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    • A comparative study of parameters and distances for noisy speech recognition 

      Hernando Pericás, Francisco Javier; Nadeu Camprubí, Climent (1991)
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    • A comparative study of techniques for HMM-based noisy speech recognition in noisy car environment 

      Hernando Pericás, Francisco Javier; Nadeu Camprubí, Climent; Mariño Acebal, José Bernardo (Springer, 1993)
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      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 report the ...

    • A fast one-pass-training feature selection technique for GMM-based acoustic event detection with audio-visual data 

      Butko, Taras; Nadeu Camprubí, Climent (2010)
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      Acoustic event detection becomes a difficult task, even for a small number of events, in scenarios where events are produced rather spontaneously and often overlap in time. In this work, we aim to improve the detection ...

    • A flatness-based generalized optimization approach to spectral estimation 

      Nadeu Camprubí, Climent; Bertran Salvans, Miguel (1990-04)
      Article
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      In the optimization formulation, once the known autocorrelations are fixed as constraints, the objective functional completely characterizes the corresponding method of spectral estimation. After observing that this ...

    • A hierarchical architecture with feature selection for audio segmentation in a broadcast news domain 

      Butko, Taras; Nadeu Camprubí, Climent (2010)
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      This work presents a hierarchical HMM-based audio segmentation system with feature selection designed for the Albayzin 2010 Evaluations. We propose an architecture that combines the outputs of individual binary detectors ...

    • A knowledge-based approach to automatic detection of equipment alarm sounds in a neonatal intensive care unit environment 

      Raboshchuk, Ganna; Nadeu Camprubí, Climent; Jancovic, Peter; Peiró Lilja, Alexandre Cristian; Kokuer, Munevver; Muñoz Mahamud, Blanca; Riverola de Veciana, Ana (2017-12-21)
      Article
      Accés obert
      A large number of alarm sounds triggered by biomedical equipment occur frequently in the noisy environment of a neonatal intensive care unit (NICU) and play a key role in providing healthcare. In this paper, our work on ...

    • A multilingual corpus for rich audio-visual scene description in a meeting-room environment 

      Butko, Taras; Nadeu Camprubí, Climent; Moreno Bilbao, M. Asunción (ACM Press. Association for Computing Machinery, 2011)
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      In this paper, we present a multilingual database specifically designed to develop technologies for rich audio-visual scene description in meeting-room environments. Part of that database includes the already existing ...

    • A neural network approach for automatic detection of acoustic alarms 

      Peiró Lilja, Alexandre; Raboshchuk, Ganna; Nadeu Camprubí, Climent (Scitepress, 2017)
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      Acoustic alarms generated by biomedical equipment are relevant sounds in the noisy Neonatal Intensive Care Unit (NICU) environment both because of their high frequency of occurrence and their possible negative effects on ...

    • A novel approach to real-time range estimation of underwater acoustic sources using supervised machine learning 

      Houégnigan, Ludwig; Safari, Pooyan; Nadeu Camprubí, Climent; Van der Schaar, Mike Connor Roger Malcolm; André, Michel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
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      The proposed paper introduces a novel method for range estimation of acoustic sources, both cetaceans and industrial sources, in deep sea environments using supervised learning with neural networks in the contex of a single ...

    • A simple spectrum estimation technique based on the analytic cepstrum 

      Nadeu Camprubí, Climent (1990)
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    • A Unified Parameterization Scheme for Noisy Speech Recognition 

      Hernando Pericás, Francisco Javier; Nadeu Camprubí, Climent (ESCA, 1997)
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      LP-based and mel-cepstrum coefficients are by far the most prevalent parameterization techniques in speech recognition. The conventional LP technique is known to be very sensitive to the presence of additive noise and there ...

    • Acoustic event detection based on feature-level fusion of audio and video modalities 

      Butko, Taras; Canton Ferrer, Cristian; Segura Perales, Carlos; Giró Nieto, Xavier; Nadeu Camprubí, Climent; Hernando Pericás, Francisco Javier; Casas Pla, Josep Ramon (HINDAWI, 2011-03-15)
      Article
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      Acoustic event detection (AED) aims at determining the identity of sounds and their temporal position in audio signals. When applied to spontaneously generated acoustic events, AED based only on audio information shows a ...

    • Acoustic event detection: SVM-based system and evaluation setup in CLEAR’07 

      Temko, Andrey A.; Nadeu Camprubí, Climent; Isaac, Joan Biel (2008)
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      In this paper, the Acoustic Event Detection (AED) system developed at the UPC is described, and its results in the CLEAR evaluations carried out in March 2007 are reported. The system uses a set of features composed of ...

    • Acoustic study of a neonatal intensive care unit: preliminary results 

      Raboshchuk, Ganna; Nadeu Camprubí, Climent; Muñoz Mahamud, Blanca; Riverola de Veciana, Ana; Navarro Hervas, Santiago (Copicentro Granada, 2014)
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      The acoustic environment of a typical neonatal intensive care unit is very rich and may contain a large number of di erent sounds, which reflect the activities taking place in it. There exists a medical concern about the ...

    • 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 ...

    • Albayzin-2010 audio segmentation evaluation: evaluation setup and results 

      Butko, Taras; Nadeu Camprubí, Climent; Schulz, Henrik (2010)
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      In this paper, we present the audio segmentation task from the Albayzín-2010 evaluation, and the results obtained by the eight participants from Spanish and Portuguese universities. The evaluation task consisted of the ...

    • An alternative approach to implement a recursive interpolation 

      Lagunas Hernandez, Miguel A.; Mariño Acebal, José Bernardo; Nadeu Camprubí, Climent; Figueiras Vidal, Aníbal R. (Institute of Electrical and Electronics Engineers (IEEE), 1981)
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    • Análisis espectral de series meteorológicas 

      Nadeu Camprubí, Climent; Gasull Llampallas, Antoni; Figueiras Vidal, Aníbal R. (1981)
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    • AR modeling of the speech autocorrelation to improve noisy speech recognition 

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

    • Audio segmentation of broadcast news : a hierarchical system with feature selection for the Albayzin-2010 evaluation 

      Butko, Taras; Nadeu Camprubí, Climent (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
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      In this paper, we present an audio segmentation system for broadcast news, and its results in the Albayzin-2010 evaluation. First of all, the Albayzin-2010 evaluation setup, developed by the authors, is presented; in ...