Distance-based versus Tree-based Key Recognition in Musical Audio
Gaétan Martens, Hans De Meyer, Bernard De Baets, Marc Leman, Micheline Lesaffre, J.-P. Martens, Tom De Mulder · 2003
A new method for the recognition of the tonal center or key in a musical audio signal is presented. Time-varying key feature vectors of 264 synthesized sounds are extracted from an auditory-based pitch model and converted into character strings using PCA-analysis and classification trees. Results are compared with distance-based methods.