An input profile is generated from an input audio file using a measurable attribute that was also used to generate reference profiles from reference audio files. The input profile is then subjected to a process that was also used to generate a reference profiles tree, which is structured as a sparse...http://www.google.de/patents/US7715934?utm_source=gb-gplus-sharePatent US7715934 - Identification of input files using reference files associated with nodes of a sparse binary tree
