Patent ID: 8645146
Filing Date: 2014-02-04
Classification: G10L

Abstract:
1. A method of decoding a compressed audio bitstream containing syntax elements conforming to a bitstream syntax, the bitstream syntax defining a channel extension coding layer for coding a portion of audio content using a channel extension coding and a base peak coding layer for coding a portion of audio content using a sparse spectral peak coding, the method comprising: reading the channel extension coding layer of the compressed audio bitstream; parsing a plurality of syntax elements from the channel extension coding layer specifying parameters used in the channel extension coding; reading the base peak coding layer of the compressed audio bitstream; parsing a plurality of syntax elements from the base peak coding layer specifying parameters used in the sparse spectral peak coding; and processing coded audio content of the channel extension coding layer and the base peak coding layer to reconstruct the portion of audio content in an output audio signal.