LLP
Yamaha Corporation
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