Publications:

J-P. Thiran, Ph. van Bastelaer, C.J. Wellekens, "Description of a Filter Synthesis and Analysis Program with a Special Study of the Numerical Accuracy", Revue MBLE, 13, 2, pp. 39-58, Aug. 1970.

C.J. Wellekens, " Generalization of Vlach's Method for the Numerical Inversion of the Laplace Transform", Electronics Letters, 6, 23, pp. 742-744, Nov. 1970.

V. Belevitch, C.J. Wellekens, "Internal Equalization in Filters", International Journal Circuit Theory & Applications 1, 2, 179-186; June 1973.

C.J. Wellekens, "Simultaneous Approximation of the Attenuation and Group Delay of Reciprocal Lossless Networks", Proceedings of  IEEE Symposium on Circuits & Systems ISCAS-1974, San Francisco; 274-277.

C.J. Wellekens, "La conception des filtres approximant simultanément des exigences d'affaiblissement et de phase", These no. 189, Ecole Polytechnique Féderale, Lausanne, 1974.

C.J. Wellekens, "Simultaneous Flat Approximations of the Ideal Low-Pass Filter", Proceedings of  Florence Conference Digital Signal Processing,Sept. 1975; 43-50.

C.J. Wellekens, "Filtres d'amplitude et de phase specifiees", L'Onde Electrique, 57, 1, (1977), 59-63.

C.J. Wellekens, A.N. Godard, "Simultaneous Flat Approximations of the Ideal Low-Pass Attenuation and Delay for Recursive Digital, Distributed, and Lumped Filters", IEEE Trans. on Circuits & Systems CAS-24, 5, 221-230, May 1977.

C.J. Wellekens, "Vibrations of Backed Piezoceramic Disk-Transducers with Annular Electrodes and Matching Layers", IEEE Trans. on Sonics & Ultrasonics SU-29, 1, 26-42, Jan. 1982.

C.J. Wellekens, "Equivalence of Two Designs of Bilinear Switched Capacitor Ladder Filters", Electronics Letters 18, 6, 246-247, March 1982.

Y. Kamp, C.J. Wellekens, "Optimal Design of Minimum Phase FIR Filters", Proceedings of  IEEE Conference on Acoustics, Speech & Signal Processing ICASSP-82 Paris, vol. 3, 1817-1820.

C.J. Wellekens, "Utilisation de la quantification vectorielle en reconnaissance de la parole". Revue HF, 12, 8 (1983), 265-268.

Y. Kamp, C.J. Wellekens, "Optimal Design of Minimum Phase FIR-Filters", IEEE Trans. on Acoustics, Speech & Signal Processing ASSP-31, 4, Aug. 1983, 922-926.

H. Bourlard, H. Ney, C.J. Wellekens, "Connected Digit Recognition Using Vector Quantization", Proceedings of  IEEE Conference on Acoustics, Speech & Signal Processing ICASSP-84, San Diego, USA, March 1984, pp. 26.10.1-4.

H. Bourlard, Y. Kamp, C.J. Wellekens, "Modèles statistiques de mots et de phonèmes pour la reconnaissance de phrases", Actes du séminairesur La Quantification vectorielle pour le traitement de la parole, Ed. L. Miclet, ENST, Paris, February 1985, pp. 203-207.

H. Bourlard, Y. Kamp, C. Wellekens, "Speaker Dependent Connected Speech Recognition via Phonemic Markov Models", Proceedings of  IEEE Conference on Acoustics, Speech & Signal Processing ICASSP-85 Tampa, March 1985, pp. 1213-1216.

H. Bourlard, Y. Kamp, H. Ney, C.J. Wellekens, "Speaker dependent connected speech recognition via dynamic programming and statistical methods", invited chapter in Speech and Speaker Recognition, ed. M.R.Schroeder,  Karger, Basel, 1985.

C.J. Wellekens, D. Snyers, "Décodage acoustique et analyse linguistique en reconnaissance de la parole", Compte-rendu Journée d'Etude "Synthèese et reconnaissance de la parole", Ed. IBRA, Liége,29 octobre 1985.

