METHOD AND APPARATUS FOR ENCODING/DECODING SCALABLE DIGITAL AUDIO USING DIRECT AUDIO CHANNEL DATA AND INDIRECT AUDIO CHANNEL DATA

摘要

Disclosed are a method and an apparatus for encoding/decoding scalable digital audio. The scalable digital audio decoding apparatus according to the present invention comprises: an audio packet receiving unit for receiving a digital audio packet including a plurality of direct audio channel data one-to-one mapped to each of physical channels and indirect audio channel data mapped indirectly to each of the physical channels; an indirect audio channel extracting unit for extracting the indirect audio channel data from the digital audio packet; an indirect audio channel decoding unit for generating audio channel data corresponding to the physical channels more than the number of the indirect audio channel data using the indirect audio channel data; and an audio channel outputting unit for one-to-one matching each of the audio channel data to each of the physical channels and outputting the audio channel data.