Ara es mostren els items 71-90 de 140

    • Joint model-based recognition and localization of overlapped acoustic events using a set of distributed small microphone arrays 

      Chakraborty, Rupayan; Nadeu Camprubí, Climent (2017-12-19)
      Report de recerca
      Accés obert
      In the analysis of acoustic scenes, often the occurring sounds have to be detected in time, recognized, and localized in space. Usually, each of these tasks is done separately. In this paper, a model-based approach to ...
    • Joint recognition and direction-of-arrival estimation of simultaneous meeting-room acoustic events 

      Chakraborty, Rupayan; Nadeu Camprubí, Climent (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Acoustic scene analysis usually requires several sub-systems working in parallel for carrying out the various required functionalities. Focusing to a more integrated approach, in this paper we present an attempt to jointly ...
    • Les tecnologies de la parla: lloc de trobada, difícil però necessària, entre lingüística i tecnologia 

      Nadeu Camprubí, Climent (Publ. Univ. Jaume I, 2012)
      Capítol de llibre
      Accés obert
      La recerca i el desenvolupament d'aplicacions en tecnologies de la parla han deixat força de banda els coneixements lingüístics. Les raons són diverses, com veurem, però la dificultat del treball conjunt de lingüistes i ...
    • Linear prediction of the one-sided autocorrelation sequence for noisy speech recognition 

      Hernando Pericás, Francisco Javier; Nadeu Camprubí, Climent (1997-01)
      Article
      Accés obert
      The article presents a robust representation of speech based on AR modeling of the causal part of the autocorrelation sequence. In noisy speech recognition, this new representation achieves better results than several other ...
    • Machine and deep learning approaches to localization and range estimation of underwater acoustic sources 

      Houégnigan, Ludwig; Safari, Pooyan; Nadeu Camprubí, Climent; André, Michel; Van der Schaar, Mike Connor Roger Malcolm (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This paper introduces ongoing experiments and early results for the underwater localization and range estimation of acoustic sources. Beyond classical results obtained for direction of arrival estimation, results concerning ...
    • Maximum flatness spectral modeling 

      Nadeu Camprubí, Climent (1990-11)
      Article
      Accés obert
    • Model-based processing for acoustic scene analysis 

      Nadeu Camprubí, Climent; Chakraborty, Rupayan; Wolf, Martin (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The analysis of acoustic scenes requires several functionalities, being perhaps recognition (speech, speaker, other acoustic events) and spatial localization the two most relevant ones. For a reduced invasiveness, ...
    • Modelling of the analytic spectrum for speech recognition 

      Nadeu Camprubí, Climent; Lleida, E; Hernando Pericás, Francisco Javier (European Speech Communication Association (ESCA), 1989)
      Text en actes de congrés
      Accés obert
      In this paper, a new spectral representation is introduced and applied to speech recognition. As the widely used LPC autocorrelation technique, it arises from an optimization approach that starts from a set of M+ 1 ...
    • Monolingual and bilingual spanish-catalan speech recognizers developed from SpeechDat databases 

      Mariño Acebal, José Bernardo; Padrell, J; Moreno Bilbao, M. Asunción; Nadeu Camprubí, Climent (C. Draxler, 2000)
      Text en actes de congrés
      Accés obert
      Under the SpeechDat specifications, the Spanish member of SpeechDat consortium has recorded a Catalan database that includes one thousand speakers. This communication describes some experimental work that has been carried ...
    • Multiple multilabeling applied to HMM-based noisy speech recognition 

      Hernando Pericás, Francisco Javier; Mariño Acebal, José Bernardo; Moreno Bilbao, M. Asunción; Nadeu Camprubí, Climent (1993)
      Comunicació de congrés
      Accés obert
      The 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 propose ...
    • Multiple multilabeling to improve HMM-based speech recognition in noise 

      Hernando Pericás, Francisco Javier; Mariño Acebal, José Bernardo; Nadeu Camprubí, Climent (1993)
      Text en actes de congrés
      Accés obert
      The 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 propose ...
    • 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)
      Text en actes de congrés
      Accés obert
    • On building and evaluating a broadcast-news audio segmentation system 

      Butko, Taras; Nadeu Camprubí, Climent (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
    • On frequency averaging for spectral analysis in speech recognition 

      Nadeu Camprubí, Climent; Galindo, F; Padrell, J (Robert H. Mannel and Jordi Robert-Ribes, 1998)
      Text en actes de congrés
      Accés obert
      Many speech recognition systems use logarithmic filter-bank energies or a linear transformation of them to represent the speech signal. Usually, each of those energies is routinely computed as a weighted average of the ...
    • On parameter filtering in continuous subword-unit-based speech recognition 

      Pachès Leal, Pau; Nadeu Camprubí, Climent (H. TIMOTHY BRUMMELL, WILLIAM IDSARDI CITATION DELAWARE, NEW CASTLE, DELAWARE, 1996)
      Text en actes de congrés
      Accés obert
      Simple IIR or FIR filters have been widely used in isolated or connected word recognition tasks to filter the time sequence of speech spectral parameters, since, despite their simplicity, they significantly improve recognition ...
    • On the acoustic environment of a neonatal intensive care unit: initial description, and detection of equipment alarms 

      Raboshchuk, Ganna; Nadeu Camprubí, Climent; Ghahabi Esfahani, Omid; Solvez, Sergi; Muñoz Mahamud, Blanca; Riverola de Veciana, Ana; Navarro Hervas, Santiago (International Speech Communication Association (ISCA), 2014)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The acoustic environment of a typical neonatal intensive care unit (NICU) is very rich and may contain a large number of different sounds, which come either from the equipment or from the human activities taking place in ...
    • On the AR modelling of the one-sided autocorrelation sequence for noisy speech recognition 

      Hernando Pericás, Francisco Javier; Nadeu Camprubí, Climent (University of Alberta, 1992)
      Text en actes de congrés
      Accés obert
      Speech 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 cramer-rao bound of finite-length cepstrum spectral estimators 

      Nadeu Camprubí, Climent; Lleida Solano, Eduardo (Institution of Electrical Engineers, 1990-07)
      Article
      Accés obert
    • On the decorrelation of filter-bank energies in speech recognition 

      Nadeu Camprubí, Climent; Hernando Pericás, Francisco Javier; Gorricho Moreno, Monica (1995)
      Text en actes de congrés
      Accés obert
      Cepstral 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 interaction between time and frequency filtering of speech parameters 

      Macho Ciena, Dusan; Nadeu Camprubí, Climent (Robert H. Mannel and Jordi Robert-Ribes, 1998)
      Text en actes de congrés
      Accés obert
      One of the great today's challenges in speech recognition is to ensure the robustness of the used speech representation. Usually, the recognition rate is strongly reduced when the speech is corrupted, e.g. by convolutional ...