Exploració per autor "Nadeu Camprubí, Climent"
Ara es mostren els items 75-94 de 140
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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'editorialThis 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'editorialThe 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 obertIn 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 obertUnder 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 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 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 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 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
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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 obertMany 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 obertSimple 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'editorialThe 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 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 cramer-rao bound of finite-length cepstrum spectral estimators
Nadeu Camprubí, Climent; Lleida Solano, Eduardo (Institution of Electrical Engineers, 1990-07)
Article
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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 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 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 obertOne 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 ... -
On the potential of channel selection for recognition of reverberated speech with multiple microphones
Wolf, Martin; Nadeu Camprubí, Climent (2010)
Text en actes de congrés
Accés obertThe performance of ASR systems in a room environment with distant microphones is strongly affected by reverberation. As the degree of signal distortion varies among acoustic channels (i.e. microphones), the recognition ... -
Optimization algorithms for estimating modulation spectrum domain filters
Pachès Leal, Pau; Rose, R; Nadeu Camprubí, Climent (G. Olaszy, G. Németh, K. Erdohegyi, 1999)
Text en actes de congrés
Accés obertThe goal of the work described in this paper is to develop and evaluate procedures for automatic estimation of modulation spectrum filters to compensate for distortions in the modulation spectrum domain. The modulation ... -
Pitch determination using the cepstrum of the one-sided autocorrelation sequence
Nadeu Camprubí, Climent; Pascual Gilabert, Jordi; Hernando Pericás, Francisco Javier (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 ... -
Pre-processing techniques for improved detection of vocalization sounds in a neonatal intensive care unit
Raboshchuk, Ganna; Nadeu Camprubí, Climent; Vidiella Pinto, Sergio; Ros Fornells, Oriol; Muñoz Mahamud, Blanca; Riverola de Veciana, Ana (2018-01-01)
Article
Accés obertThe sounds occurring in the noisy acoustical environment of a Neonatal Intensive Care Unit (NICU) are thought to affect the growth and neurodevelopment of preterm infants. Automatic sound detection in a NICU is a novel and ...