Dr. T. Nagarajan

PROFESSOR & HEAD OF THE DEPARTMENTDr. T. Nagarajan Ph.D

Email: nagarajant@ssn.edu.in

Extn: 217

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 then. He has around 22 years of teaching and research experience both in India and abroad. Presently, he is a recognized supervisor of Anna University, Chennai, and supervising two part-time and two full-time Ph.D scholars in the area of speech signal processing, speech synthesis and speaker recognition.

Dr. T. Nagarajan’s areas of research include speech signal processing, continuous speech recognition, statistical parametric speech synthesis, speaker verification/identification, spoken language identification, segmentation of speech into subword units, discriminative training techniques, and improved acoustic modeling techniques. He has published about 60 research papers in his area of research both in international journals and conference proceedings.

Project details:

1. Title: Development of TEXT-to-SPEECH SYSTEM in Indian Languages: High- quality text-to-speech synthesis and small footprint TTS integrated with disability aids. (A consortium project with IIT Madras as Team Leader)
Funding Agency: Department of Electronics and Information Technology (DeitY),
Ministry of Communication & Information Technology (MCIT),
Government of India, New Delhi

Chief Investigator at SSNCE: Dr. T. Nagarajan
Co-Investigators at SSNCE: Dr. P. Vijayalakshmi and Dr. A. Shahina
Duration: 2012 – 2015
Amount: Rs.77 lakhs,

Status: Ongoing

2.Title: An assessment and intelligibility modification system for dysarthric speakers
Funding Agency: AICTE – RPS (A), New Delhi
Investigators: Dr. P. Vijayalakshmi and Dr. T. Nagarajan
Duration: 2010 – 2012
Amount: Rs. 9 lakhs
Status: Completed

3. Title: Design of lab model of speech processor for cochlear implants

Funding Agency: SSN Trust
Investigators: Dr. P. Vijayalakshmi, Dr. T. Nagarajan & Dr. A. Shahina
Duration: 2010 – 2012
Amount: 0.8 lakhs

Status: Completed

4. Title: Anatomical vibration sensor speech corpus for speech applications in noisy environments.
Funding Agency: SSN Trust
Investigators: Dr. A. Shahina, Dr. T. Nagarajan & Dr. P. Vijayalakshmi
Duration: 2010 – 2012
Amount: 1.23 lakhs

Status: Completed

Publications

Conference Publications:

  1. B. Ramani, M.P. Actlin Jeeva, P. Vijayalakshmi, T. Nagarajan, “Cross-Lingual Voice Conversion-Based Polyglot Speech Synthesizer for Indian Languages”, INTERSPEECH, Singapore, 2014, pp. 775 – 779.
  2. V. SherlinSolomi, M.S. Saranya, G. Anushiya Rachel, P. Vijayalakshmi, T. Nagarajan, “Performance Comparison of KLD and PoG Metrics for Finding the Acoustic Similarity Between Phonemes for the Development of a Polyglot Synthesizer”, IEEE TENCON, Bangkok, Thailand, 2014, pp. 1 – 4.
  3. G. Anushiya Rachel, S. Sreenidhi, P. Vijayalakshmi, T. Nagarajan, “Incorporation of Happiness into Neutral Speech by Modifying Emotive-Keywords”, IEEE TENCON 2014 Bangkok, Thailand, 2014, pp. 1 – 6.
  4. Jaison Thomas and T. Nagarajan, “Development and evaluation of HMM based Malayalam and English polyglot synthesizer” in the 3rd National conference on Advances in computing technology organized by the department of computer science and engineering, St. Joseph college of engineering, March 2014, pp. 1-3..
  5. K. Naveenkumar, T. Nagarajan, “Formant and Anti-Formant estimation from chirp group delay function” in Third National conference on Advances in computing technology (AICT14) held at St. Joseph college of engineering, Sriperumbudur, March 2014, pp. 1-5.
  6. Sivaram LP, T. Nagarajan, “Estimation of Phrase Boundaries for Tamil Speech Synthesizer” in 2014 IEEE International Conference on Innovations in Engineering and Technology (ICIET’14) organized by K.L.N College of Engineering, March 2014, pp. 1-5.
  7. Lilly Christina, P. Vijayalakshmi and T. Nagarajan, “Cross-lingual speaker adaptation in HMM-based speech synthesis” NCC 2014, IIT Kanpur, 2014, pp. 1 – 5.
  8. Anusha Prakash, M. Ramasubba Reddy, T. Nagarajan and Hema A Murthy “An Approach to Building Language-Independent Text-to-Speech Synthesis for Indian Languages”, NCC 2014, IIT Kanpur, 2014, pp. 1 – 5
  9. T. Ramya, S. Lilly Christina, P. Vijayalakshmi, T. Nagarajan, Analysis on MAP and MLLR-Based Speaker Adaptation Technique in Speech Recognition, in  Proc. of IEEE Int. Conf. on Circuit, Power and Computing Technologies (ICCPCT), 2014, pp. 1753 – 1758. (Best paper award).
  10. S. Sreenidhi, G. Anushiya Rachel, P. Vijayalakshmi, T. Nagarajan, LP and TD-PSOLA-Based Incorporation of Happiness in Neutral Speech Using Time-Domain Parameters, in  Proc. of IEEE Int. Conf. on Circuit, Power and Computing Technologies (ICCPCT), 2014, pp. 1158 – 1162.
  11. H. A. Patil, T. B. Patel, N. J. Shah, H. B. Sailor, R. Krishnan, G. R. Kasthuri, T. Nagarajan, S. L. Christina, N. Kumar, V. Raghavendra, S. P. Kishore, S. R. M. Prasanna, N. Adiga, S. R. Singh, K. Anand, P. Kumar, B. C. Singh, S. L. Binil Kumar, T. G. Bhadran, T. Sajini, A. Saha, T. Basu, K. S. Rao, N. P. Narendra, A. K. Sao, R. Kumar, P. Talukdar, P. Acharyaa, S. Chandra, S. Lata, H. A. Murthy, “A syllable-based framework for unit selection synthesis in 13 Indian languages”,  COCOSDA, Gurgaon, India, 2013, pp. 1 – 8.
  12. G. Anushiya Rachel, S. Lilly Christina, V. SherlinSolomi, B. Ramani, P. Vijayalakshmi, T. Nagarajan, “Development and Analysis of Various Phone-Sized Unit-Based Speech Synthesizers”, COCOSDA, Gurgaon, India, 2013, pp. 1 – 5.
  13. V. SherlinSolomi, S. Lilly Christina, G. Anushiya Rachel, B. Ramani, P. Vijayalakshmi, T. Nagarajan, “Analysis on Acoustic Similarities between Tamil and English Phonemes using Product of Likelihood-Gaussians for an HMM-Based Mixed-Language Synthesizer”, COCOSDA, Gurgaon, India, 2013, pp. 1 – 5.
  14. Ramani B, ActlinJeeva M P, Vijayalakshmi P, Nagarajan T, “Voice Conversion-based Multilingual to Polyglot Speech Synthesizer for Indian Languages”, IEEE TENCON, Xi’an, China, 2013, pp. 1 – 4.
  15. B. Bharathi and T. Nagarajan “GMM and i-vector based speaker verification using speaker-specific-text for short utterances”, IEEE TENCON, at Xi’an, China, 22-25, Oct. 2013.