C.J. Wellekens, D. Snyers, "Décodage acoustique et analyse linguistique en reconnaissance de la parole", Revue HF, vol. XIII, n0 5, pp. 149-161,1985.

C.J. Wellekens, "Global Connected Digit Recognition Using Baum Welch Algorithm", Proceedings of  IEEE Conference on Acoustics, Speech & Signal Processing ICASSP-86, Tokyo, pp. 1081-1084.

H. Bourlard, C.J. Wellekens, "Connected Speech Recognition by Statistical Methods", EURASIP Short Course. Feb. 1986, Brussels.

H. Bourlard, C.J. Wellekens, "Discriminant Functions for Connected Speech Recognition", Signal Processing III: Theories and Appl., (I.T. Young et al. eds), Elsevier Sc. Publ. (North-Holland), EUSIPCO 1986, 507-510.

H. Bourlard, C.J. Wellekens, "Connected Speech Recognition by Phonemic Semi-Markov Chains for State Occupancy Modelling", Signal Processing III: Theories and Appl., (I.T. Young et al. eds), Elsevier Sc. Publ. (North-Holland), EUSIPCO 1986, 511-514.

C.J. Wellekens, "Explicit Time Correlation in Hidden Markov Models for Speech Recognition", Proc. IEEE Conference on Acoustics, Speech & Signal Processing ICASSP-87, vol. 1, pp. 384-386, Dallas, April 1987.

H. Bourlard, C.J. Wellekens,"Multilayer Perceptrons and Automatic Speech Recognition", IEEE First Int. Conf. on Neural Networks,San Diego, Calif. June 21-24,1987; IV-407-IV-416.

H. Bourlard, C.J. Wellekens, "Speech Pattern Discrimination and Multilayer Perceptrons", Computer, Speech and Language, vol.3, pp.1-19, 1989.

X. Aubert, H. Bourlard, Y. Kamp, C.J. Wellekens, "Improved Hidden Markov Models for Speech Recognition", Philips Journal of Research,vol.43, nos 3/4, pp.224-245, 1988.

H. Bourlard, C.J. Wellekens, "Links between Markov Models and  Multilayer Perceptrons", IEEE conference on Neural Information Processing Systems, 1988, Denver, CO,  Ed. D. Touretzky, Morgan-Kaufmann Publishers, pp.502-510, 1989.

C.J. Wellekens, "Speech Recognition Using Connectionist Methods", Invited paper. Proc. Connectionism in Perspective - Zurich, Eds R.Pfeifer, Z. Schreter, F.Fogelman-Souli\'e, L.Steels, North-Holland, 1989.

H. Bourlard, C.J. Wellekens, "Les applications des modèles connexionistes en reconnaissance de la parole", Invited paper. Comptes Rendus des Journées Francophones d'Informatique, Nancy, January 1989, pp. 181-192, Editions EC2, Nanterre, France.

H. Bourlard, C.J. Wellekens, "Speech Dynamics and Recurrent Neural Networks", IEEE Conference on Acoustics, Speech & Signal Processing ICASSP-89, vol.1, pp.33-36, Glasgow (UK).

H. Bourlard, C.J. Wellekens, "Neural Network Models and Applications to Speech Processing", (Part I), Revue HF, vol.XIV, no 2, pp.37-54.

H. Bourlard, C.J. Wellekens, "Neural Network Models and Applications to Speech Processing", (Part II), Revue HF, vol. XIV, 3-4, pp.69-80.

H. Bourlard, N. Morgan, C.J. Wellekens, "Statistical Inference in Multilayer Perceptrons and Hidden Markov Models with Applications in Continuous Speech Recognition",  Proceedings of the NATO Advanced Research Workshop onNeurocomputing: Algorithms, Architecture and Applications, Ed. F.Fogelman, Les Arcs (France), February 1989, Springer.

C.J. Wellekens, "Utilisation combinée des modèles de Markov et des perceptrons multicouches en reconnaissance de la parole",  Actes des Journées d'Electronique de Lausanne - 1989, Presses Polytechniques Romandes.

