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Tel: +30 2610 996496
+30 2610 996480
Fax: +30 2610 997336
+30 2610 991855
Email: raniadou [AT] upatras.gr
 
 
Electrical and Computer Enginnering Department
 
University of Patras
 

Mihalis Siafarikas

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Post-Doc Researcher
Artificial Intelligence Group
Wire Communications Laboratory
Electrical and Computer Engineering Dept.
University of Patras

Contact Details

Tel: 
+30 6983 510 335
Artificial Intelligence Group
Wire Communications Laboratory
Electrical and Computer Engineering Dept.
University of Patras

About

Introduction: 
Mihalis Siafarikas was born in Arta in 1970 and he is an Engineer in Electronics and Telecommunications graduated from the Air Force Engineering Department, Hellenic Air Force Academy, in 1992.
He received his MSc in Satellite Communications Engineering with distinction from the University of Surrey, U.K., in 1998.
In November 2002, he graduated as a mathematician from the Mathematics Department, University of Patras.
In 2004, he received his MSc in Applied Mathematics from the Mathematics Department, University of Patras.
In 2010, he received the Ph.D degree from the Department of Electrical and Computer Engineering, University of Patras.
Currently, he is a researcher at the Wire Communications Laboratory, University of Patras.

His research interests include Wavelets and their Applications (Automatic Speech and Speaker Recognition etc).

Qualifications: 
2010 : Ph.D. in Electrical and Computer Engineering, University of Patras, Greece.
2004 : MSc in Applied Mathematics, Mathematics Department, University of Patras, Greece.
2002 : Mathematics degree, Mathematics Department, University of Patras, Greece.
1998 : MSc in Satellite Communications Engineering, University of Surrey, UK.
1992 : Engineering degree in Electronics and Telecommunications, Air Force Engineering Department

Research

Research Interests: 
Wavelets
Speech Recognition
Speaker Recognition
Publications: 
Publications in Journals

§ Siafarikas M., Ganchev T., Fakotakis N., "Speaker Verification Reinforced by Objective Wavelet Packets-based Speech Parameterization", International Transaction on Speech Science and Engineering, ISSN 1738-4737, Vol. 1, No. 2, December 2004, pp. 60-71.
§ Siafarikas M., Ganchev T., Fakotakis N., Kokkinakis G., "Wavelet packet approximation of critical bands for speaker verification", International Journal of Speech Technology, Vol. 10, No. 4, 2007, pp. 197–218.
§ Mporas Ι., Ganchev Τ., Siafarikas Μ., Fakotakis Ν., "Comparison of Speech Features on the Speech Recognition Task", Journal of Computer Science, Vol. 3, No. 8, 2007, pp. 608-616.
§ Siafarikas Μ., Mporas Ι., Ganchev Τ., Fakotakis Ν., "Speech Recognition Using Wavelet Packet Features", Journal of Wavelet Theory and Applications, Vol. 2, No. 1, 2008, pp. 41-59.
 
 
Publications in Books

§ Ganchev T., Siafarikas M., Fakotakis N., "Speaker Verification Based on Wavelet Packets", An International Conference on Text Speech and Dialogue TSD 2004, Lecture Notes in Computer Science, Springer-Verlag, Heidelberg, ISSN: 0302-9743, vol. LNAI 3206/2004, Sept. 2004, pp. 299–306.
 
 
Publications in Conferences

§ Siafarikas M., Ganchev T., Fakotakis N., "Wavelet Packets Based Speaker Verification", The ISCA Speaker and Language Recognition Workshop – Odyssey’2004, Toledo, Spain, May 31- June 3, 2004, pp.257–264.
§ Siafarikas M., Ganchev T., Fakotakis N., "Objective Wavelet Packets Features for Speaker Verification", Proc. of ICSLP 2004, Jeju Island, Korea, 2004, pp. 2365-2368.
§ SiafarikasM., GanchevT., FakotakisN., KokkinakisG., "OverlappingWaveletPacketFeaturesforSpeakerVerification", Proc. oftheINTERSPEECH 2005, Lisbon, Portugal, 2005, pp. 3121–3124.
§ Ganchev T., Siafarikas M., Fakotakis N., "Evaluation of speech parameterization methods for speaker recognition", Proc. of the Acoustics-2006, Sept 18-19, 2006, pp. 105-110.
§ Siafarikas M., Ganchev T., Fakotakis N., "Wavelet Packet Bases for Speaker Recognition", Proc. of the ICTAI-2007, October 29-31, 2007, Patras, Greece, pp. 514-517.
§ Mporas Ι., Ganchev Τ., Siafarikas Μ., Kostoulas Τ., "Comparative Evaluation of Speech Parameterizations for Speech Recognition", IEEE ICTAI 2007, Patras, Greece, 29-31 October, 2007, pp. 510-513.
§ Ganchev T., Kocsis O., Lyras D., Katsaounos N., Mporas I., Lazaridis A., Kostoulas T., Ntalampiras S., Siafarikas M., Papadopoulos G., Sgarbas K., Fakotakis N. (2008), "Natural Spoken Dialogue Interaction: Technology, Tools, Resources and Applications", Proc. of the System Demonstrations of the 18th European Conference on Artificial Intelligence, July 23-25, 2008, Patras, Greece.
 
