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Dr. T. Nagarajan

Professor and Head of Department
Computer Science and Engineering

Educational Qualifications

  • 2004 Ph. D – Computer Science and Engineering, IIT Madras
  • 1992 M. E – Madurai Kamaraj University

Area of Research

  • Automatic Speech Recognition
  • Text-to-Speech Synthesis
  • Speech Signal Processing
  • Acoustic Modeling
  • Machine Learning
  • Music Signal Processing

Bio

Dr. T. Nagarajan earned his PhD degree from the Computer Science and Engineering department of IIT Madras in the year 2004. In his doctoral research, he was working on spoken language identification task. After his PhD, he joined TeNet group of IITM as a Senior-project-officer. During this period, he was working on a project, named, Multimodal Interface. Subsequently, he joined the National Institute of Scientific Research (INRS), Montreal, Canada, as a postdoctoral fellow and worked there for two years. During his postdoctoral research he was focusing on Continuous speech recognition task, in which he specifically focused on discriminative training techniques for better classification. After two years of postdoctoral research, he has joined SSN College of Engineering as a professor and he has been serving SSN since 2021 and he moved to Shiv Nadar University, Chennai.


Work Experience

  • 2021 – till date Professor and Head, Department of CSE, Shiv Nadar University, Chennai
  • 2009 – 2021 Professor and Head, Department of IT, SSN College of Engineering
  • 2006 – 2009 Professor, Department of IT, SSN College of Engineering
  • 2005 – 2006 Post-Doctoral Fellow, INRS, University of Quebec, Montreal, Canada
  • 2004 – 2005 Senior Project Officer, IC & SR, IIT Madras
  • 2000 – 2004 Teaching Assistant, Department of CSE, IIT Madras
  • 1995 – 2000 Assistant Professor and Head, PMC Tech, Thanjavur
  • 1992 – 1995 Senior Lecturer, PMC Tech, Thanjavu.

Publications

  • Rachel, G.A., Vijayalakshmi, P. & Nagarajan, T. Analysis of algorithms to estimate glottal closure instants from speech signals. International Journal of Speech Technology (Sept 2020). https://doi.org/10.1007/s10772-020-09752-5
  • M. P. A. Jeeva, T. Nagarajan and P. Vijayalakshmi, “Adaptive multi-band filter structure-based far-end speech enhancement,” in IET Signal Processing, vol. 14, no. 5, pp. 288-299, June 2020, doi: 10.1049/iet-spr.2019.0226.
  • Lavanya T, Nagarajan. T and Vijayalakshmi. P, Multi-Level Single-Channel Speech Enhancement Using a Unified Framework for Estimating Magnitude and Phase Spectra, IEEE/ACM Transactions on Audio, Speech, and Language Processing, 28, 1315-1327, 13 April 2020
  • T. A. M. Celin, T. Nagarajan and P. Vijayalakshmi, Data Augmentation Using Virtual Microphone Array Synthesis and Multi-Resolution Feature Extraction for Isolated Word Dysarthric Speech Recognition, IEEE Journal of Selected Topics in Signal Processing, 14, 2, 346-354, Feb 2020. doi: 10.1109/JSTSP.2020.2972161. (IF 6.68)
  • A. Mariya Celin, G. Anushiya Rachel, T. Nagarajan and P. Vijayalakshmi, “A Weighted Speaker-Specific Confusion Transducer Based Augmentative and Alternative Speech Communication Aid for Dysarthric Speakers”, IEEE Transactions on Neural Systems and Rehabilitation Engineering, Vol. 27, Issue 2, pp. 187-197, Feb 2019.

Awards

  • 2020 – Chief Minister’s Award for Tamil Computing for the year 2019, from the government of Tamil Nadu, for his contribution to Tamil for building a lightweight HMM-Based speech synthesizer and developing various applications.

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