Spectral Tools for Dynamic Tonality and Audio Morphing

摘要

The analysis-resynthesis method used by the Spectral Toolbox allows the independent control of both frequency and amplitude for every partial in a given sound. However, because a typical musical sound consists of tens or even hundreds of audible partials, it is apparent that their individual manipulation is not necessarily practical. To reduce information load and retain musical relevance, there is need for an organizational routine that parameterizes spectral information in a simple and musically meaningful interface. The Spectral Toolbox has addressed this problem by providing three different routines: (1) mapping partials to a fixed destination, (2) morphing between different spectra, and (3) Dynamic Tonality.