Definitions

Technical metadata is

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[m]etadata that describes the technical state of and process used to create a file. Often closely related either to its file format or the original software used to create the file, e.g. scanning equipment and settings used to create or modify a digital object.[1]

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information that describes specific attributes of an audio object. For a physical source object, some of these attributes might include material composition, dimensions, audio signal characteristics, and condition. For a digital file, they might include sampling rate, bit depth, data encoding type, checksum value, and other information necessary to reproduce the information.[2]

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References