Prof. Tharmarajah Thiruvaran


Professor in Electrical and Electronic Engineering
Head, Department of Electrical and Electronic Engineering


B.Sc.Eng.(Hons)(Peradeniya), PhD (UNSW, Australia), AMIE(SL)
Member of the IEEE


Research interests : Automatic speaker recognition, Speech signal processing, Pattern recognition
.


  thiruvaran@eng.jfn.ac.lk
 +94-21-206-0160


Prof. T. Thiruvaran had received BScEng Degree with first class honours from University of Peradeniya in 2002 and PhD from University of New South Wales (UNSW) in 2010. Before joining University of Jaffna he has worked as Postdoctoral Fellow (Teaching) in University of New South Wales.
His PhD topic is Automatic speaker recognition using phase based features. His thesis involved the development of a frame averaged FM feature extraction technique based on two pole model of sub band signal of speech for automatic speaker recognition. He has worked as a researcher in IBM research projects of Speaker selection for background data in Forensic Voice Comparison Laboratory. He has worked in collaboration with I2R, Singapore as a team of I4U for the international evaluation of speaker recognition system by NIST. Then he has extended his research to power signal analysis, in particular, automatic detection of electric load using switching current transient signal by applying digital signal processing and pattern recognition techniques.
As awards he has obtained University Prize for Academic Excellence from University of Peradeniya in 2002 and Mahapola Higher Education (Merit) Scholarship for the meritorious performance in Advanced Level Examination.
He is a Member of the IEEE, Associate Member of the IESL and Member of Australasian Speech Science and Technology Association (ASSTA).


  • Automatic speaker recognition
  • Automatic electric load identification using signal processing techniques
  • Automatic forensic speaker recognition
  • Speech signal processing
  • Biomedical signal processing
  • Pattern recognition


