Metadata for Audio 25th International AES Conference 17th to 19th June 2004 London UK
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Poster CD2-2

Percussion-Related Semantic Descriptors of Music Audio Files

Perfecto Herrera1, Vegard Sandvold2, Fabien Gouyon1
1Universitat Pompeu Fabra, Barcelona, Spain
2University of Oslo, Oslo, Sweden

Automatic extraction of semantic music content metadata from polyphonic audio files has traditionally focused on melodic, rhythmic, and harmonic aspects. In the present paper we will present several music content descriptors that are related to percussion instrumentation. The "percussion index" estimates the amount of percussion that can be found in a music audio file and yields a (numerical or categorical) value that represents the amount of percussion detected in the file. A further refinement is the "percussion profile," which roughly indicates the existing balance between drums and cymbals. We finally present the "percusiveness" descriptor, which represents the overall impulsiveness or abruptness of the percussive events. Data from initial evaluations, both objective (i.e., errors, misses, false alarms) and subjective (usability, usefulness) will also be presented and discussed.

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