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Harmonic Plus Noise Decomposition: Time-frequency Reassignment Versus a Subspace Based Method

This work deals with the Harmonic+Noise decomposition and, as targeted application, to extract transient background noise surrounded by a signal having a strong harmonic content (speech for instance). In that perspective, a method based on the reassigned spectrum and a High Resolution subspace tracker are compared, both on simulations and in a more realistic manner. The reassignment re-localizes the time-frequency energy around a given pair (analysis time index, analysis frequency bin) while the High Resolution method benefits from a characterization of the signal in terms of a space spanned by the harmonic content and a space spanned by the stochastic content. Both methods are adaptive and the estimations are updated from a sample to the next.

Authors: Badeau, Roland; David, Bertrand; Emiya, Valentin; Grenier, Yves
Affiliation: Ecole Nationale Supérieure de Télécommunications
AES Convention:120 (May 2006) Paper Number:6644 Import into BibTeX
Session Subject:Analysis and Synthesis of Sound; Mobile Phone Audio; Automobile Audio

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