  16. B. Ramani, S. Lilly Christina, G. Anushiya Rachel, V. SherlinSolomi, Mahesh Kumar Nandwana, Anusha Prakash, AswinShanmugam, Raghava Krishnan, S. Kishore Prahalad, K.Samudravijaya, P. Vijayalakshmi, T. Nagarajan and Hema Murthy, “A Common Attribute based Unified HTS Framework for Speech Synthesis in Indian Languages”, ISCA – SSW8, Barcelona, Spain , 2013, pp. 291 – 296.
  17. B. Ramani, V. SherlinSolomi, G. Anushiya Rachel, S. Lilly Christina, P. Vijayalakshmi,  T. Nagarajan, Hema A Murthy, “Development and Evaluation of Unit Selection and HMM-based Speech Synthesis for Tamil”, NCC, Delhi, India, 2013, pp. 1 – 5.
  18. B. Bharathi and T. Nagarajan, “A two-level approach for speaker recognition using speaker-specific-text”, in proceedings of NCC, at IIT Delhi, 15-17, Feb, 2013.
  19. M. Nanmalar, T. Nagarajan, “Multilingual Speech Recognition System for Indian Languages”, National Conference on Signal Processing, Communication Engineering (NCSCV 13), May 10-11, 2013, Anna University, Coimbatore.(Best paper award)
  20. B. Anusha, T. Nagarajan, “Prosody modeling for Tamil text-to-speech systems in FestVox framework”, National Conference on Signal Processing, Communication Engineering (NCSCV 13), May 10-11, 2013, Anna University, Coimbatore.
  21. M. S. Saranya, T. Nagarajan,” Bilingual Text To Speech Synthesis Using HTS, 4th April, 2013, National Trends in VLSI, Information and Communication, Dr. B. S. Abdur Rahman  University.
  22. K. Menaga, T. Nagarajan, “Development and Performance Analysis of Phoneme and CV-based Tamil Unit Selection Synthesis Systems”, 11th – 13th April, 2013, ICCCC’13, Christian College of Engineering and Technology, Oddanchatram.
  23. N. Sripriya, T. Nagarajan, “Pitch Estimation using Harmonic Product Spectrum derived from DCT”, IEEE Region 10 Conference-TENCON 2013, China, Oct 22-25, 2013, ISSN : 2159-3442, pp. 1 – 4, DOI : 10.1109/TENCON.2013.6718976.
  24. N. Sripriya, T. Nagarajan, “Estimation of instants of significant excitation using accumulated energy function of DCT” in the 16th international conference, Oriental COCOSDA/CASLRE 2013 organised by KIIT College of Engineering, Gurgaon, India, Nov 25-27, 2013, pp. 1 – 6, DOI: 10.1109/ICSDA.2013.6709845.
  25. M. Anbu Swarna Priyanka, V. SherlinSolomi, P. Vijayalakshmi, T. Nagarajan, “Multiresolution Feature Extraction (MRFE) based speech recognition system”, International Conference on Recent Trends in Information Technology (ICRTIT), Madras Institute of Technology campus of Anna University, Chennai, 25-27 July 2013, pp. 152-156.
  26. M. Anbu Swarna Priyanka, V. SherlinSolomi, P. Vijayalakshmi, T. Nagarajan, “Speech recognition system developed using Multiresolution Feature Extraction (MRFE) for sparse data” in Proc. of National Conf. on Signal Processing, Communication and VLSI Design (NCSCV’13), 2013, pp. 302 – 306.
  27. S. Magdalene Mahiba, S. Lilly Christina, P. Vijayalakshmi, T. Nagarajan, “Analysis of Cross-Gender Adaptation using MAP and MLLR in Speech Recognition System”, Third International Conference on Recent Trends in Information Technology (ICRTIT), Madras Institute of Technology campus of Anna University, Chennai, 25-27 July 2013, pp. 387-392.
  28. S. Magdalene Mahiba, S. Lilly Christina, P. Vijayalakshmi, T. Nagarajan, “Speaker Adaptation Using MLLR and MAP Techniques in Speech Recognition System”, in Proc. of National Conf. on Signal Processing, Communication and VLSI Design (NCSCV’13), 2013, pp. 350 – 353.
  29. S. Johanan Joy Singh, G. Anushiya Rachel, P. Vijayalakshmi, T. Nagarajan, “Incorporating Emotions into Neutral Speech by Modifying Glottal Closure Instants”, in Proc. of National Conf. on Signal Processing, Communication and VLSI Design (NCSCV’13), 2013, pp. 339 – 343.
  30. M. Saranya, P. Vijayalakshmi and T. Nagarajan, “Improving the Intelligibility of Dysarthric Speech by Modifying System Parameters, Retaining Speaker’s Identity”,  Proc. of the Second International Conference on Recent Trends in Information Technology, Apr. 19 – 21st ,  2012, pp. 60 – 65.
