A Model of Retroactive Tone-Center Perception

Journal/Book: Music Percept. 1995; 12: Journals Dept, 2120 Berkeley Way, Berkeley, CA 94720. Univ Calif Press. 439-471.

Abstract: In this paper, a model for tone-center perception is developed. It is based on an auditory model and principles of schema dynamics such as self-organization and association. The auditory module simulates virtual-pitch perception by transforming musical signals into auditory images. The schema-based module involves data-driven long-term learning for the self-organization of a schema for tone-center perception. The focus of this paper is on a retroactive process (called perceptual interpretation) by which the sense of tone center is adjusted according to a reconsideration of preceding perceptions in view of new contextual evidence within the schema. To this purpose, a metaphor is introduced, in which perceptual interpretation is described as the movement of a snaillike object in an attractor space. Additionally, the mathematical details of the model are presented, and the results of computer simulations are discussed.

Note: Article M Leman, State Univ Ghent, Inst Psychoacoust & Electr Mus, Blandijnberg 2, B-9000 Ghent, Belgium

Keyword(s): VIRTUAL-PITCH; ORGANIZATION; COGNITION; PATTERNS

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