Hans-Peter Hutter

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This paper summarizes the main results from the Speaker Veriication (SV) research pursued so far in the CAVE project. Diierent state-of-the art SV algorithms were implemented in a common HMM framework and compared on two databases : YOHO (of-ce environment speech) and SESP (telephone speech). This paper is concerned with the diierent design issues for(More)
The issue of a priori threshold setting in speaker veri-cation is a key problem for eld applications. In the context of the CAVE project, we compared several methods for estimating speaker-independent and speaker-dependent decision thresholds. Relevant parameters are estimated from development data only, i.e. without resorting to additional client data. The(More)
R ESUM E Cet article pr esente un panorama des activit es de recherche men ees dans le cadre du projet europ een LE-Telematics CAVE, sur la v eriication du locuteur a travers le r eseau t el ephonique. Nous pr esentons tout d'abord les principes des algorithmes sur lesquels repose notre syst eme de v eri-cation. Nous d ecrivons ensuite le protocole et la(More)
This paper compares a newly proposed hybrid con-nectionist-SCHMM approach [5] with other hybrid a p proaches. In the new approach a multilayer perceptron (MLP) replaces the conventional codebooks of semi-continuous HMMs. The MLP is therefore trained on s w d k d basic elements (phones and phone parts) in such a way that the outputs of the network estimate(More)
Energy-efficient buildings need mechanical ventilation. However, there are concerns that inadequate mechanical ventilation may lead to impaired indoor air quality. Using a semi-experimental field study, we investigated if exposure of occupants of two types of buildings (mechanical vs. natural ventilation) differs with regard to indoor air pollutants and(More)
The rapid increase in mobile phone use in young people has generated concern about possible health effects of exposure to radiofrequency (RF) and extremely low frequency (ELF) electromagnetic fields (EMF). MOBI-Kids, a multinational case-control study, investigates the potential effects of childhood and adolescent exposure to EMF from mobile communications(More)