Abstract
Today, many applications in Music Information Retrieval (MIR) employ audio features which have been tailored individually by the algorithm developers. For a broader use also in commercial applications, MIR technology can benefit significantly from a ‘‘common language’’ in audio signal description that can be used to annotate any type of multimedia assets in order to facilitate search and retrieval according to a wide range of conceivable criteria in an interoperable way. The audio part of the ISO/MPEG-7 ‘‘Multimedia Content Description Interface’’ provides such a common signal description language by defining a rather comprehensive set of standardized features [called ‘‘low level descriptors’’ (LLDs)], application-centric subsets, and a unified way of exchanging this data based on XML. The talk provides an overview of the MPEG-7 Audio tool chest, including existing and forthcoming extensions. While the idea is clearly to create a universal platform for any conceivable MIR task, some of the initially conceived applications of MPEG-7 Audio are illustrated.
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