Exploració per autor "Nadeu Camprubí, Climent"
Ara es mostren els items 61-80 de 140
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Frequency and time filtering of filter-bank energies for HMM speech recognition
Nadeu Camprubí, Climent; Mariño Acebal, José Bernardo; Hernando Pericás, Francisco Javier; Nogueiras Rodríguez, Albino (H. TIMOTHY BRUMMELL, WILLIAM IDSARDI CITATION DELAWARE, NEW CASTLE, DELAWARE, 1996)
Comunicació de congrés
Accés restringit per política de l'editorialIn speech recognition, a discriminative frequency weighting can be achieved by decorrelating the frequency sequence of log mel-scaled filter-bank energies with a computationally inexpensive filter. We show how the spectral ... -
Frequency averaging: a useful multiwindow spectral analysis approach
Nadeu Camprubí, Climent; Padrell, Jaume; Esquerra Llucià, Ignasi (IEEE IEEE, 1997)
Text en actes de congrés
Accés obertThe multiwindow approach is a meaningful framework for nonparametric spectral estimation. It also encompasses several conventional methods as WOSA and frequency-averaged periodogram. Recently, some authors claimed that the ... -
Fuzzy integral based information fusion for classification of highly confusable non-speech sounds
Temko, Andrey A.; Macho Ciena, Dusan; Nadeu Camprubí, Climent (2008)
Article
Accés obertAcoustic event classification may help to describe acoustic scenes and contribute to improve the robustness of speech technologies. In this work, fusion of different information sources with the fuzzy integral (FI), and ... -
Guidelines for producing a database of continuous acoustic environment recordings and child physiological variables in a neonatal intensive care unit
Nadeu Camprubí, Climent; Raboshchuk, Ganna (2017-01-15)
Report de recerca
Accés obert -
IA generativa i ChatGPT. Impacte en l’aprenentatge universitari
Nadeu Camprubí, Climent (2024)
Report de recerca
Accés obertEs presenten de forma planera els elements bàsics de la intel·ligència artificial (IA) generativa. Sobretot es descriuen els models de llenguatge de gran capacitat, que són la base d’eines com el xatbot ChatGPT. A continuació ... -
Improving detection of acoustic events using audiovisual data and feature level fusion
Butko, Taras; Canton Ferrer, Cristian; Segura, C.; Giró Nieto, Xavier; Nadeu Camprubí, Climent; Hernando Pericás, Francisco Javier; Casas Pla, Josep Ramon (2009)
Text en actes de congrés
Accés obertThe detection of the acoustic events (AEs) that are naturally produced in a meeting room may help to describe the human and social activity that takes place in it. When applied to spontaneous recordings, the detection ... -
Improving the robustness of the usual fbe-based asr front-end
Nadeu Camprubí, Climent; Macho, D; Hernando Pericás, Francisco Javier (Mergablum, 2000)
Text en actes de congrés
Accés obertAll speech recognition systems require some form of signal representation that parametrically models the temporal evolution of the spectral envelope. Current parameterizations involve, either explicitly or implicitly, ... -
Inclusion of video information for detection of acoustic events using the fuzzy integral
Butko, Taras; Temko, Andrey A.; Nadeu Camprubí, Climent; Canton Ferrer, Cristian (2008-01-01)
Article
Accés obertWhen applied to interactive seminars, the detection of acoustic events from only audio information shows a large amount of errors, which are mostly due to the temporal overlaps of sounds. Video signals may be a useful ... -
Incorporación de sensores acústicos en el control de regulación a un punto de un robot móvil
Luna Aguilar, Christian Alejandro; Castelán, Mario; Morales Diaz, América; Nadeu Camprubí, Climent (2015)
Text en actes de congrés
Accés obertEste artículo describe el método Diferencia de Tiempo de Llegada (TDOA) para estimar la localización de fuentes acústicas en aplicaciones de regulación a un punto de un robot móvil. Al localizar fuentes acústicas con TDOA ... -
Incorporation of acoustic sensors in the regulation of a mobile robot
Luna Aguilar, Christian Alejandro; Morales Diaz, América; Castelán, Mario; Nadeu Camprubí, Climent (2019-01-17)
Article
Accés obertThis article introduces the incorporation of acoustic sensors for the localization of a mobile robot. The robot is considered as a sound source and its position is located applying a Time Delay of Arrival (TDOA) method. ... -
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 obertIn 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'editorialAcoustic 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 obertLa 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 obertThe 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'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 ...