Noise reduction apparatus and noise reduction method
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United States of America Patent
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Oct 31, 2006
Grant Date -
N/A
app pub date -
Nov 10, 1998
filing date -
Nov 12, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for reducing noise component contained in an input signal has: a detecting device for detecting a level of the noise component; an adjusting device for adjusting a level of the input signal so as to make the level of the noise component equal to or lower than a predetermined threshold level; a reducing device for reducing a signal component of the adjusted input signal whose level is equal to and lower than the predetermined threshold level; and a restoring device for restoring a level of the adjusted input signal to the level of the input signal that has not been adjusted by the adjusting device yet.
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