Spectral analysis, editing, and resynthesis: methods and applications
Tristan Murail, Michael Klingbeil · 2009
This document describes the design, development, and applications of cross-platform software for audio analysis, editing, and resynthesis. Analysis is accomplished using a variation of the McAulay-Quatieri technique of peak interpolation and partial tracking. Linear prediction of the partial amplitudes and frequencies is used to determine the best continuations for sinusoidal tracks. A high performance user interface supports flexible selection and immediate manipulation of analysis data, cut and paste, and unlimited undo/redo. Hundreds of simultaneous partials can be synthesized in real-time and documents may contain thousands of individual partials dispersed in time without degrading performance. A variety of standard file formats, including the Sound Description Interchange Format (SDIF), are supported for import and export of analysis data. Specific musical and compositional applications, including those in works by the author, are discussed.