This page attempts to list the status of various descriptors and algorithms, in aubio as well as in other softwares. Temporal - DC Offset - ... Spectral - spectral centroid - spectral flux - ... High level - onset time - beat time - ... References: - MPEG-7 Multimedia Software Resources http://mpeg7.doc.gold.ac.uk/index.html - MPEG7AudioEnc JAVA http://mpeg7audioenc.sourceforge.net/