Ara es mostren els items 1-20 de 101

  • A baseline system for the transcription of catalan broadcast conversation 

    Schulz, Henrik; Rodríguez Fonollosa, José Adrián; Rybach, David (2009-09)
    Comunicació de congrés
    Accés obert
    The paper describes aspects, methods and results of the development of an automatic transcription system for Catalan broadcast conversation by means of speech recognition. Emphasis is given to Catalan language, acoustic ...
  • A Catalan broadcast conversational speech database 

    Schulz, Henrik; Rodríguez Fonollosa, José Adrián (2009-09)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    Data driven methods in speech and linguistic research, and system develoment require appropriate speech databases. A new Catalan speech database has been developed with a particular emphasis on broadcast conversational ...
  • A comparison of several recent methods of fundamental frequency and voicing decision estimation 

    Rodríguez Fonollosa, José Adrián (H. TIMOTHY BRUMMELL, WILLIAM IDSARDI CITATION DELAWARE, NEW CASTLE, DELAWARE, 1996)
    Text en actes de congrés
    Accés obert
    The authors are interested in the comparison of several kinds of methods for fundamental frequency estimation and GCI (glottal closure instant) detection. These methods operate in various domains (time-, frequency- or joint ...
  • A MOOC on approaches to machine translation 

    Ruiz Costa-Jussà, Marta; Formiga, Lluís; Torrillas Tostado, Oriol; Petit Silvestre, Jordi; Rodríguez Fonollosa, José Adrián (2015-12-10)
    Article
    Accés obert
    This paper describes the design, development, and analysis of a MOOC entitled “Approaches to Machine Translation: Rule-based, statistical and hybrid”, and provides lessons learned and conclusions to be taken into account ...
  • A new algorithm for adaptive IIR filtering based on the log-area-ratio parameters 

    Rodríguez Fonollosa, José Adrián; Masgrau Gómez, Enrique José (Elsevier, 1990)
    Text en actes de congrés
    Accés obert
  • A new subtree-transfer approach to syntax-based reordering for statistical machine translation 

    Khalilov, Maxim; Rodríguez Fonollosa, José Adrián; Dras, Mark (2009-05)
    Comunicació de congrés
    Accés obert
    In this paper we address the problem of translating between languages with word order disparity. The idea of augmenting statistical machine translation (SMT) by using a syntax-based reordering step prior to translation, ...
  • A probabilistic method for blind multiuser detection using array observations 

    Antón Haro, Carles; Rodríguez Fonollosa, José Adrián; Rodríguez Fonollosa, Javier (IEEE IEEE, M. VIBERG, J.F. CARDOSO, 1997)
    Text en actes de congrés
    Accés obert
    In this paper, a blind algorithm for detecting active users in a DS-CDMA system is presented. This probabilistic algorithm relies on the theory of hidden Markov models (HMM) and is completely blind in the sense that no ...
  • Acoustic cancellation of engine noise by fast adaptive IIR filtering 

    Masgrau Gómez, Enrique José; Rodríguez Fonollosa, José Adrián (Elsevier, 1990)
    Text en actes de congrés
    Accés obert
  • Adaptive blind equalization using weighted cumulant slices 

    Vidal Manzano, José; Rodríguez Fonollosa, José Adrián (Institute of Electrical and Electronics Engineers (IEEE), 1994)
    Text en actes de congrés
    Accés obert
    Many linear methods have been proposed in the literature to blindly estimate the ARMA parameters of a time series using HOS. Nevertheless, they are mainly off-line and not much has been done in the adaptive case. The method ...
  • Adaptive blind system identification using weighted cumulant slices 

    Vidal Manzano, José; Rodríguez Fonollosa, José Adrián (1996-03)
    Article
    Accés restringit per política de l'editorial
    Many linear methods have been proposed in the literature to blindly estimate the ARMA parameters of a time series using HOS. Nevertheless, they are mainly off-line and not much has been done in the adaptive case. The method ...
  • Adaptive Multistage Vector Quantization 

