Tracking partials for the sinusoidal modeling of polyphonic sounds

The paper proposes to improve further the tracking of partials in a polyphonic context. Spectral characteristics of the controlling parameters (amplitude and frequency) are taken into account to ensure that these parameters evolve slowly with time. The resulting algorithm tracks closely-spaced sinusoids better and is able to avoid most of the spectral data belonging to noise. As a consequence, the proposed algorithm extracts a more meaningful sinusoidal representation from polyphonic recordings.