METHOD AND APPARATUS FOR ENCODING/DECODING SCALABLE DIGITAL AUDIO USING UNCOMPRESSED AUDIO CHANNEL DATA AND COMPRESSED AUDIO CHANNEL DATA

摘要

A method and an apparatus for encoding/decoding scalable digital audio are disclosed. The apparatus for decoding scalable digital audio according to the present invention includes: an audio packet receiving unit which receives digital audio packets including a plurality of uncompressed audio channel data respectively maintained at an uncompressed state and a plurality of compressed audio channel data generated by compressing audio channel data corresponding to physical channels; a compressed audio channel extraction unit which extracts the compressed audio channel data from the digital audio packets; a compressed audio channel decoding unit which generates audio channel data corresponding to a number of the physical channels that is greater than the number of the compressed audio channel data using the compressed audio channel data; and an audio channel output unit which matches the audio channel data to the physical channels one-to-one and outputs the matched audio channel data.