The Recommendation considering that that metadata will be accompanying most audio broadcast transmissions in the future; that the automatic generation of metadata will be necessary to offer a complete, cost-efficient service in future; that query-by-humming systems enable a natural way to query audio databases.
ITU-R BS.1693 FRENCH-2004 history
2004ITU-R BS.1693 FRENCH-2004 Procedure for the performance test of automated query-by-humming systems