Audio, first used in 1934 refers to “Sound, esp. recorded or transmitted sound … and signals representing this” [Oxford English Dictionary, Oxford 2005, Vol. 1, p. 780].
Metadata is data about data of any sort in any media, describing an individual datum, content item, or a collection of data including multiple content items. In that way metadata facilitates the understanding, characterization, use and management of data.
Audio metadata is structured, encoded data that describes content and representation characteristics of audio entities to facilitate the automatic or semiautomatic identification, discovery, assessment, interpretation, and management of the described entities, as well as their generation, manipulation, and distribution.
Audio metadata predate audio data by centuries. Since antiquity artists and theoreticians alike were interested to classify the effects that could be produced by the combination of different...
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