Dr.-Ing. Tamás Harczos

Tamás Harczos did his studies in information technology with minor Digital Signal Processing at the University of Veszprém in Hungary from 1998 to 2004 and finished with a diploma (master’s degree) in computer science.

During his diploma thesis, he was with the digital signal processing lab of the university. He wrote his thesis about a novel low bit-rate speech compression algorithm and its real-time implementation on Texas Instruments C6711 DSP.

After his graduation he worked as embedded programmer for the automotive industry before joining the Pázmány Péter Catholic University (PPCU) in Budapest for further studies at the end of 2004. In the Multidisciplinary Doctoral School of the Faculty of Information Technology of the PPCU he studied neurobiology, neurophysiology and cellular-neural-networks, and participated in teaching undergraduate students.

In 2006 he moved to Ilmenau, Germany, and joined the Medical Acoustics group (now Bio-inspired Technologies) of the Fraunhofer Institute for Digital Media Technology IDMT. Since 2007 he is also a PhD candidate at the Ilmenau University of Technology.

His current research interests focus on the use of auditory models in cochlear implants (CI), and the algorithmic aspects of CI speech processors and that of sound source localization with bilateral CI systems.

• T. Harczos, A. Chilian, and P. Husar, “Making use of auditory models for better mimicking of normal hearing processes with cochlear implants: the SAM coding strategy,” in IEEE Transactions on Biomedical Circuits and Systems, DOI: 10.1109/TBCAS.2012.2219530, 2013. (in press)

• T. Harczos, A. Chilian, and A. Katai, “Horizontal-plane localization with bilateral cochlear implants using the SAM strategy,” in Proc. 3rd Int. Symp. Audit. Audiol. Res. (ISAAR 2011): Speech perception and auditory disorders, Nyborg, Denmark: The Danavox Jubilee Foundation, pp. 339–345, 2012.
• T. Harczos, S. Fredelake, V. Hohmann, and B. Kollmeier, “Comparative evaluation of cochlear implant coding strategies via a model of the human auditory speech processing,” in Proc. 3rd Int. Symp. Audit. Audiol. Res. (ISAAR 2011): Speech perception and auditory disorders, Nyborg, Denmark: The Danavox Jubilee Foundation, pp. 331–338, 2012.
• A. Chilian, E. Braun, and T. Harczos, “Acoustic simulation of cochlear implant hearing,” in Proc. 3rd Int. Symp. Audit. Audiol. Res. (ISAAR 2011): Speech perception and auditory disorders, Nyborg, Denmark: The Danavox Jubilee Foundation, pp. 425–432, 2012.
  

• T. Harczos, S. Werner, G. Szepannek, and K. Brandenburg, “Evaluation of cues for horizontal-plane localization with bilateral cochlear implants,” in Proc. 2nd Int. Symp. Audit. Audiol. Res. (ISAAR 2009): Binaural Processing and Spatial Hearing, Helsingør, Denmark: The Danavox Jubilee Foundation, pp. 37–46, 2010.
• S. Werner, T. Harczos, and K. Brandenburg, “Overview of numerical models of cell types in the cochlea nucleus,” in Proc. 2nd Int. Symp. Audit. Audiol. Res. (ISAAR 2009): Binaural Processing and Spatial Hearing, Helsingør, Denmark: The Danavox Jubilee Foundation, pp. 61–70, 2010.
• G. Szepannek, M. Gruhne, B. Bischl, S. Krey, T. Harczos, F. Klefenz, C. Dittmar, and C. Weihs, “Perceptually Based Phoneme Recognition in Popular Music,” in Classification as a Tool for Research: Studies in Classification, Data Analysis, and Knowledge Organization, Heidelberg: Springer Berlin, pp. 751–758, 2010.
  

