María del Carmen Benítez Ortúzar

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María del Carmen Benítez Ortúzar

Administrative data

Full member researcher

  • Position in UGR: Tenure professor
    Department where s/he teaches: Teoría de la Señal, Telemática y Comunicaciones
    Research group: TIC-123

Contributions and research experience

Publications in ISI SCI

  • A Deep Neural Networks Approach to Automatic Recognition Systems for Volcano-Seismic Events
    Author-s: Titos, Manuel; Bueno, Angel; Garcia, Luz; Benitez, Carmen
    Source: IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 11 5 1533 1544 2018
  • Automatic Detection of Long Period Events Based on Subband-Envelope Processing
    Author-s: Garcia, Luz; Alvarez, Isaac; Titos, Manuel; Diaz-Moreno, Alejandro; Carmen Benitez, M.; de la Torre, Angel
    Source: IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 10 11 5134 5142 2017
  • APASVO: A free software tool for automatic P-phase picking and event detection in seismic traces
    Author-s: Emilio Romero, Jose; Titos, Manuel; Bueno, Angel; Alvarez, Isaac; Garcia, Luz; de la Torre, Angel; Carmen Benitez, Ma
    Source: COMPUTERS & GEOSCIENCES 90 220 10 2016
  • A Comparative Study of Dimensionality Reduction Algorithms Applied to Volcano-Seismic Signals
    Author-s: Cortes, Guillermo; Carmen Benitez, M.; Garcia, Luz; Alvarez, Isaac; Ibanez, Jesus M.
    Source: IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 9 1 253 263 2016
  • Using neurofeedback for English phonetics learning: potentiality of MMN
    Author-s: Garcia, L.; Benitez, C.; Macizo, P.; Bajo, T.
    Source: ELECTRONICS LETTERS 51 22 10 2015
  • Sub-band based histogram equalization in cepstral domain for speech recognition
    Author-s: Joshi, Vikas; Bilgi, Raghvendra; Umesh, S.; Garcia, Luz; Benitez, Carmen
    Source: SPEECH COMMUNICATION 69 46 65 2015
  • Discriminative Feature Selection for Automatic Classification of Volcano-Seismic Signals
    Author-s: Alvarez, Isaac; Garcia, Luz; Cortes, Guillermo; Benitez, Carmen; De la Torre, Angel
    Source: IEEE GEOSCIENCE AND REMOTE SENSING LETTERS 9 2 151 155 2012
  • Identifying bubble collapse in a hydrothermal system using hidden Markov models
    Author-s: Dawson, Phillip B.; Benitez, M. C.; Lowenstern, Jacob B.; Chouet, Bernard A.
    Source: GEOPHYSICAL RESEARCH LETTERS 39 -1 -1 2012
  • Continuous HMM-based seismic-event classification at Deception Island, Antarctica
    Author-s: Benitez, M. C.; Ramirez, Javier; Segura, Jose C.; Ibanez, Jesus M.; Almendros, Javier; Garcia-Yeguas, Araceli; Cortes, Guillermo
    Source: IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 45 1 138 146 2007
