ENCODING DEVICE AND ENCODING METHOD
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United States of America Patent
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Issued Date -
Aug 28, 2014
app pub date -
Oct 5, 2012
filing date -
Oct 19, 2011
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Abandoned
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Abstract
An encoding device is disclosed in which frequency domain converters (701, 702) acquire a conversion coefficient in which a frequency band is divided between low end and high end, a sub-band energy calculator (703) divides either the low end or the high end frequency band of the conversion coefficient into a plurality of sub-bands, an importance assessment unit (704) sets a degree of importance for each sub-band, a sparse processor (705), according to the set importance, sets the amplitude value of a specific number of conversion coefficients, from among the plurality of conversion coefficients included in each sub-band, at zero, and a correlation analysis unit (706) calculates the correlation between the corrected conversion coefficient of one frequency band and the conversion coefficient of the other frequency band.
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