Archivio Storico:- ex Dipartimento di Musica e Spettacolo - Universita' di Bologna
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As has been pointed out, BWF is an advanced real life example for combining sound and (technical) metadata in a comprehensive file format for broadcasting storage and retrieval applications as well as for programme exchange between different partners. One of the outmost advantages of the approach transporting all necessary metadata within the sound files themselves is easy management of sound files and metadata in the LAN and across different hard- and software platforms. For the archive or library starting from scratch, a medium size digitisation project can be evolved on learning by doing and just by implementing a minimum standard as BWF requests. For up to several ten thousands of sound files of a homogenous collection, general purpose computer systems and file archive servers provide file management and browsing tools convenient for use.
Larger collections will not succeed without additional data base management and a specified file system structure. Links from (or to) an existing catalogue have to be updated at regular intervals and sound and metadata should be ”frozen”. In any case, before digitising, libraries and archives should think very carefully about implementing appropriate file naming conventions for sound files and associated documents along content related classification or indexing schemes in order to support effective data retrieval later on.
The current BWF structure is certainly superior when the percentage of metadata associated to sound is small in comparison to the data size of the sound itself. It is applicable when search and browsing is primarily done on the basis of listening to sound data and not by cruising through large volumes of content related metadata. One very useful extension of the BWF concept could be providing appropriate links to recently evolving content description standards as MPEG-7 promises to become.
Archivio Storico:- ex Dipartimento di Musica e Spettacolo - Universita' di Bologna
