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Convention Paper

A Methodology for Detection of Melody in Polyphonic Musical Signals

Authors: Paiva, Rui Pedro; Mendes, Teresa; Cardoso, Amilcar

AES Convention 116 · Paper 6029 · May 2004

Abstract

We present a bottom-up method for melody detection in polyphonic musical signals. Our approach is based on the assumption that the melodic line is often salient in terms of note intensity (energy). First, trajectories of the most intense harmonic groups are constructed. Next, note candidates are obtained by trajectory segmentation (in terms of frequency and energy variations). Too short, low-energy and octave-related notes are then eliminated. Finally, the melody is extracted by selecting the most important notes at each time, based on their intensity.

We tested our method with excerpts from 12 songs encompassing several genres. In the songs where the solo stands out clearly, most of the melody notes were successfully detected. However, for songs where the melody is not that salient, the algorithm performed poorly. Nevertheless, we could say that the results are encouraging.

Details

Published in
AES Convention 116
AES Convention
116
Paper number
6029
Publication date
May 6, 2004
Session subject
Analysis and Synthesis of Sound
Affiliation
CISUC (Center for Informatics and Systems of the University of Coimbra), Department of Informatics Engineering, University of Coimbra (Polo II), Coimbra, Portugal (See document for exact affiliation information.)
Type
Convention Paper