  • An effective subband OSF-based VAD with noise reduction for robust speech recognition
    Author-s: Ramirez, J; Segura, JC; Benitez, C; de la Torre, A; Rubio, A
    Source: IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING 13 6 1119 1129 2005
  • Statistical voice activity detection using a multiple observation likelihood ratio test
    Author-s: Ramirez, J; Segura, JC; Benitez, C; Garcia, L; Rubio, A
    Source: IEEE SIGNAL PROCESSING LETTERS 12 10 689 692 2005
  • Histogram equalization of speech representation for robust speech recognition
    Author-s: de la Torre, A; Peinado, AM; Segura, JC; Perez-Cordoba, JL; Benitez, MC; Rubio, AJ
    Source: IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING 13 3 355 366 2005
  • Cepstral domain segmental nonlinear feature transformations for robust speech recognition
    Author-s: Segura, JC; Benitez, C; de la Torre, A; Rubio, AJ; Ramirez, J
    Source: IEEE SIGNAL PROCESSING LETTERS 11 5 517 520 2004
  • Efficient voice activity detection algorithms using long-term speech information
    Author-s: Ramirez, J; Segura, JC; Benitez, C; de la Torre, A; Rubio, A
    Source: SPEECH COMMUNICATION 42 3-4 271 287 2004
  • A new Kullback-Leibler VAD for speech recognition in noise
    Author-s: Ramirez, J; Segura, JC; Benitez, C; de la Torre, A; Rubio, AJ
    Source: IEEE SIGNAL PROCESSING LETTERS 11 2 266 269 2004
  • Discriminative feature weighting for HMM-based continuous speech recognizers
    Author-s: de la Torre, A; Peinado, AM; Rubio, AJ; Segura, JC; Benitez, C
    Source: SPEECH COMMUNICATION 38 3-4 267 286 2002
  • Different confidence measures for word verification in speech recognition
    Author-s: Benitez, MC; Rubio, A; Garcia, P; de la Torre, A
    Source: SPEECH COMMUNICATION 32 1-2 79 94 2000
  • A transcription-based approach to determine the difficulty of a speech recognition task
    Author-s: Garcia, P; Rubio, AJ; Diaz-Verdejo, J; Benitez, MC; Lopez-Soler, JM
    Source: IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING 7 3 339 342 1999
  • Monitoring very-long-period seismicity at Kilauea Volcano, Hawaii
    Author-s: Dawson, Phillip B.; Benitez, M. C.; Chouet, Bernard A.; Wilson, David; Okubo, Paul G.
    Source: GEOPHYSICAL RESEARCH LETTERS 37 -1 -1 2010
  • The classification of seismo-volcanic signals using Hidden Markov Models as applied to the Stromboli and Etna volcanoes
    Author-s: Ibanez, Jesus M.; Benitez, Carmen; Gutierrez, Ligdamis A.; Cortes, Guillermo; Garcia-Yeguas, Araceli; Alguacil, Gerardo
    Source: JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH 187 3-4 218 226 2009