 
Citations

 Siafarikas M., Ganchev T., Fakotakis N., "Wavelet Packets Based Speaker Verification", The ISCA Speaker and Language Recognition Workshop – Odyssey’2004, Toledo, Spain, May 31- June 3, 2004, pp.257–264.
Cited in:
1.       E. Avci, Z.H. Akpolat (2005). “Speech recognition using a wavelet packet adaptive network based fuzzy inference system”, Expert Systems with Applications, Vol.31, Issue 3, October 2006, pp. 495– 503.
2.       B. Salna, J. Kamarauskas. (2005), “Problems and Prospects of Forensic Automatic Speaker Recognition by Voice”, Jurisprudencija, ISSN 1392-6195, Vol. 66(58), Mykolo Romerio Universitetas, Vinius, 2005.
3.       Håkan Melin (2006). “Automatic speaker verification on site and by telephone: methods, applications and assessment”, Doctoral thesis, KTH Computer Science and Communication, Stockholm, Sweden, 2006. Available:http://www.speech.kth.se/~melin/publications.html
4.       E. Avci, “A new optimum feature extraction and classification method for speaker recognition: GWPNN”, Expert Systems with Applications, Vol.32, Issue 2, February 2007, pp. 485-498. Available: (http://www.sciencedirect.com/science/article/B6V03-4J2KXCM-2/2/55b78624fe0a5a1be124ca8f07c2ce5d)
5.       Fernαndez, R., Montalvo, A., Calvo, J.R., Hernαndez, G. (2008). “Selection of the Best Wavelet Packet Nodes Based on Mutual Information for Speaker Identification”, in Proceedings of the 13th Iberoamerican Congress on Pattern Recognition, CIARP 2008, Havana, 9-12 Sept. 2008, LNCS vol.5197, 2008, pp.78-85.
6.       Mohamed El-wakdy, Ehab El-sehely, Mostafa El-tokhy, Adel El-hennawy. (2008). “Speech Recognition Using a Wavelet Transform to Establish Fuzzy Inference System through Subtractive Clustering and Neural Network (ANFIS)”, 12th WSEAS International Conference on SYSTEMS, Heraklion, Greece, July 22-24, 2008, pp.381-386.
7.       A. M. Elwakdy, B. E. Elsehely, C. M. Eltokhy, And D. A. Elhennawy. (2008). “Speech Recognition Using A Wavelet Transform To Establish Fuzzy Inference System Through Subtractive Clustering and Neural Network (ANFIS)”, International Journal of Circuits, Systems and Signal Processing, no. 4, Vol.2, 2008, pp.264-273.
8.       J. Kamarauskas (2009), “Speaker Recognition by Voice”, PhD Thesis, ISBN 978-9955-28-422-2, VILNIUS GEDIMINAS TECHNICAL UNIVERSITY, Vilnius, 2009.
9.       M. Chetouani (2004), “Codage neuro-prédictif pour l’extraction de caractéristiques de signaux de parole”, PhD Thesis, Université Pierre & Marie Curie, France, 2004.
10.    P.S. Periasamy, K. Duraiswamy and P. Anitha (2009), "Wiener filter based Image Denoising using Wavelet Packet Transform, Advances in Computational Sciences and Technology, Vol. 2, No. 2, 2009, pp.243–254.
11.    Calvo J.R., Fernαndez R., Hernαndez G. (2008), "Metodos de extraccion, seleccion y clasificacion de rasgos acusticos para el reconocimiento del locator", Reporte Tecnico, Reconocimiento de Patrones, RNPS No. 2142, ISSN 2072-6287, Serie Azul, 2008.
 