  31. S. Lilly Christina, P. Vijayalakshmi and T. Nagarajan, “HMM Based Speech Recognition System for the Dysarthric Speech Evaluation of Articulatory Subsystem”, Proc. of the Second International Conference on Recent Tends in Information Technology, Apr. 19 – 21st, 2012, pp. 54 – 59.
  32. Anushiya Rachel Gladston, P. Vijayalakshmi and T. Nagarajan, “Improving Speech Intelligibility in Cochlear Implants Using Vocoder-Centric Acoustic Models”, Proc. of the Second International Conference on Recent Trends in Information Technology, Apr. 19 – 21st, 2012, pp. 66 – 71.
  33. B. Bharathi, P. Vijayalakshmi, T. Nagarajan “Speaker identification using utterances correspond to speaker-specific-text” in proceedings of IEEE Technical symposium at IIT Khargpur, during Jan .14 – 16, 2011.
  34. Saranya A, Sripriya N, T. Nagarajan , “Design of a VOCODER using instants of significant excitation” International conference on Signal Processing, Communication, Computing and Network Technologies (ICSCCN-2011), July 21-22, 2011, IEEE Explore DOI :10.1109/ICSCCN.2011.6024649, pp.742-746.
  35. T. Monica and T. Nagarajan, “Segmentation of speech signal into phonemes using two-level GMM-tokenization”, IEEE-International Conference on Recent Trends in Information Technology, ICRTIT 2011, June 2011, MIT, Chennai, pp 843-847.
  36. Preethi M, Pavithra B, Shriranjani S, Vijayalakshmi P, and T. Nagarajan, “Cochlear Implant model using Mel-frequency cepstral coefficients”, Intl. conference on Implantable Auditory Prosthesis (CIAP) 2011, Jul 24-29, 2011, California.
  37. Preethi Mahadevan, T. Nagarajan, Pavithra B , S Shri Ranjani , Vijayalakshmi P “Design of a lab model of a Digital Speech Processor for cochlear implant”, TENCON 2011, Indonesia, pp. 307 – 311
  38. P. Vijayalakshmi, Anu Abraham, B. Bharathi and T. Nagarajan, “Reducing the complexity of a triphone-based speech recognition system based on degree of coarticulation”, IEEE Techsym 2011, Jan 14-16, 2011, pp. 175 – 179.
  39. S. Harish, P. Vijayalakshmi and T. Nagarajan, “Significance of segmentation in Phoneme-based Tamil speech recognition system”, IEEE – ICECT, Apr.8-10, 2011, pp. 221 – 225.
  40. Anu Abraham, P. Vijayalakshmi and T. Nagarajan, “Pole focused linear prediction based spectrogram for coarticulation analysis”, IEEE Techsym 2010, IIT  Kharagpur on 25th February, 2010. (Digital Object Identifier:  10.1109/TECHSYM.2010.5469215)
  41. C. Arun Kumar, B. Bharathi, and T. Nagarajan, “A Discriminative GMM Technique using Product of Likelihood Gaussians”, IEEE TENCON 2009, Singapore on 28th August 2009. (IEEE Explore -Digital Object Identifier:10.1109/TENCON.2009.5395959 )
  42. P. Vijayalakshmi, P. Mukesh Kumar, Ra. V. Jayanthan and T. Nagarajan, “Cochlear Implant Models Based on Critical Band Filters”, IEEE TENCON 2009, Singapore on 28th August 2009. (IEEE Explore -Digital Object Identifier:10.1109/TENCON.2009.5396145 )
  43. P. Vijayalakshmi, T. Nagarajan and Ra. V. Jayanthan, “Selective Pole Modification-Based Technique for the Analysis and Detection of Hypernasality”, IEEE TENCON 2009. Singapore on 28th August 2009. (IEEE Explore -Digital Object Identifier:10.1109/TENCON.2009.5396117 ).
  44. N. Sripriya, P. Vijayalakshmi, C. Arun Kumar and T. Nagarajan – “Estimation of instants of significant excitation from speech signal using temporal phase periodicity” – IEEE TENCON 2009, Nov. 23 – 26, Nov. 2009  pp. 1 – 4.
  45. T. Nagarajan, and P. Vijayalakshmi, “Discriminative optimization of HMM Topology using product of likelihood – Gaussians” Proceedings of the National Conference on Communications, 2008 conducted by IIT Mumbai.
  46. T. Nagarajan and Douglas O’Shaughnessy, “Bias estimation and correction in a classifier using product of likelihood-Gaussians”, ICASSP – 2007 Hawii, USA, pp.1061-1064
  47. T. Nagarajan and Douglas O’Shaughnessy, “Discriminative MLE training using a product of Gaussian likelihoods”, INTERSPEECH – 2006, Pittsburgh, USA, pp. 601-604.
