Archivio Storico:- ex Dipartimento di Musica e Spettacolo - Universita' di Bologna
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Broadcast WAVE Format (BWF)
As libraries and archives receive music documents from quite different sources and their users occasionally are located in a broadcasting environment, in future many sound files stored in BWF format may appear. Although libraries could consider BWF as a useful library standard, it seems questionable to convert all digital audio holdings into BWF as long as audio file transfer with broadcasters is not needed often. BWF stands for a comprehensive method to include metadata and links to additional descriptive information in sound files but alternative solutions taking advantage from the possibility to define user chunks in the RIFF/WAVE format can be expected to arise. It should be emphasised that sound data of standard linear coded WAVE files remain playable with any wave-player available whether or not additional chunks are included; whereas the content of user chunks needs to be managed by special application software components.
BWF does not support all types of RIFF chunks; nevertheless it is compatible to ISO OSI layer model for information interchange. BWF files can be used independently from the transport layer for data exchange in real time and file transfer over networks as well as for signal storage on data carriers such as disks or tapes. One single BWF file is capable to hold about 4 Gbytes of data, corresponding approximately up to 6 hours of linear stereo sound signal (16 bit / 48 kHz) or 4 hours (24 bit / 48 kHz). This size of data volume is sufficient for the storage and reproduction of almost all analogue sound carrier volumes commonly used.
Archivio Storico:- ex Dipartimento di Musica e Spettacolo - Universita' di Bologna