 
Ganchev T., Siafarikas M., Fakotakis N., "Speaker Verification Based on Wavelet Packets", An International Conference on Text Speech and Dialogue TSD 2004, Lecture Notes in Computer Science, Springer-Verlag, Heidelberg, ISSN: 0302-9743, vol. LNAI 3206/2004, Sept. 2004, pp. 299–306.
Cited in:
1.       Yu-Gang Jiang, Ping Guo, (2005), “Stellar Spectral Feature Extraction and Combination Analysis for Classification with ENN”, Proceedings of the Fourth International Conference on Machine Learning and Cybernetics, Guangzhou, 18-21 August 2005. ISBN: 0-7803-9091-1. Vol.6, pp. 3321– 3326
2.       H. Tasmaz, E. Ercelebi, “Speech enhancement based on undecimated wavelet packet-perceptual filterbanks and MMSE-STSA estimation in various noise environments”, Digital Signal Processing, In Press, Available online 12 October 2007: (http://www.sciencedirect.com/science/article/B6WDJ-4PWF0MK-1/2/a040233be6975af634af9bf1f1880ddb)
3.       Adami A. M., Adami A. G., “Using a Wavelet Representation for Classification of Movement in Bed”, XXX Congresso Nacional de Matemática Aplicada e Computacional - CNMAC, Florianópolis, 2007.
4.       Nguyen, Q.T., Phung, T.N., “The perceptual wavelet feature for noise robust Vietnamese speech recognition”, HUT-ICCE 2008 - 2nd International Conference on Communications and Electronics 2008, Article number 4578968, Pages 258-261.
5.       Galka Jacub (2008), "Optymalizacja parametryzcji sygnalu w aspekcie rozpoznawania mowy polskiej", PhD thesis, Wydzial Elektrotechniki, Automatyki, Informatyki I Elektroniki, Akademia Gorniczo-Hutnicza im. Stanislawa Staszica w Krakowie, Poland.
6.       P.S. Periasamy, K. Duraiswamy and P. Anitha (2009), "Wiener filter based Image Denoising using Wavelet Packet Transform, Advances in Computational Sciences and Technology, Vol. 2, No. 2, 2009, pp.243–254, © Research India Publications.
7.       J. Gałka, M. Ziółko, (2009). “Wavelet Parameterization For Speech Recognition”, In Proceedings of an ISCA Tutorial And Research Workshop On Non-Linear Speech Processing NOLISP 2009, Vic, 2009.
8.       Gałka, J., Ziółko, M., (2009). “Mean best basis algorithm for wavelet speech parameterization”, Proc. of the 5th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2009, art. no. 5337539, pp. 1110-1113. 
 
 
Siafarikas M., Ganchev T., Fakotakis N., "Objective Wavelet Packets Features for Speaker Verification", Proc. of ICSLP 2004, Jeju Island, Korea, 2004, pp. 2365-2368. 
Cited in:
1.       Hesham, M., (2006). “A predefined wavelet packet for speech quality assessment”, Journal of Engineering and Applied Science, Volume 53, Issue 5, October 2006, pp.637-652 
2.       S. Nasir, I. Khokar, and U. Akram, “Optimum Filter Overlapping Scheme for Deriving Speaker Dependent Mel Frequency Cepstral Coefficients”, In Proceeding of the Signal and Image Processing, 2008.
3.       Fu Bo-zhi, Zhang Hong-bin (2008), “Feature Extraction Using Wavelet Packet Decomposition Based on MPEG-I”, In Proceedings of the International Conference on Computer Science and Software Engineering, CSSE 2008, vol. 1, 2008, Article number 4721932, pp.1048-1052.
4.       Fu Bo-zhi, Zhang Hong-bin, (2008), “Feature Extraction Using Wavelet Packet Decomposition Based on MPEG-I”, In Proceedings of the International Conference on Signal Processing Proceedings, ICSP2008, art. no. 4697593, pp. 2233-2237.
5.       Jorge Luis Guevara Diaz, Juan Orlando Salazar Campos (2007). Extracción de Características en el Procesamiento Digital de una Señal para el Mejoramiento del Reconocimiento Automático de Habla usando Wavelets”, Diploma thesis. Universidad Nacional de Trujillo, Departamento de Ciencias F´isicas y Matem´aticas Escuela de Inform´atica, Trujillo, Per´u, 2007.
6.       Jorge Luis Guevara Diaz, Juan Orlando Salazar Campos (2007). “Extracción de Características en el Procesamiento Digital de una Señal para el Mejoramiento del Reconocimiento Automático de Habla usando Wavelets”, VI Jornadas Peruanas de Computaciуn, Trujillo, Peru, Nov. 6-11, 2007.
7.       Almashrgy M.A. (2005). “Speaker identification using wavelet packet transform and feed-forward neural networks”, MSc. Thesis, University Putra Malaysia, Malaysia. March 2005.
8.      Fan H.-T, Tu W.-H., Hung J.-W. (2006), “A Study of Sub-band Feature Statistics Compensation Techniques Based on a Discrete Wavelet Transform for Robust Speech Recognition”, Proceedings of the 21st Conference on Computational Linguistics and Speech Processing, pp.251-262, Sydney, 2006.
 

