Toward an analysis of polyphonic music in the textual symbolic segmentation

摘要

The listener is able to identify a melody (motif) within a "sonorous image" created during the performance of music, be it generated by a single voice (monody) or by several simultaneous voices (polyphony). The "sonorous continuum" of a musical piece, in fact, does not exhaust itself in the mere acoustic - perceptive fact, yet it has a meaning that emerges from the structural properties of the musical piece, cognitively processed by the listener and linked back to conceptual structures. This article presents a model of analysis developed so as to identify a melodic line inside a polyphonic musical structure. Study highlights the manner in which the horizontal (monody) and vertical (polyphony) dimensions of a given musical piece must be pondered, on the basis of recent considerations on a harmonic and cognitive level developed respectively by D. de la Motte and D. Huron. The algorithm conceived to this effect was tested on a set of data (scores) of small dimensions serving as a sample.