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7010131 |
Quasi-differential power amplifier and method
A quasi-differential power amplifier and method are disclosed that enhance drive capability and dynamic range by driving a right, left and common terminals with a right channel output signal, a...
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6993480 |
Voice intelligibility enhancement system
Intelligibility of a human voice projected by a loudspeaker in an environment of high ambient noise is enhanced by processing a voice signal in accordance with the frequency response...
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6710653 |
D-class power amplifier with electric power regeneration function
A D-class power amplifier of two channels in which an increase in power voltage due to a regenerative current is prevented and a high efficiency in utilization of electric power is attained. Two...
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6529787 |
Multimedia computer speaker system with bridge-coupled subwoofer
A multimedia computer speaker system includes a pair of amplifiers that provide amplified right and left audio signals to a pair of wide-band speakers. The amplifiers are configured to provide the...
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EP1263130A2 |
D-class power amplifier with electric power regeneration function
A D-class power amplifier of two channels in which an increase in power voltage due to a regenerative current is prevented and a high efficiency in utilization of electric power is attained. Two...
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6181796 |
Method and system which drives left, right, and subwoofer transducers with multichannel amplifier having reduced power supply requirements
A system and method which generates amplified signals indicative of left and right stereo channels, and uses the signals to drive transducers for each of subwoofer, left stereo, and right stereo...
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D432244 |
Device for encasing an assay test strip
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6031921 |
Loudspeaker unit
A loudspeaker unit comprises a loudspeaker box, a first loudspeaker attached to a front panel of the loudspeaker box, and a second loudspeaker having the same diameter as that of the first...
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5469509 |
Car audio system with high signal output
A circuit for coupling a 2- or 4-channel audio deck to 2- or 4-speakers in a car stereo audio system to increase the signal level output without raising the supply voltage or increasing the noise....
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5459813 |
Public address intelligibility system
Intelligibility of a human voice projected by a loudspeaker in an environment of high ambient noise is enhanced by amplifying formants (26, 28, 30) of the voice. Because intelligibility of the...
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