  48. T. Nagarajan, P. Vijayalakshmi, and Douglas O’Shaughnessy, “Combining multiple-sized sub-word units in a speech recognition system using baseform selection”, INTERSPEECH – 2006, Pittsburgh, USA.
  49. Douglas O’Shaughnessy, T. Nagarajan, and Li Haozheng, “Better model and decoding methods for automatic speech recognition”, Acoustic Society of America - 151st Meeting, June 2006.
  50. Douglas O’Shaughnessy, Wayne Wang, Willian Zhu, Vincent Barreaud, T. Nagarajan and R. Muralishankar, “Improving automatic speech recognition via better analysis and adaptation”, Acoustic Society of America - 150th Meeting, Vol.118, No. 3, September 2005.
  51. T. Nagarajan and Douglas O’Shaughnessy, “Explicit segmentation of speech based on frequency-domain AR modeling”, INTERSPEECH – 2005, September 4-8, Lisbon, Portugal, pp 653-656.
  52. M. Nageshwara Rao, S. Thomas, T. Nagarajan and H. A. Murthy, “Text-to-speech synthesis using syllable-like units”, NCC-2005, IIT Kharagpur, India, Jan 2005, pp 277280.
  53. P. Sowjanya, K. Vijayalakshmi, G. Vijay Prakash, KasiRajan, M. S. Vidhya, T. Nagarajan, SrinivasChakravarthy, N. S. Narayanaswamy and Hema A. Murthy, “Hand Writing Interface enabled Tamil Search Engine”, In Proc. 11’th National Conference on Communications, pp 661-665, Jan 28-31, 2005, IIT Kharagpur.
  54. G. L. Sarada, T. Nagarajan, Hema A. Murthy, “Multiple Frame Size and Multiple Frame Rate Feature Extraction for Continuous Speech Recognition”, SPCOM-2004, December, Bangalore, pp 592-595.
  55. N. Hemalatha, G. L. Sarada, T. Nagarajan, Hema A. Murthy, “Connected Digit Recognition using Unsupervised and Incremental HMMs”, NCC-2005, IIT Kharagpur, India, Jan 2005, pp 296-299.
  56. G. L. Sarada, T. Nagarajan, and Hema A. Murthy, “Automatic Transcription of continuous speech Using Unsupervised and Incremental Training”, pp. 405-408, INTERSPEECH – 2004, October 6-11, South Korea.
  57. T. Nagarajan, Hema A. Murthy and N. Hemalatha, “Automatic segmentation and labeling of continuous speech without bootstrapping”, EUSIPCO-2004, pp. 561-564, Vienna, Austria, September 6-10, 2004.
  58. T. Nagarajan and Hema A. Murthy, “Language identification using parallel syllable-like unit recognition”, ICASSP-2004, Montreal, Canada, May 2004, Vol. I, pp.401-404.
  59. T. Nagarajan and Hema A. Murthy, “An approach to segmentation and labeling of continuous speech without bootstrapping”, Proc. NCC-2004, IISc, Bangalore, India, Jan. 2004, pp.508-512.
  60. T. Nagarajan, Hema A. Murthy, and, Rajesh M. Hegde, “Segmentation of speech into syllable-like units”, Proc. EUROSPEECH-03, Geneva, Switzerland, Sep. 2003, pp.28932896.
  61. T. Nagarajan and Hema A. Murthy, “Group delay based segmentation of spontaneous speech into syllable-like units”, ISCA and IEEE workshop on Spontaneous Speech Processing and Recognition, Tokyo, Japan, Apr. 2003, pp.115-118.
  62. T. Nagarajan and Hema A. Murthy, “A pair-wise multiple codebook approach to implicit language identification”, Workshop on Spoken Language Processing, TIFR, India, Jan. 2003, pp.101-108.
  63. T. Nagarajan and Hema A. Murthy, “Language identification using spectral vector distribution across languages”, Proc. International Conference on Natural Language Processing, Dec. 2002, pp.327-335.
  64. V. Kamakshi Prasad, T. Nagarajan and Hema A. Murthy, “Continuous speech recognition using automatically segmented data at syllabic units”, Proc. ICSP-2002, China, 2002, pp.235-238.
  65. T. Nagarajan, V. Kamakshi Prasad, and Hema A. Murthy, “The minimum phase signal derived from the magnitude spectrum and its applications to speech segmentation”, Sixth Biennial Conference on Signal Processing and Communications, Bangalore, India, July 15-18, 2001, pp.95-101.
  66. JyotsnaBalleda, Hema A. Murthy, and T. Nagarajan, “Language identification from short segment of speech”, Proc. ICSLP-2000, Vol.III, pp.1033-1036.

