SIGNAL PROCESSING APPARATUS AND SIGNAL PROCESSING METHOD

PROBLEM TO BE SOLVED: To reduce noise caused by the changeover of stop/stop release of a signal output in response to an instruction signal of mute ON / OFF in a DC power amplifier. SOLUTION: When a signal instructing a voice mute ON is obtained, a ΔΣ modulation signal is integrated, and integral va...

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Bibliographic Details
Main Authors YAMAMOTO YUSUKE, NAKAGAMI TARO, YASUDA NOBUYUKI, MASUDA TOSHIHIKO, OGURI KAZUATSU
Format Patent
LanguageEnglish
Published 12.05.2005
Edition7
Subjects
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
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Summary:PROBLEM TO BE SOLVED: To reduce noise caused by the changeover of stop/stop release of a signal output in response to an instruction signal of mute ON / OFF in a DC power amplifier. SOLUTION: When a signal instructing a voice mute ON is obtained, a ΔΣ modulation signal is integrated, and integral values by 256 samples are captured and an average value is outputted. Succeedingly, an output of the ΔΣ modulation signal is interrupted in a timing when the integral value is equal to the average value to stop sound output from the DC power amplifier. COPYRIGHT: (C)2005,JPO&NCIPI
Bibliography:Application Number: JP20030354887