PEOPLE
Claudio Garretón
Ph.D. student
Research assistant and software developer

email cgarreto_at_ing.uchile.cl

Studies
Electrical Engineering Department, Universidad de Chile
  • Ph.D. Student in Electrical Engineering.
  • M.Sc. in Electrical Engineering, 2007
  • Electrical Engineer, 2007
  • B.Sc. in Electrical Engineering, 2005

Research Experience
  • 2004 - Present: Research Assistant, Speech Processing and Transmission Laboratory, Universidad de Chile, Santiago, Chile
  • 2009: International Fellow, Speech Technology and Research Laboratory, SRI International, Menlo Park, California
Awards
  • CONICYT scholarship for PhD Thesis finishing, Santiago, Chile, 2009.
  • CONICYT scholarship for PhD education in Electrical Engineering at Universidad de Chile, Santiago, Chile, 2007.
  • ISCA grant (International Speech Communication Association) to participate in INTERSPEECH 2006, Pittsburgh, PA, USA.
  • Honor's roll student, top 5 percent, at Electrical Engineering Department, Universidad de Chile, 2005.
  • “Universidad de Chile” scholarship for undergraduate education, 2000.
  • “Juan Gómez Millas” scholarship for undergraduate education, 2000.
Research Interests
  • Signal Processing
  • Speech technologies
  • Biometrics
  • Telecommunications
  • Software development
Publications
International Journals
  • Garretón C., Yoma N.B., and Torres M., Channel robust feature transformation based on filter-bank energy filtering, IEEE Transactions on Audio, Speech and Language Processing, Accepted October 2009.
  • Molina C., Yoma N.B., Huenupán F., Garretón C. and Wuth J., Maximum entropy based reinforcement learning using a confidence measure in speech recognition for telephone speech, IEEE Transactions on Audio, Speech and Language Processing, Accepted 20 August 2009.
  • Yoma N.B., Garretón C., Molina C. and Huenupán F., Unsupervised intra-speaker variability compensation based on Gestalt and model adaptation in speaker verification with telephone speech, Speech Communication, 50(11-12), pp. 953-964, 2008.
  • Huenupán F., Yoma N.B., Molina C., and Garretón C., Confidence based multiple classifier fusion in speaker verification, Pattern Recognition Letters, 29 (7), pp. 957-966, 2008.
Book Chapters
  • Yoma N.B., Molina C., Garretón C. and Huenupán F., Uncertainty in signal estimation and stochastic weighted Viterbi algorithm: A unified framework to address robustness in speech recognition and speaker verification, In: International Journal of Advanced Robotic Systems, Speech Recognition and Synthesis (Vedran Kordic, ed.), chapter 12, 2007.
International Conference Proceedings
  • Molina C., Yoma N.B., Huenupán F. and Garreton C., Unsupervised re-scoring of observation probability based on maximum entropy criterion by using confidence measure with telephone speech, International Conference on Spoken Language Processing, Brisbane, Australia, 2008.
  • Palma-Amestoy, R., Guerrero, P., Ruiz-del-Solar, J. and Garreton, C., Bayesian spatiotemporal context integration sources in robot vision systems, RoboCup Symposium, Suzhou, China, 2008.
  • Garreton C., Yoma N.B., Molina C. and Huenupan F., On comparing and combining intra-speaker variability compensation and unsupervised model adaptation in speaker verification, International Conference on Spoken Language Processing, Antwerp, Belgium, 2007.
  • Huenupan F., Yoma N.B., Molina C. and Garreton C., Speaker verification with multiple classifier fusion using Bayes based confidence measure, International Conference on Spoken Language Processing, Antwerp, Belgium, 2007.
  • Molina C., Yoma N.B., Huenupán F. and Garretón C., Unsupervised re-scoring of observation probability in Viterbi based on reinforcement learning by using confidence measure and HMM neighborhood, International Conference on Spoken Language Processing, Antwerp, Belgium, 2007.
  • Garretón C., Yoma N.B., Molina C. and Huenupán F., Intra-speaker variability compensation in speaker verification with limited enrolling data, International Conference on Spoken Language Processing, Pittsburgh, PA, USA, 2006.
Speech Processing and Transmission Laboratory