Method and apparatus for encoding and decoding audio signal using adaptive sinusoidal coding
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United States of America Patent
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Feb 2, 2016
Grant Date -
Oct 16, 2014
app pub date -
Jun 26, 2014
filing date -
Feb 16, 2009
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Abstract
A method and an apparatus for encoding and decoding audio signals using adaptive sinusoidal coding are provided. The audio signal encoding method includes the steps of dividing a synthesized audio signal into a plurality of sub-bands, calculating the energy of each sub-band, selecting a predetermined number of sub-bands having a relatively large amount of energy from the sub-bands, and performing sinusoidal coding with regard to the selected sub-bands. Application of sinusoidal coding based on consideration of the amount of energy of each sub-band of the synthesized signal improves the quality of the synthesized signal more efficiently.
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