For more than 10 years the term MPEG (Moving Picture Experts Group) has been synonymous with successful standardization in the field of audiovisual coding. The well-known standards MPEG-1, MPEG-2, and MPEG-4 have defined the state of the art in the perceptual coding of multimedia content. More recently the MPEG standards group (ISO/IEC JTC1/SC29/WG11) has extended its traditional scope by initiating the MPEG-7 standardization process, which aims to define a unified interface for the description and characterization of multimedia content. An overview of the goals, ideas, and concepts behind MPEG-7 is provided, with particular emphasis on the audio part of the emerging standard.
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