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BpmDj Meta-Data Extraction

Werner Van Belle1 - werner@yellowcouch.org, werner.van.belle@gmail.com

1- Yellowcouch;

Abstract :  The presentation covers all meta data extraction aspects in BpmDj. It starts with explaining different techniques to measure tempo (energy enveloppe spectra, autocorrelation, peak detectors, ray-shooting and realtime tempo extraction). Beatgraphs are introduced, spectrum measurement based on the psychoacoustic bark scale is covered as well as echo characteristic, rythm and composition extraction. SVD / PCA analysis is used to map a multidimensional spectrum space to 3 primary colors.

Reference:  Werner Van Belle; BpmDj Meta-Data Extraction; Presented at the Music Conservatorium, Hoyskolen Tromso; Norway; April 2005