International Journals
6 results
2018
[6]Identifying important attributes for early detection of Chronic Kidney Disease ( and ), In IEEE Reviews in Biomedical Engineering, volume 11, .
2015
[5]An investigation of supervector regression for forensic voice comparison on small data (, and ), In EURASIP Journal on Audio, Speech, and Music Processing, volume 7, .
[4]Spectral shifting of speaker-specific information for narrow band telephonic speaker recognition (, , and ), In IET Electronics Letters, volume 51, .
2009
[3]Computationally efficient frame-averaged FM feature extraction for speaker recognition (, , and ), In Electronics Letters, volume 45, .
2008
[2]Extraction of FM components from speech signals using all-pole model (, and ), In Electronics Letters, volume 44, . [doi]
2007
[1]Robust FM demodulation of discrete-time signals using least squares differential ratio (, and ), In Electronics Letters, volume 43, . [doi]
International Conference and Workshop Papers
33 results
[33]Normalization of Modulation Features for Speaker Recognition (, and ), In International Conference on Digital Signal Processing, Cardiff, UK.
[32]An Investigation of Sub-band FM Feature Extraction in Speaker Recognition (, , and ), In The IET Irish Signals and Systems Conference.
2019
[31]Analysis of Large Scale Distributed Generation on Radial Distribution System: Case Study in Sri Lanka (, , , , and ), In 2019 North American Power Symposium (NAPS), Wichita, Kansas, USA, .
2018
[30]Arduino based soil moisture analyzer as an effective way for irrigation scheduling (, and ), In 9th IEEE International Conference on Information and Automation for Sustainability (ICIAfS), Colombo, Sri Lanka, .
[29]Bearing Fault Prediction Using Current Signature Analysis in Electric Water Pump (, , , and ), In 9th IEEE International Conference on Information and Automation for Sustainability (ICIAfS), Colombo, Sri Lanka, .
[28]Low Cost Portable Wind Power Generation for Mobile Charging Applications (, , , and ), In 9th IEEE International Conference on Information and Automation for Sustainability, Colombo, .
2017
[27]Implementation of a Domestic Power Line Quality Measurement System (, , , , and ), In 11th IEEE International Conference on Industrial and Information Systems (ICIIS), Peradeniya, Sri Lanka, .
2016
[26]Investigation on Different Filters and Different Frequency Bands for Brain Computer Interface with Right Hand and Left Hand Imaginations ( and ), In JUICE Jaffna, Sri Lanka, .
[25]Local Detection of Distribution Level Faults in a Distributed Sensor Monitoring Network using HMM (, and ), In Electrical Engineering Conference at Colombo, Sri Lanka, .
2015
[24]Development of Electromagnetic Picking System for Weaving looms (, , , and ), In Annual conference session of the Institution of Engineers Sri Lanka (IESL), .
[23]A study of effectiveness of speech enhancement for cognitive load classification in noisy conditions (, , and ), In International Conference on Advanced Technologies for Communications (ATC), .
2013
[22]Enhancement of traditional mode of teaching based on the experience of project-based learning (, and ), In IEEE 8th International Conference on Industrial and Information Systems, . [doi]
[21]Automatic detection and identification of electric loads at the event of switching-on that load (, and ), In IEEE 8th International Conference on Industrial and Information Systems, . [doi]
[20]A comparison of single-stage and two-stage modelling approaches for automatic forensic speaker recognition (, , and ), In IEEE 8th International Conference on Industrial and Information Systems, . [doi]
[19]Automatic identification of electric loads using switching transient current signals (, and ), In IEEE Tencon - Spring, . [doi]
[18]A large-scale collaborative effort for noise-robust speaker verification (, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and ), In INTERSPEECH, .
[17]I4U submission to NIST SRE 2012: A large-scale collaborative effort for noise-robust speaker verification (, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and ), In INTERSPEECH, .
2012
[16]database selection for forensic voice comparison (, and ), In Speaker and Language Recognition Workshop, .
[15]A Non-Uniform Filterbank for Speaker Recognition (, and ), In INTERSPEECH, Portland, USA, .
2011
[14]Forensic voice comparison using Chinese /iau/ (, and ), In The17th International Congress of Phonetic Sciences, .
2010
[13]Investigation of Spectral Centroid Magnitude and Frequency for Speaker Recognition (, , , and ), In Odyssey: The Speaker and Language Recognition Workshop, .
[12]An issue in the calculation of logistic-regression calibration and fusion weights for forensic voice comparison (, and ), In Thirteenth Australasian International Conference on Speech Science and Technology, Melbourne, Australia, .
[11]Estimating the precision of the likelihood-ratio output of a forensic-voice-comparison system (, and ), In The Speaker and Language Recognition Workshop, Brno, .
2009
[10]The I4U system in NIST speaker recognition evaluation (, , , , , , , , , , , , , , , , , , , and ), In IEEE International Conference on Acoustics, Speech and Signal Processing, . [doi]
[9]Evaluation of a fused FM and cepstral-based speaker recognition system on the NIST 2008 SRE (, , , , and ), In IEEE International Conference on Acoustics, Speech and Signal Processing, . [doi]
[8]Analysis of band structures for speaker-specific information in FM feature extraction (, and ), In Interspeech, .
[7]An issue in the calculation of logistic-regression calibration and fusion weights for forensic voice comparison (, and ), In Interspeech, Brighton, U.K., .
2008
[6]FM Features for Automatic Forensic Speaker Recognition (, and ), In Proc. Interspeech, Australia, .
[5]Introducing a FM based Feature to Hierarchical Language Identification (, , and ), In Proc. Interspeech, Brisbane, Aust, .
[4]An Investigation of Sub-band FM Feature Extraction in Speaker Recognition (, , and ), In Proc. The IET Irish Signals and Systems Conf., Galway, Ireland, .
2007
[3]Group delay features for speaker recognition (, and ), In 6th International Conference on Information, Communications Signal Processing, . [doi]
[2]Normalization of Modulation Features for Speaker Recognition (, and ), In Proc. International Conference on Digital Signal Processing, Cardiff, UK, .
2006
[1]Speaker Identification using FM Features (, and ), In Eleventh Australasian International Conference on Speech Science and Technology, .