Enviaments recents

  • Estimation of the modulation index of cpm signals using hos 

    Rodríguez Fonollosa, Javier; Rodríguez Fonollosa, José Adrián (Institute of Electrical and Electronics Engineers (IEEE), 1993)
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    Three simple methods are proposed for the estimation of the modulation index of continuous phase modulated signals in noise. These methods employ the estimated autocorrelation and fourth-order cumulant sequences of the ...
  • Performance evaluation of interference cancellation techniques using adaptive antennas 

    Antón Haro, Carles; Rodríguez Fonollosa, José Adrián; Rodríguez Fonollosa, Javier (IEEE Vehicular Technology Society, 1998)
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    Two array-based algorithms, which jointly exploit or compensate for the spatial and temporal characteristics of the propagation channel, are proposed for intercell interference suppression in UMTS scenarios. The first one ...
  • A segmentation algorithm based on acoustical features using a self organizing neural network. 

    Monte Moreno, Enrique (. EUROSPEECH, 1993)
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    In this paper we investigate the use of a self-organizing map in an acoustic segmentation task. The aim is to obtain a limited number of acoustic classes and to segment whenever a change in the class between two adjacent ...
  • Vocoder Design based on HOS 

    Moreno Bilbao, M. Asunción; Rodríguez Fonollosa, José Adrián; Vidal Manzano, José (ESCA, 1993)
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    This paper deals with the application of Higher Order Statistics (HOS) in speech coding. A new model for speech production is implemented and the parameters of the vocal track are obtained from a linear combination of third ...
  • Albayzin speech database: design of the phonetic corpus 

    Moreno Bilbao, M. Asunción; Poig, D; Bonafonte Cávez, Antonio; Lleida, E; Llisterri, J; Mariño Acebal, José Bernardo; Nadeu Camprubí, Climent (. EUROSPEECH, 1993)
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    This paper describes the phonetic content of Albayzin, a spoken database for Spanish designed for speech recognition purposes. A statistical study of a large sample of spontaneous speech is presented, and the phonetic and ...
  • Multiple multilabelling applied to hmm-based noisy speech recognition 

    Hernando Pericás, Francisco Javier; Mariño Acebal, José Bernardo; Moreno Bilbao, M. Asunción; Nadeu Camprubí, Climent (CHINESE INSTITUTE OF ELECTRONICS, 1993)
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  • An efficient algorithm to find the best state sequence in hsmm 

    Bonafonte Cávez, Antonio; Mariño Acebal, José Bernardo (. EUROSPEECH, 1993)
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    Hidden Markov Modeling (HMM) techniques have been applied successfully to speech analysis. However, it has been claimed [1-7] that a major weakness of HMM is that the state duration probability density functions (SDPDF) ...
  • Pitch determination of noisy speech using higher order statistics 

    Moreno Bilbao, M. Asunción; Rodríguez Fonollosa, José Adrián (. IEEE, 1992)
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    The use of third-order statistics to determine the pitch of a speech signal and how they can eliminate the effect of a wide range of noises, including those generated by periodic sources, are shown. The proposed algorithm ...
  • Analytic performance evaluation of cumulant-based fir system identification methods 

    Rodríguez Fonollosa, José Adrián; Mendel, J M (IEEE IEEE PRESS, 1992)
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    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 ...
  • Tecnicas de modelado AR robusto de la señal de voz para reconocimiento del habla en ambientes ruidosos 

    Hernando Pericás, Francisco Javier; Riu, D.; Nadeu Camprubí, Climent (. URSI, 1992)
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