PROCESSING AUDIO DATA TO PRODUCE METADATA

摘要

A system for automated control of retrieval and output of music audio files, comprises a training input for receiving music audio files each having one or more associated keywords from a set of keywords. An analyser is arranged to convert keywords to M dimensional vectors in a vector space, where M is less than the total number of distinct keywords in the set of keywords. The analyser arranged to sample features of the music audio files and to produce an F dimensional vector in a vector space representing each music audio file. A machine learning module is arranged to derive a conversion between M dimensional vectors and F dimensional vectors. A sample input is arranged to receive a sample audio file, to extract features and to produce a derived F dimensional vector in vector space. A converter is arranged to convert the F dimensional vector to a derived M dimensional vector in vector space using the derived conversion. An output is arranged to allow selection and retrieval of music audio files using the derived M dimensional vector.