Journal publications:

  1. B. Bharathi, T. Nagarajan, “Speaker verification using speaker-specific-text”, in WSEAS Transactions on Signal Processing, E-ISSN: 2224-3488, Vol.10, July 2014, pp. 320-330, Impact factor: 0.914
  2. B. Bharathi, C. Arunkumar and  T. Nagarajan, “Improving the performance of speaker and language identification task using unique characteristics of a class”  International Journal of Speech Technology, Springer+Science Business Media, DOI 10.1007/s10772-012-9167-z, Volume 16, Issue 1 (2012), Page 115-124, Impact Factor: 0.528, Online ISSN 1572-8110 Print ISSN 1381-2416.
  3. P. Vijayalakshmi, T. Nagarajan and PreethiMahadevan – “Improving speech intelligibility in cochlear implants using acoustic models” – WSEAS Transactions on Signal Processing, Vol. 7, Issue 4, Oct. 2011,  pp. 103 – 116.
  4. P. Vijayalakshmi, T. Nagarajan and M. R. Reddy, “Assessment of articulatory and velopharyngeal sub-systems of dysarthric speech”, International Journal of BSCHS, special issue on Biosensors: Data acquisition, Processing and Control, June 2009, Vol. 14, No. 2, pp 87 -94.
  5. G. Lakshmi Sarada, A. Lakshmi, T. Nagarajan and Hema A. Murthy, “Automatic transcription of continuous speech into syllable-like units for Indian languages”, SADHANA vol.34, part2, April 2009, pp. 221-233.
  6. T. Nagarajan and Hema A. Murthy, “Language identification using acoustic log-likelihoods of syllable-like units”, Speech Communications, Elsevier publications, Vol.48, pp.913-926, 2006.
  7. Douglas O’Shaughnessy, Wayne Wang, Willian Zhu, Vincent Barreaud, T. Nagarajan and R. Muralishankar, “Toward better automatic speech recognition”, Canadian Acoustics Journal, Vol. 33, No. 3, pp.48-49, 2005.
  8. T. Nagarajan and Hema A. Murthy, “Sub-band based Group delay segmentation of spontaneous speech into syllable-like units”, EURASIP Journal on Applied Signal Processing, Vol.17, pp.2612-2625, 2004.
  9. V. Kamakshi Prasad, T. Nagarajan and Hema A. Murthy, “Automatic segmentation of continuous speech using minimum phase group delay functions”, Speech Communications, Elsevier publications, Vol.42, pp.429-446, 2004.
  10. T. Nagarajan, V. Kamakshi Prasad and Hema A. Murthy, “The minimum phase signal derived from the root cepstrum”, IEE Electronic Letters, Vol. 39, No. 12, pp 941-942 , 2003.
  11. Ramani B, ActlinJeeva, P. Vijayalakshmi and T. Nagarajan, “A multi-level GMM-based cross lingual voice conversion using language specific mixture weights for polyglot synthesis”, Circuits, Systems and Signal Processing (submitted).
  12. G. Anushiya Rachel, S. Sreenidhi,  P. Vijayalakshmi, T. Nagarajan, “Incorporation of Happiness in Neutral Speech by Modifying Time-Domain Parameters of Emotive-Keywords”, International Journal of Circuits, Systems and Signal Processing (submitted).
  13. Ramani B, P. Vijayalakshmi and T. Nagarajan, “A multilingual to polyglot speech synthesizer for Indian languages using multi-level GMM-based cross-lingual voice conversion”, Speech Communication , Elsevier (submitted).
  14. G. Anushiya Rachel, V. SherlinSolomi, P. Vijayalakshmi and T. Nagarajan, “A low footprint context-independent HMM-based speech synthesizer for Tamil”, International Journal of Speech Technology (submitted).
  15. N. Sripriya, T. Nagarajan, “Estimation of glottal closure instants considering the speech signal as a spectrum”, IET Electronic Letters. (submitted)