#100 Independent Manipulation of High-Level Spectral Envelope Shape Features for Sound Morphing by Means of Evolutionary Computation
Marcelo Caetano, Xavier Rodet
The aim of sound morphing is to obtain a sound that falls percep-tually between two (or more) sounds. Ideally, we want to morph perceptually relevant features of sounds and be able to independ-ently manipulate them. In this work we present a method to ob-tain perceptually intermediate spectral envelopes guided by high-level spectral shape descriptors and a technique that employs evolutionary computation to independently manipulate the tim-bral features captured by the descriptors. High-level descriptors are measures of the acoustic correlates of salient timbre dimen-sions derived from perceptual studies, such that the manipulation of the descriptors corresponds to potentially interesting timbral variations.