Study of spectro-temporal parameters in musical performance for expressive instrument synthesis

Modeling expressive synthesis requires one to deal with a wide range of sound´s behaviors that include spectral dynamics which are idiomatic to the instrument or characteristics of the playing technique. In the paper we analyze short time evolution of power-spectral envelopes, adaptively changing the analysis parameters so as to variably include filter envelopes, and the pitched excitation parts. Typical sequences of sound features are obtained from quantized sequences of parameters. By applying string matching techniques, new sequences of features are created and new sounds that have dynamically changing temporal behavior are re-synthesized