Robust HOS-based techniques applied to speech recognition and enchancement
Tipus de documentText en actes de congrés
Data publicació1995
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
We study some speech enhancement algorithms based on the iterative Wiener filtering method due to Lim-Oppenheim [2], where the AR spectral estimation of the speech is carried out using a second-order analysis. But in our algorithms we consider an AR estimation by means of cumulant analysis. This work extends some preceding papers due to the authors, where information of previous speech frames is taken to initiate speech AR modelling of the current frame. Two parameters arc introduced to dessign Wiener filter at first iteration of this iterative algorithm. These parameters arc the Interframe Factor (IF) and the Previous Frame Iteration (PFI). A detailed study of them shows they ailow a very important noise suppression after processing only first iteration of this algorithm, without any appreciable increase of distortion. Finally the simplest cumulant-based algorithm is applied to Speech Recognition and some preliminary results are presented.
CitacióSalavedra, J., Hernando, J., Masgrau, E., Moreno, A. Robust HOS-based techniques applied to speech recognition and enchancement. A: European Conference on Speech Communication and Technology. "EUROSPEECH '95: 4th European Conference on Speech Communication and Technology: Madrid, Spain: 18-21 September 1995". Madrid: 1995, p. 1517-1520.
ISBN1018-4074
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
Robust HOS-base ... ition and enchancement.pdf | 505,5Kb | Visualitza/Obre |