Ultra directional speaker system and signal processing...

Electrical audio signal processing systems and devices – Circuitry combined with specific type microphone or loudspeaker

Reexamination Certificate

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C381S077000

Reexamination Certificate

active

07929715

ABSTRACT:
An ultra directional speaker system and a signal processing method thereof are disclosed. In accordance with the present invention, the pre-distortion compensation may be applied to the input signal in real time and a signal to be modulated is subjected to a VSB modulation to minimize the distortion according to a level of the signal, and a signal difference compensation according to an envelop detection of a current signal and a signal in a previous stage.

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patent: 6584205 (2003-06-01), Croft, III et al.
patent: 7054359 (2006-05-01), Kennedy et al.
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patent: 2003-507982 (2003-02-01), None
patent: 2003-299180 (2003-10-01), None
patent: 0115491 (2001-03-01), None
patent: 03/079572 (2003-09-01), None
Search Report issued by the EPO to the EP Application No. 06123564.4; filed Nov. 7, 2006 based on KR Patent Application No. 10-2005-0111146, dated Aug. 24, 2009.

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