L. Almeida, C.J. Wellekens, "Neural Networks", Editors, Eurasip Workshop 1990, Sesimbra, Portugal

H. Bourlard, C.J. Wellekens," Links between Markov Models and Multilayer Perceptrons", IEEE Trans. PAMI-12, no 12, pp.1167-1178, December 1990.

C.J.Wellekens, "Mixture Density Estimators in Viterbi Training", IEEE Conference on Acoustics, Speech and Signal Processing, ICASSP-92,vol.1 pp361-364 March 1992.

C.J.Wellekens, "Improved Hidden Markov Models for Speech Recognition through Neural Network Learning in From Statistics to Neural Networks", Ed. V.Cherkassky, NATO ASI Series, Springer, 1993

Ph. Gelin, C.J.Wellekens, "Keyword Spotting for Video Soundtrack Indexing", IEEE Conf. Acoustics, Speech and Signal Processing, ICASSP-1996 , Atlanta (USA)

Ph.Gelin, C.J.Wellekens, "Keyword Spotting Enhancement for Video Soundtrack Indexing", ICSLP 96, Philadelphia, October 96.

C.J. Wellekens et al., "Handbook of Neural Computation", Co-editor, Oxford University Press, 1996

Ph. Gelin, C.J.Wellekens, "REMAP for video soundtrack indexing", ICASSP 97, Munchen, 1997

Ph.Gelin, C.J.Wellekens, "Keyword Spotting for Multimedia Document Indexing", SPIE 97, Dallas, Nov 97.

C.J.Wellekens,"Introduction to Speech Recognition Using Neural Networks", Proceedings of  ESANN-1998, pp.227-236, Bruges

C.J. Wellekens, "Enhanced ASR scores by acoustic feature filtering", Proceedings of ICSLP 1998, Sydney

C.J Wellekens, J. Kangasharju, C. Milesi, "The Use of Meta-HMM in Multistream HMM Training for Automatic Speech Recognition", Proceedings of ICSLP 1998, Sydney

C.J.Wellekens, "Multimedia Services", Proceedings of the Korea-France Workshop on Multimedia, Seoul (South Korea), July 1998

P. Delacourt, D. Kryze, C. Wellekens, "Speaker-based Segmentation for Audio Data Indexing", ESCA ETRW Workshop, Cambridge, UK, April, 1999.

P. Delacourt, C. Wellekens, "Audio data indexing: use of second-order statistics for speaker-based segmentation", IEEE International Conference on Multimedia Computing and Systems (ICMCS’99), Florence, Italy, June, 1999.

P. Delacourt, C. Wellekens, "Segmentation en locuteurs d’un document audio", CORESA’99, Sophia-Antipolis, France, June, 1999.

P. Delacourt, D. Kryze, C. Wellekens, "Detection of speaker changes in an audio document", 6th European Conference on Speech Communication and Technology, EUROSPEECH'99, Budapest, Hungary, September 5-10, 1999.

P. Delacourt, C. Wellekens, "A first step into speaker-based indexing", 1st European Workshop on Content-based Multimedia Indexing (CBMI'99), Toulouse, France, October 25-27, 1999.

P. Nguyen, R. Kuhn, J-C. Junqua, N. Niedzielski, C. Wellekens, "Une représentation compacte de locuteurs dans l’espace des modèles", CORESA’99, Sophia-Antipolis, France, June, 1999.

P. Nguyen, C. Wellekens, J-C Junqua, "Maximum Likelihood Eigenspace and MLLR for Speech Recognition in Noisy Environments", 6th European Conference on Speech Communication and Technology, EUROSPEECH'99, Budapest, Hungary, September 5-10, 1999.

C. Wellekens, "Amélioration des taux de reconnaissance par filtrage de données", CORESA’99, Sophia-Antipolis, France, June, 1999.

C. J. Wellekens, P. Castaing, "L'internationalisation par les Télécommunications et pour les Télécommunications", Journées des Techniques de l'Information et de la Communication, Nice, November, 1999.

Last Modified: Feb 2000