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Convention Paper

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

Authors: Badeau, Roland; David, Bertrand; Emiya, Valentin; Grenier, Yves

AES Convention 120 · Paper 6644 · May 2006

Abstract

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.

Details

Published in
AES Convention 120
AES Convention
120
Paper number
6644
Publication date
May 6, 2006
Session subject
Analysis and Synthesis of Sound; Mobile Phone Audio; Automobile Audio
Affiliation
Ecole Nationale Supérieure de Télécommunications (See document for exact affiliation information.)
Type
Convention Paper