Recherche
Recherche simple
Recherche avancée
Panier électronique
Votre panier ne contient aucune notice
Connexion à la base
Identification
(Identifiez-vous pour accéder aux fonctions de mise à jour. Utilisez votre login-password de courrier électronique)
Entrepôt OAI-PMH
Soumettre une requête
| Consulter la notice détaillée |
| Version complète en ligne |
| Version complète en ligne accessible uniquement depuis l'Ircam |
| Ajouter la notice au panier |
| Retirer la notice du panier |
English version
(full translation not yet available)
Liste complète des articles
|
Consultation des notices
%0 Conference Proceedings
%A Depalle, Philippe
%A Hélie, Thomas
%T Extraction of spectral peak parameters using a short-time Fourier transform modeling and no sidelobe windows
%D 1997
%B the IEEE Workshop on Applications of Signal Processing on Audio and Acoustics
%C Mohonk
%P 1-4
%F Depalle97d
%X A new method which improves the estimation of frequency, amplitude and phase of the partials of a sound is presented. It allows the reduction of the analysis-window size from four periods to two periods. It therefore gives better accuracy in parameter determination, and has proved to remain efficient at low signal-to-noise ratios. The basic idea consists of using a parametric modeling of the short-time Fourier Transform. The method alternately estimates the complex amplitudes and the frequencies starting from the result of the classical analysis method. It uses least-square procedure and a first-order limited expansion of the model around previous estimations. This method lead us to design new windows which do not have any sidelobe in order to help the convergence. Finally an analysis algorithm which has been built according to the observed behavior of the method for various kinds of sound is presented.
%1 6
%2 3
%U http://articles.ircam.fr/textes/Depalle97d/
|
|