Now showing items 41-60 of 137

    • Detection of overlapped acoustic events using fusion of audio and video modalities 

      Butko, Taras; Nadeu Camprubí, Climent (2010)
      Conference report
      Open Access
      Acoustic event detection (AED) may help to describe acoustic scenes, and also contribute to improve the robustness of speech technologies. Even if the number of considered events is not large, that detection becomes a ...
    • EEG signal description with spectral-envelope-based speech recognition features for detection of neonatal seizures 

      Temko, Andrey A.; Nadeu Camprubí, Climent; Marnane, W.; Boylan, G.B.; Lightbody, G. (2011-11-21)
      Article
      Restricted access - publisher's policy
      In this paper, features which are usually employed in automatic speech recognition (ASR) are used for the detection of seizures in newborn EEG. In particular, spectral envelope-based features, composed of spectral powers ...
    • Els Ensenyaments sòcio-humanístics dins de les carreres tècniques a la UPC 

      Nadeu Camprubí, Climent (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1994)
      Article
      Open Access
    • Esquema unificado de parametrización de la señal de voz en reconocimiento del habla 

      Hernando Pericás, Francisco Javier; Nadeu Camprubí, Climent; Vallverdú Bayés, Sisco (Universidad de Valladolid, 1995)
      Conference report
      Open Access
      A correct choice of voice signal modeling methods is essential to obtain good results in automatic speech recognition. In this paper, we have proposed a unified view of the speech parametrization stage, in which conventional ...
    • Estudio comparativo y nuevas propuestas de tecnicas de parametrizacion de la señal de voz para el reconocimiento del habla 

      Clot, J; Hernando Pericás, Francisco Javier; Nadeu Camprubí, Climent (1994)
      Conference report
      Open Access
      A correct choice of voice signal modeling method is essential to obtain good results in automatic speech recogniton. In this paper, a comparative study betwen two speech signal models, Linear Prediction Coeficients and ...
    • Examen Final 

      Nadeu Camprubí, Climent (Universitat Politècnica de Catalunya, 2014-01-14)
      Exam
      Restricted access to the UPC academic community
    • Examen Final 

      Nadeu Camprubí, Climent (Universitat Politècnica de Catalunya, 2015-01-15)
      Exam
      Restricted access to the UPC academic community
    • Examen final del quadrimestre de primavera, curs 2012-2013: enunciat 

      Gasull Llampallas, Antoni; Moreno Bilbao, M. Asunción; Nadeu Camprubí, Climent; Nogueiras Rodríguez, Albino; Salavedra Molí, Josep; Sayrol Clols, Elisa; Vallverdú Bayés, Sisco (Universitat Politècnica de Catalunya, 2013-06-21)
      Exam
      Restricted access to the UPC academic community
    • Examen Parcial 

      Nadeu Camprubí, Climent (Universitat Politècnica de Catalunya, 2014-11-06)
      Exam
      Restricted access to the UPC academic community
    • Extension of the remos concept to frequency-filtering-based features for reverberation-robust speech recognition 

      Maas, Roland; Wolf, Martin; Sehr, Armin; Nadeu Camprubí, Climent; Kellermann, Walter (2011)
      Conference report
      Restricted access - publisher's policy
      The introduction of partly decorrelated features into the REMOS (REverberationMOdeling for Speech recognition) concept for distant-talking speech recognition [1] is discussed. REMOS combines a hidden Markov model (HMM), ...
    • Extraction of syllabically rich and balanced sentences for Tigrigna language 

      Abera, Hafte; Nadeu Camprubí, Climent; Mariam, Sebsibe H. (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference lecture
      Restricted access - publisher's policy
      The Tigrigna language lacks text and speech corpora for developing speech technologies. In this work, after considering the phonetic nature of Tigrigna, we have gathered and pre-processed an initial and relatively large ...
    • Feature decorrelation methods in speech recognition. A comparative study 

      Batlle Mont, Eloi; Nadeu Camprubí, Climent; Rodríguez Fonollosa, José Adrián (International Speech Communication Association (ISCA), 1998)
      Conference report
      Open Access
      In this paper we study various decorrelation methods for the features used in speech recognition and we compare the performance of each one by running several tests with a speech database. First of all we study the ...
    • Filtering of spectral parameters for speech recognition 

      Nadeu Camprubí, Climent (1994)
      Conference report
      Open Access
      The time sequences of speech parameters resulting from current short-time spectral estimators show a tradeoff between estimation error variance and time and frequency resolution. In this paper, we apply frequency analysis ...
    • Filtering the time sequence of spectral parameters for speaker-independent CDHMM word recognition. 

      Nadeu Camprubí, Climent; Pachès Leal, Pau; Juang, B H (ESCA - J.M. PARDO, E. ENRIQUEZ, J. ORTEGA, J. FERREIROS GTM-UPM, 1995)
      Conference report
      Open Access
      In this work, we show how speaker-independent CDHMM word recognition performance can be significantly improved for clean speech by filtering the time sequence of spectral parameters to enhance its time dynamics. Experimental ...
    • Filtering the time sequences of spectral parameters for speech recognition 

      Nadeu Camprubí, Climent; Paches, Pau; Biing-Hwang, Juang (1997-09)
      Article
      Restricted access - publisher's policy
      In automatic speech recognition, the signal is usually represented by a set of time sequences of spectral parameters (TSSPs) that model the temporal evolution of the spectral envelope frame-to-frame. Those sequences are ...
    • Filtros en el dominio de la frecuencia 

      Mariño Acebal, José Bernardo; Masgrau Gómez, Enrique José; Nadeu Camprubí, Climent; Serra, Miquel; Carol Vilanova, Antonio (1985)
      Book
      Open Access
    • Finite State Grammar inference for connected word recognition 

      Mariño Acebal, José Bernardo; Nadeu Camprubí, Climent; Lleida Solano, Eduardo (1988)
      Conference report
      Open Access
      An algorithm that infers a finite state grammar from a language specified by simple erumeration of legal phrases , is introduced. The algorithm processes every phrase as a string of phonetic units (words, syllables, ...
    • Formació Integral dels tècnics i continguts sociohumanístics 

      Nadeu Camprubí, Climent; Mariño Acebal, José Bernardo (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1997)
      Article
      Open Access
    • Frame reduction in LPC isolated word recognition 

      Nadeu Camprubí, Climent; Lleida Solano, Eduardo; Mariño Acebal, José Bernardo (1986)
      Conference report
      Open Access
      It is well know that the pattern matching approach to word-based recognition yields good results when the time aligriment is carried out by means of dynamic programming. However, the high computational expenditure needed ...
    • Frequency analysis of phonetic units for concatenative synthesis in catalan 

      Esquerra Llucià, Ignasi; Febrer, A; Nadeu Camprubí, Climent (Robert H. Mannel and Jordi Robert-Ribes, 1998)
      Conference report
      Open Access
      Knowledge of phonetic unit frequency is very necessary for developing databases in both concatenative synthesis and continuous speech recognition. In the present work, a large corpus of text was processed and phonetically ...