Conferences in ISI CPCI-Science

  • COMBINING SPEAKER AND NOISE FEATURE NORMALIZATION TECHNIQUES FOR AUTOMATIC SPEECH RECOGNITION
    Author-s: Garcia, L.; Benitez, C.; Segura, J. C.; Umesh, S.
    Source: 2011 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING 5496 5499 IEEE International Conference on Acoustics, Speech MAY 22-27, 2011 Prague Congress Ctr, Prague Congress Ctr, Prague Congress Ctr 2011
  • EVALUATING ROBUSTNESS OF A HMM-BASED CLASSIFICATION SYSTEM OF VOLCANO-SEISMIC EVENTS AT COLIMA AND POPOCATEPETL VOLCANOES
    Author-s: Cortes, Guillermo; Arambula, Raul; Gutierrez, Ligdamis A.; Benitez, Carmen; Ibanez, Jesus; Lesage, Philippe; Alvarez, Isaac; Garcia, Luz
    Source: 2009 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-5 1263 1266 IEEE International Geoscience and Remote Sensing S JUL 12-17, 2009 Cape Town, Cape Town 2009
  • Volcano-seismic signal detection and classification processing using Hidden Markov Models. Application to San Cristobal volcano, Nicaragua.
    Author-s: Gutierrez, Ligdamis; Ibanez, Jesus; Cortes, Guillermo; Ramirez, Javier; Benitez, Carmen; Tenorio, Virginia; Alvarez, Isaac
    Source: 2009 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-5 2902 2905 IEEE International Geoscience and Remote Sensing S JUL 12-17, 2009 Cape Town, Cape Town 2009
  • IMPROVING FEATURE EXTRACTION IN THE AUTOMATIC CLASSIFICATION OF SEISMIC EVENTS. APPLICATION TO COLIMA AND ARENAL VOLCANOES
    Author-s: Alvarez, I.; Cortes, G.; de la Torre, A.; Benitez, C.; Garcia, L.; Lesage, P.; Arambula, R.; Gonzalez, M.
    Source: 2009 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-5 2906 2909 IEEE International Geoscience and Remote Sensing S JUL 12-17, 2009 Cape Town, Cape Town 2009
  • Parametric nonlinear feature equalization for robust speech recognition
    Author-s: Garcia, Luz; Segura, Jose C.; Ramirez, Javier; de la Torre, Angel; Benitez, Carmen
    Source: 2006 IEEE International Conference on Acoustics, Speech and Signal Processing, Vols 1-13 529 532 31st IEEE International Conference on Acoustics, S MAY 14-19, 2006 Toulouse, Toulouse 2006
  • Continuous HMM-based volcano monitoring at Deception Island, Antarctica
    Author-s: Benitez, C.; Ramirez, J.; Segura, J. C.; Rubio, A.; Ibanez, J. M.; Almendros, J.; Garcia-Yeguas, A.
    Source: 2006 IEEE International Conference on Acoustics, Speech and Signal Processing, Vols 1-13 5607 5610 31st IEEE International Conference on Acoustics, S MAY 14-19, 2006 Toulouse, Toulouse 2006
  • HMM-based classification of seismic events recorded at Stromboli and Etna Volcanoes
    Author-s: Gutierrez, L. A.; Ramirez, J.; Benitez, C.; Ibanez, J. M.; Almendros, J.; Garcia-Yeguas, A.
    Source: 2006 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-8 2765 2768 IEEE International Geoscience and Remote Sensing S JUL 31-AUG 04, 2006 Denver, Denver 2006
  • Voice activity detection with noise reduction and long-term spectral divergence estimation
    Author-s: Ramirez, J; Segura, JC; Benitez, C; de la Torre, A; Rubio, A
    Source: 2004 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOL II, PROCEEDINGS 1093 1096 IEEE International Conference on Acoustics, Speech MAY 17-21, 2004 Montreal, Montreal 2004
  • Non-linear transformations of the feature space for robust speech recognition
    Author-s: de la Torre, A; Segura, JC; Benitez, C; Peinado, AM; Rubio, AJ
    Source: 2002 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS I-IV, PROCEEDIN 401 404 IEEE International Conference on Acoustics, Speech MAY 13-17, 2002 ORLANDO, ORLANDO 2002
  • VTS residual noise compensation
    Author-s: Segura, JC; Benitez, MC; de la Torre, A; Dupont, S; Rubio, AJ
    Source: 2002 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS I-IV, PROCEEDIN 409 412 IEEE International Conference on Acoustics, Speech MAY 13-17, 2002 ORLANDO, ORLANDO 2002

