SIGNAL-COMPONENT EXTRACTION APPARATUS AND SIGNAL-COMPONENT EXTRACTION METHOD
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United States of America Patent
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Issued Date -
Jan 26, 2012
app pub date -
Jun 14, 2011
filing date -
Jul 22, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In signal-component extraction, an input signal is delayed to generate a delayed input signal. The input signal is adaptively filtered with filter coefficients, to generate a filtered signal. The filtered signal is subtracted from the delayed input signal to generate an error signal. A preset reference value is divided by an amplitude of the input signal to generate a gain value. The filter coefficients are derived based on a value obtained by multiplying the input signal and error signal by the gain value or a square of the gain value.
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