• G. Szepannek, T. Harczos, F. Klefenz, and C. Weihs, “Extending Features for Automatic Speech Recognition by Means of Auditory Modelling,” in Proc. 17th European Signal Proc. Conf. (EUSIPCO), Glasgow, UK, pp. 1235–1239, 2009.
• G. Szepannek, T. Harczos, F. Klefenz, and C. Weihs, “Combining Different Auditory Model Based Feature Extraction Principles for Feature Enrichment in Automatic Speech Recognition,” in Proc. 13th Int. Conf. "Speech and Computer" (SPECOM), St. Petersburg, Russia, pp. 205–210, 2009.
  

• T. Harczos, S. Werner, and G. Szepannek, “Formant map counterpart in auditory processing based on cochlear pressure wave trajectories,” in Proc. IEEE Biomed. Circuits and Systems Conf. (BioCAS), Baltimore, MD, USA, pp. 45–48, 2008.
• T. Harczos, A. Kátai, F. Klefenz, and I. Baljić, “Effects of improper spectral delay on speech recognition with cochlear implants: a simulation study,” in Proc. Int. Conf. Biocomp. Bioinf. Biomed. Techn. (BioTechno), Bucharest, Romania, pp. 47–52, 2008.
• T. Harczos, G. Szepannek, and F. Klefenz, “Towards automatic speech recognition based on cochlear traveling wave delay trajectories,” in Proc. 1st Int. Symp. Audit. Audiol. Res. (ISAAR 2007): Auditory Signal Processing in Hearing-Impaired Listeners, Helsingør, Denmark: The Danavox Jubilee Foundation, pp. 83–91, 2008.
  

• T. Harczos, W. Nogueira, G. Szepannek, and F. Klefenz, “Comparative evaluation of successive cochlear modeling stages as possible front-ends for automatic speech recognition,” in Proc. 19th Int. Congress on Acoustics (ICA), Madrid, Spain, 2007.
• G. Szepannek, T. Harczos, F. Klefenz, A. Katai, P. Schikowski, and C. Weihs, “Vowel Classification by a Neurophysiologically Parameterized Auditory Model,” in Advances in Data Analysis: Studies in Classification, Data Analysis, and Knowledge Organization, Heidelberg: Springer Berlin, pp. 653–660, 2007.
• W. Nogueira, T. Harczos, B. Edler, J. Ostermann, and A. Büchner, “Automatic Speech Recognition with a Cochlear Implant Front-End,” in Proc. 8th Ann. Conf. Speech Comm. Assoc. (Interspeech), Antwerp, Belgium, pp. 2537–2540, 2007.
• W. Nogueira, A. Kátai, T. Harczos, F. Klefenz, A. Büchner, and B. Edler, “An Auditory Model based Strategy for Cochlear Implants,” in Proc. 29th Ann. Int. Conf. IEEE Eng. in Medicine and Biol. Soc. (EMBC), Lyon, France, pp. 4127–4130, 2007.
  

• T. Harczos, G. Szepannek, A. Kátai, and F. Klefenz, “An auditory model based vowel classification,” in Proc. IEEE Biomed. Circuits and Systems Conf. (BioCAS), London, UK, pp. 69–72, 2006.
• T. Harczos, F. Klefenz, and A. Kátai, “A neurobiologically inspired vowel recognizer using Hough-transform,” in Proc. 1st Int. Conf. Comp. Vision Theory and Applications (VISAPP), Setubal, Portugal, vol. 1, pp. 251–256, 2006.
  

• T. Bárdi, G. Feldhoffer, T. Harczos, B. Srancsik, and G. D. Szabó, “Audiovizuális beszéd-adatbázis és alkalmazásai [Audio-visual speech database and its applications],” in Híradástechnika [Journal of the Scientific Association for Infocommunications, Hungary], vol. LX (October), pp. 24–28, 2005.

• T. Harczos, P. Attila, and D. Fodor, “TMS320C6711 DSP Based Implementation of a Novel Low Bit-rate Speech Compression Algorithm,” in Proc. Glob. Sig. Proc. Expo and Conf. (GSPx), Santa Clara, USA, 2004. (accepted)