Book chapters in ISI

  • Normalization of the inter-frame information using smoothing filtering
    Author-s: Garcia, L.; Segura, J. C.; Benitez, C.; Ramirez, J.; de la Torre, A.
    Source: INTERSPEECH 2006 AND 9TH INTERNATIONAL CONFERENCE ON SPOKEN LANGUAGE PROCESSING, VOLS 1-5 369 372 9th International Conference on Spoken Language Pr 2006 Pittsburgh, Pittsburgh 2006
  • HMM-Based Continuous Sign Language Recognition using a Fast Optical Flow Parameterization of Visual Information
    Author-s: Cortes, G.; Garcia, L.; Benitez, C.; Segura, J. C.
    Source: INTERSPEECH 2006 AND 9TH INTERNATIONAL CONFERENCE ON SPOKEN LANGUAGE PROCESSING, VOLS 1-5 1288 1291 9th International Conference on Spoken Language Pr 2006 Pittsburgh, Pittsburgh 2006
  • Noise robust model-based Voice Activity Detection
    Author-s: de la Torre, Angel; Ramirez, Javier; Benitez, Carmen; Segura, Jose C.; Garcia, Luz; Rubio, Antonio J.
    Source: INTERSPEECH 2006 AND 9TH INTERNATIONAL CONFERENCE ON SPOKEN LANGUAGE PROCESSING, VOLS 1-5 1954 1957 9th International Conference on Spoken Language Pr 2006 Pittsburgh, Pittsburgh 2006
  • A new voice activity detector using subband order-statistics filters for robust speech recognition
    Author-s: Ramirez, J; Segura, JC; Benitez, C; de la Torre, A; Rubio, A
    Source: 2004 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOL I, PROCEEDINGS 849 852 IEEE International Conference on Acoustics, Speech MAY 17-21, 2004 Montreal, Montreal 2004
  • USING MULTIPLE VECTOR QUANTIZATION AND SEMICONTINUOUS HIDDEN MARKOV MODELS FOR SPEECH RECOGNITION
    Author-s: PEINADO, AM; SEGURA, JC; RUBIO, AJ; BENITEZ, MC
    Source: ICASSP-94 - PROCEEDINGS, VOL 1 61 64 1994 IEEE International Conference on Acoustics, S APR 19-22, 1994 ADELAIDE, ADELAIDE 1994

National Projects

  • Algoritmos avanzados de procesamiento de señal para reconocimiento y caracterización de señales sismo volcánicas
    Principal Investigator: María del Carmen Benítez Ortúzar
    Reference: TEC2012-31551
    Start date: 2013-01-01
    End date: 2015-12-31
    Research Group: TIC-123
    Amount to UGR: 69030.00
    Funding Agency: Ministerio de Economía y Competitividad
    Program: Proyectos nacionales de investigación (MINECO)
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Doctoral Dissertations supervised

  • Algoritmos avanzados de procesamiento de señal basados en técnicas de Deep Learning para descripción y caracterización de señales sismo-volcánicas
    Author: Manuel Marcelino Titos Luzón
    Institution: Teoría de la Señal, Telemática y Comunicaciones (UGR),
    Dissertation date: 2018-10-29
    Supervision: María del Carmen Benítez Ortúzar, Luz García Martínez
  • Reconocimiento de señales sismo volcánicas mediante canales específicos basados en modelos ocultos de Markov
    Author: Guillermo Cortés Moreno
    Institution: Teoría de la Señal, Telemática y Comunicaciones (UGR),
    Dissertation date: 2015-12-18
    Supervision: María del Carmen Benítez Ortúzar, Jesús Miguel Ibáñez Godoy
  • Sistema de Detección y Clasificación de Señales Sísmico-Volcánicas utilizando Modelos Ocultos de Markov (HMMs): Aplicación a Volcales Activos de Nicaragua e Italia
    Author: Ligdamis Anaxis Gutiérrez Espinoza
    Institution: Física Teórica y del Cosmos (UGR), Teoría de la Señal, Telemática y Comunicaciones (UGR),
    Dissertation date: 2013-09-20
    Supervision: Jesús Miguel Ibáñez Godoy, María del Carmen Benítez Ortúzar

Research visits

  • USGS (UNITED STATED GEOLOGICAL SURVEY)
    Visiting researcher: Benítez Ortúzar, María del Carmen
    Research group: TIC-123
    Place: MENLO PARK (CALIFORNIA); ESTADOS UNIDOS DE AMERICA
    Start date: 2009-09-08
    End date: 2010-02-28
  • INTERNATIONAL COMPUTER SCIENCE INSTITUTE
    Visiting researcher: Benítez Ortúzar, María del Carmen
    Research group: TIC-123
    Place: BERKELEY; ESTADOS UNIDOS DE AMERICA
    Start date: 2000-08-01
    End date: 2001-07-31
    Visiting category: POSTD
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