Exploració per autor "Hernando Pericás, Francisco Javier"
Ara es mostren els items 64-83 de 133
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On the AR modelling of the one-sided autocorrelation sequence for noisy speech recognition
(University of Alberta, 1992)
Text en actes de congrés
Accés obertSpeech recognition in noisy environments remains an unsolved problem even in the case of isolated word recognition with small vocabularies. Recently, several techniques have been proposed to alleviate this problem. Concretely, ... -
On the decorrelation of filter-bank energies in speech recognition
(1995)
Text en actes de congrés
Accés obertCepstral coefficients are widely used in speech recognition. In this paper, we claim that they are not the best way of representing the spectral envelope, at least for some usual speech recognition systems. In fact, cepstrum ... -
On the improvement of speaker diarization by detecting overlapped speech
(2010)
Comunicació de congrés
Accés obertSimultaneous speech in meeting environment is responsible for a certain amount of errors caused by standard speaker diarization systems. We are presenting an overlap detection system for far-field data based on spectral ... -
On the use of agglomerative and spectral clustering in speaker diarization of meetings
(2012)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper, we present a clustering algorithm for speaker diarization based on spectral clustering. State-of-the-art diariza- tion systems are based on agglomerative hierarchical clustering using Bayesian Information ... -
On the use of filter bank energies driven from the osa sequence for noisy speech recognition
(INSTITUTE OF ACOUSTICS, 2000)
Text en actes de congrés
Accés obertepresentation of speech signal has shown to be attractive for noisy speech recognition because of both its high recognition performance with respect to the conventional LP in severe conditions of additive broad-band noise ... -
On the use of the derivative of pole trajectories of the LPC analysis parameter sequence as an alternative to delta parameters
(1995)
Text en actes de congrés
Accés obertIn this paper a new approach for modelling time variations in the speech spectra is presented. We propose to approximate the trajectories of the frequency and amplitude of the poles of the LPC spectra with exponential ... -
On the use of the derivative of the pole trajectories of the LPC analysis parameter sequence as an alternative to delta parameters
(ESCA - J.M. PARDO, E. ENRIQUEZ, J. ORTEGA, J. FERREIROS GTM-UPM, 1995)
Text en actes de congrés
Accés obertIn this paper a new approach for modelling time variations in the speech spectra is presented. We propose to approximate the trajectories of the frequency and amplitude of the poles of the LPC spectra with exponential ... -
Optimization of speech parameter weighting for CDHMM word recognition
(1995)
Text en actes de congrés
Accés obertSpeech dynamic feature are routinely used in current speech recognition systems in combination with short-term (static) spectral features. The aim of this paper is to propose a method to automatically estimate the optimum ... -
Overlap detection for speaker diarization by fusing spectral and spatial features
(2010)
Comunicació de congrés
Accés restringit per política de l'editorialA substantial portion of errors of the conventional speaker diarization systems on meeting data can be accounted to overlapped speech. This paper proposes the use of several spatial features to improve speech overlap ... -
Petra : advanced oral interfaces for unified messaging applications
(Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 2005)
Article
Accés obertA new unified messaging system which integrates voice messages, fax and e-mail in a common mailbox has be en developed. The combination of speech and linguistic engineering advances allows a natural oral man-machine ... -
Pitch determination using the cepstrum of the one-sided autocorrelation sequence
(1991)
Text en actes de congrés
Accés obertA novel cepstral function, the cepstrum (CEP) of the one-sided autocorrelation sequence (COSA), is presented and applied to pitch determination of speech signals. This pitch determination algorithm (PDA) starts from the ... -
Ponderación ML de parámetros en un sistema de reconocimiento de palabras basado en CDHMM
(1996)
Comunicació de congrés
Accés obertSpeech dynamic feature are routinely used in current speech recognition systems in combination with short-term (static) spectral features. The aim of this paper is to propose a method to automatically estimate the optimum ... -
Predicción lineal de la parte causal de la autocorrelación para la identificación del locutor en ambientes ruidosos
(Universidad de las Palmas de Gran Canaria, 1994)
Comunicació de congrés
Accés obert -
Predicción lineal de la parte causal de la autocorrelación para la identificación del locutor en ambientes ruidosos
(1994)
Text en actes de congrés
Accés obertRecently, a new parametrization technique based on the AR modelling of the one-sided autocorrelation sequence (OSALPC) has shown to be attractive for speech recognition because of its simplicity and its high recognition ... -
Processament del senyal - Col.lecció de Problemes
(Universitat Politècnica de Catalunya, 2003)
Problema, exercici
Accés obert -
Real-time GPU-based face detection in HD video sequences
(2011)
Comunicació de congrés
Accés restringit per política de l'editorialModern GPUs have evolved into fully programmable parallel stream multiprocessors. Due to the nature of the graphic workloads, computer vision algorithms are in good position to leverage the computing power of these ... -
Reconocimiento del habla en ambientes ruidosos mediante modelos ocultos de Markov discretos
(1992)
Text en actes de congrés
Accés obertSpeech recognition in noisy environments remains an unsolved problem, even in the case of isolated word recognition with small vocabularies. Recently, several techniques have been proposed to alleviate this problem. ... -
Reconocimiento del locutor en telefonia: actividades del proyecto europeo COST 250
(Universidad Politecnica de Madrid, 2000)
Text en actes de congrés
Accés obertEl objetivo de esta comunicación es presentar las actividades realizadas desde noviembre de 1994 dentro del proyecto “Speaker Recognition in Telephony”, financiado por la Comunidad Europea en el marco del programa “European ... -
Reconocimiento del locutor mediante filtrado frecuencial de energías espectrales estimadas por métodos híbridos
(Universidad Politecnica de Madrid, 2000)
Text en actes de congrés
Accés obertSe han explorado dos formas de obtener parámetros más robustos para reconocimiento del locutor: la hibridación de técnicas de análisis espectral y el filtrado frecuencial de las energías de las bandas. Se ha comprobado que ... -
Reconocimiento robusto del habla en presencia de ruido de coche
(1993)
Text en actes de congrés
Accés obertThe performance of existing speech recognition systems degrades rapidly in the presence of background noise when training and testing cannot be done under the same ambient conditions. The aim of this paper is to report the ...