    Rodríguez Fonollosa, José Adrián; Masgrau Gómez, Enrique José (1989)
    Text en actes de congrés
    Accés obert
    The authors present a novel multiple-stage vector-quantization method that allows the adaptation of the quantizer to the signal to be coded. This adaptation is computationally very simple and is made with no increase in ...
  • Adaptive system identification based on higher-order statistics 

    Rodríguez Fonollosa, José Adrián; Masgrau Gómez, Enrique José (1991)
    Text en actes de congrés
    Accés obert
    The problem of estimating the autoregressive (AR) parameters of a causal AR moving average (ARMA) (p,q) process using higher-order statistic is addressed. It is shown that there is always a linear combination of p+1 slices ...
  • An Ngram-based reordering model 

    Ruiz Costa-Jussà, Marta; Rodríguez Fonollosa, José Adrián (Elsevier, 2009-07)
    Article
    Accés restringit per política de l'editorial
    This paper describes in detail a novel approach to the reordering challenge in statistical machine translation (SMT). This Ngram-based reordering (NbR) approach uses the powerful techniques of SMT systems to generate a ...
  • Analisis estadistico de orden superior de la voz 

    Rodríguez Fonollosa, José Adrián; Moreno Bilbao, M. Asunción (1991)
    Text en actes de congrés
    Accés obert
    Most of the speech analysis methods developed up to date have been based on the autocorrelation function or power spectrum, i. e., the second order statistics of the signa!. In this paper it is shown that higher order ...
  • Analytic performance evaluation of cumulant-based arma system identification methods 

    Rodríguez Fonollosa, José Adrián; Vidal Manzano, José (IEEE IEEE PRESS, 1993)
    Text en actes de congrés
    Accés obert
    The authors perform an analytic study of some cumulant-based methods for estimating the AR parameters of ARMA processes. The analysis includes new AR identifiability results for pure AR process and the analytic performance ...
  • Analytic performance evaluation of cumulant-based fir system identification methods 

    Rodríguez Fonollosa, José Adrián; Mendel, J M (IEEE IEEE PRESS, 1992)
    Text en actes de congrés
    Accés obert
    The covariances of the third- and fourth-order sample cumulants of stationary processes are derived. The resulting expressions are used to obtain the analytical performance of such methods as a function of the coefficients ...
  • Application of hidden markov models to blind channel estimation and data detection in a gsm environment 

    Antón Haro, Carles; Rodríguez Fonollosa, José Adrián; Rodríguez Fonollosa, Javier (1996)
    Text en actes de congrés
    Accés obert
    In this paper, we present an algorithm based on the Hidden Markov Models (HMM) theory to solve the problem of blind channel estimation and sequence detection in mobile digital communications. The environment in which the ...
  • Array joint detection for C/TDMA systems in UMTS environments 

    Antón Haro, Carles; Rodríguez Fonollosa, José Adrián; Rodríguez Fonollosa, Javier (Institute of Electrical and Electronics Engineers (IEEE), 1998)
    Text en actes de congrés
    Accés obert
    Two array-based schemes for intracell and intercell interference suppression are proposed. In both cases, the spatial and temporal characteristics of the propagation are jointly exploited by placing a narrowband beamformer ...
  • Automatic and human evaluation study of a rule-based and a statistical Catalan-Spanish machine translation systems 

    Ruiz Costa-Jussà, Marta; Farrús Cabeceran, Mireia; Mariño Acebal, José Bernardo; Rodríguez Fonollosa, José Adrián (2011)
    Text en actes de congrés
    Accés obert
    Machine translation systems can be classified into rule-based and corpus-based approaches, in terms of their core technology. Since both paradigms have largely been used during the last years, one of the aims in the ...
  • Automatic database acquisition software for ISDN PC cards and analogue boards 

    Rodríguez Fonollosa, José Adrián; Moreno Bilbao, M. Asunción (1998)
    Text en actes de congrés
    Accés obert
    This paper describes an application for automatic speechdatabases acquisition (ADA) developed by the authors in the framework of the EC Telematics Project SpeechDat II. The software is able to work with standard inexpensive ...