Siafarikas M., Ganchev T., Fakotakis N., Kokkinakis G., "Overlapping Wavelet Packet Features for Speaker Verification", Proc. of the INTERSPEECH 2005, Lisbon, Portugal, 2005, pp. 3121–3124.

Cited in:
1.       Pham T.V., “Wavelet Analysis for Robust Speech Processing and Applications”, PhD Dissertation, Graz University of Technology, Austria, February 2007.
2.       Matthieu Hébert (2008). Text-Dependent Speaker Recognition, chapter in Springer Handbook of Speech Processing (Jacob Benesty, M. Mohan Sondhi and Yiteng (Arden) Huang, Eds.), 10.1007/978-3-540-49127-9_37, pp. 743 – 762, 2008. http://www.springerlink.com/content/t543727222554h80
3.      Daniel Hernández López (2008), "Mejoras en el Modelado Acústico Para Reconocimiento de Locutor Dependiente de Texto", Master thesis, Escuela Politecnica Superior, Universidad Autonoma De Madrid, Septiembre 2008.
4.      Calvo J.R., Fernαndez R., Hernαndez G. (2008), "Metodos de extraccion, seleccion y clasificacion de rasgos acusticos para el reconocimiento del locator", Reporte Tecnico, Reconocimiento de Patrones, RNPS No. 2142, ISSN 2072-6287, Serie Azul, 2008.
5.      Alfonso I.R., Calvo de Lara J.R. (2009), "Reconocimiento del locutor dependiente del texto con modelos acústicos del habla", Reporte Tecnico, Reconocimiento de Patrones, RNPS No. 2142, ISSN 2072-6287, Serie Azul, 2009.
6.      Gunawan Sugiarta Y.B., Riyanto Bambang, Hendrawan, Suhardi (2010), "Feature Level Fusion of Speech and Face Image Based Person Identification System," Proc. of the 2010 Second International Conference on Computer Engineering and Applications, vol. 2, pp.221-225.
 
 
 I. Mporas, T. Ganchev, M. Siafarikas, N. Fakotakis, “Comparison of speech features on the speech recognition task”, Journal of Computer Science, vol. 3, no. 8. pp. 608-616, 2007.
Cited in:
1.       Γεώργιος Αλμπανίδης (2008), Πολυμεσική Επεξεργασία Ομιλίας, PhD thesis, Σχολή Θετικών Επιστημών, Τμήμα Πληροφορικής, Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης, Θεσσαλονίκη, 2008.
2.      U. Shrawankar, V. Thakare (2010), "Feature Extraction for a Speech Recognition System in Noisy Environment: a Study", Proc. of the 2010 Second International Conference on Computer Engineering and Applications, pp.358-361.
 
 
Siafarikas Μ., Mporas Ι., Ganchev Τ., Fakotakis Ν., "Speech Recognition Using Wavelet Packet Features", Journal of Wavelet Theory and Applications, Vol. 2, No. 1, 2008, pp. 41-59

Cited in:

1.        Z. Gosiewski, M.  Tarasiuk (2009), “Preliminary study of the automatic speech recognition for devices supporting the ill and disabled”, Journal of Vibroengineering, vol. 11, no. 3, September 2009, pp. 497-505.

2.       I.S. Peretta, G.F.M. Lima, J.A. Tavares, K. Yamanaka (2009), “Reconhecimento de Comando de Voz Baseado em Filtros Wavelet Utilizando Redes Neurais Artificiais", Anais do IX Congresso Brasileiro de Redes Neurais / Inteligência Computacional (IX CBRN), 2009.

3.      Soroka A.M., Trus A.A. (2009), “Algorithm for feature vector construction based on wavelet transform for classification of the Russian language phonemes”, Proc. of the 52nd Scientific Conference MFTI “Contemporary problems of the fundamental and applied science”, Part VII, “Control and applied mathematics”, FUPM-2, Vol. 2, 2009,

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