Recognition of similarity relationships between timestretched spectral structures

IX International Conference on Music Perception and Cognition
Alma Mater Studiorum University of Bologna, August 22-26 2006

Abstract | Testo completo

The purpose of this study is to present a test-based approach for recognizing from the spectral structure of unpitched short sounds (in the 50-100 milliseconds range) whether several time-stretching response functions are perceptually similar. For example, in a spectral composition the problem may be to determine whether the harmonicity/inharmonicity percentage defined in a short temporal scale by mathematical ratios, apply to each different timestretching factor, preserving the object identity. This investigation proposes to evaluate the perceptual information obtained from the audible similarity comparison between the time-stretching models and their reference patterns. Let (a1, . . . , am) be p-dimensional parameters associated with m response models of the same type. This study is concerned with the morphological comparison of a1, . . . , am to individuate the timbral properties that are salient for similarity or identity judgments.