Analysis and Synthesis of Tones by Spectral Interpolation

A technique is presented for the analysis and digital resynthesis of instrumental sounds. The technique is based on a model that uses interpolation of amplitude spectra to reproduce short-time spectral variations. The main focus of this work is the analysis algorithm. Starting from a digital recording the authors were able to compute automatically the parameters of this model. Two analysis/synthesis methods are studied based on spectral interpolation. The first uses only spectral interpolation. The second method is a hybrid in which a sampled attack is spliced onto a sustain synthesized via spectral interpolation