Method and apparatus for encoding and decoding an audio signal
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United States of America Patent
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May 22, 2012
Grant Date -
Aug 27, 2009
app pub date -
Jun 30, 2006
filing date -
Jun 30, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for encoding and decoding an audio signal are provided. The present invention includes receiving an audio signal including a downmix signal and a spatial information signal, if a header is included in the spatial information signal, extracting configuration information from the header, extracting spatial information included in the spatial information signal, and converting the downmix signal to a multi-channel signal using the configuration information and the spatial information. Accordingly, the header can be selectively included in the spatial information signal, thereby if the header is plurally included in the spatial information signal, it is able to decode spatial information in case of reproducing the audio signal from a random point.
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