Metadata for Audio 25th International AES Conference 17th to 19th June 2004 London UK
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Paper CD4-1

A System for Harmonic Analysis of Polyphonic Music

Claas Derboven, Markus Cremer
Fraunhofer IIS AEMT, Ilmenau, Germany

A system for harmonic analysis of polyphonic musical signals is presented. The system uses a transform with a nonuniform frequency resolution for the extraction of prominent tonal components and determines the key and the contained chords of a musical input signal with high accuracy. A statistical approach based on the frequency of occurrence of musical notes for determining the key is described. An algorithmic solution for chord determination is presented with a concise explanation. Finally, a qualitative evaluation of the systemís performance is conducted to demonstrate the applicability to real world audio signals.

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