DBTune hosts SPARQL end-points exposing interlinked music related data from Magnatune, Jamendo, The BBC John Peel sessions, Last-FM, MySpace and MusicBrainz.It also provides the basis for numerous extensions including musicological and content-based features. RDF and Audio Features The Audio Feature Ontology can be used to express content based audio features in RDF format used on the Semantic Web.GNAT is a small audio collection tool to associate local audio files with semantic web URIs.More information about the above (and related) SPARQL-endpoints can be found here. SAWA is a web application which ties some of the previously mentioned technologies together.The ontology is available here (RDF resource): Sonic Annotator and SAWA can be used to produce annotations in this format. It can be used as reference to familiarise yourself with Content-based Audio Analysis, Vamp Plugins, RDF and the Audio Feature Ontology. How to install Sonic Visualiser and a Vamp plugin (Mac OSX) Matthias Mauch, November 2010.Analysing temperament in Sonic Visualiser Dan Stowell, December 2010.Annotating Bar and Beat Numbers Dan Leech-Wilkinson, July 2012.Mapping Rubato and Loudness Dan Leech-Wilkinson, July 2012.Mapping Melody Dan Leech-Wilkinson, July 2012.Tutorial A tutorial presented at the ISMIR conference last year provides lots of useful information about the technologies above, however it's main focus is "Music and the Semantic Web" a.k.a.SAWA can be used to automatically extract features in batch from a small collection of uploaded audio files using several Vamp plugins at once. A Sonic Visualiser chord labelling example Matthias Mauch, March 2010.A Sonic Visualiser audio and data visualisation example Matthias Mauch, February 2010.SONIC VISUALISER INSTALL PLUGIN WINDOWS.
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