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   Speech Processing

Journals Publications

  1. R. Muralishankar and A.G.Ramakrishnan, “Pseudo Complex Cepstrum using Discrete Cosine Transform,” International Journal of Speech Technology, 2005, Vol. 8, pp. 181-191. (Download)

  2. R Muralishankar, A.G.Ramakrishnan and P Prathibha, “Modification of Pitch using DCT in the Source Domain,” Speech Communication, 2004, Vol. 42/2, pp. 143-154.(Download)

Conference Publications

  1. Vikram Ramesh Lakkavalli, K V Vijay Girish and A G Ramakrishnan, “Sub-band Envelope Approach to Obtain Instants of Significant Excitation in Speech,” Proc. 18th National Conference on Communications (NCC 2012), 2012, Kharagpur, India. (Download)

  2. Vikram Ramesh Lakkavalli, Arulmozhi P and A G Ramakrishnan, “Continuity Metric for Unit Selection based Text-to-Speech Synthesis,” IEEE International Conference On Signal Processing & Communications (SPCOM 2010), 2010, Bangalore, India.(Download)

  3. K.Partha Sarathy and A.G.Ramakrishnan, “A Research bed for unit selection based text to speech synthesis,” Proc. IEEE Workshop on spoken language technolog (SLT 08), Dec. 15-18, 2008, Goa, India.(Download)

  4. Rangarao Muralishankar, Mamindapalli Ravi Shanker, A. G. Ramakrishnan., “ Perceptual-MVDR based analysis-synthesis of pitch synchronous frames for pitch modification.” Proc. 2008 IEEE International Conf. Multimedia and Expo, ICME 2008, June 23-26 2008, Hannover, Germany. pp. 81-84, IEEE, 2008.(Download)

  5. K.Partha Sarathy and A.G.Ramakrishnan, “Text to speech synthesis system for mobile applications,” Proc. Workshop in Image and Signal Processing (WISP-2007), IIT Guwahati, Dec 28-29 2007, pp. 74-77.(Download)

  6. H.G.Ranjani, G.Ananthakrishnan and A.G.Ramakrishnan, “Sinusoidal analysis and music inspired filter bank for training-free speech segmentation for TTS,” Proc. Workshop in Image and Signal Processing (WISP-2007), IIT Guwahati, Dec 28-29 2007, pp. 78-81.(Download)

  7. H.G.Ranjani, G.Ananthakrishnan and A.G.Ramakrishnan, “Explicit segmentation of speech signals using Bach filter banks,” Proc. at Workshop in Image and Signal Processing (WISP-2007), IIT Guwahati, Dec 28-29 2007, pp. 47-50.(Download)

  8. Ravishanker, R.Muralishankar and A.G.Ramakrishnan, “Bauer Method of MVDR Spectral Factorization for Pitch Modification in the Source Domain,” Proc. IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA 2007), New Paltz, New York, October 21-24, 2007, pp. 263-266. (Download)

  9. Muralishankar, Ravishanker and A.G.Ramakrishnan, “MVDR spectral estimation for DCT based pitch modification,” Proc. 3rd Language and Technology Conference, Poznan, Poland, October 5-7, 2007, pp. 241-245.

  10. Sreekanth.M and A.G.Ramakrishnan, “Festival based maiden TTS system for Tamil language,” Proc. 3rd Language and Technology Conf., Poznan, Poland, Oct 5-7, 2007, pp. 187-191. (Download)

  11. G.Ananthakrishnan, H.G.Ranjani and A.G.Ramakrishnan, “Comparative study of filter-bank mean-energy distance for automated segmentation of speech signals,” Proc. Intern. Conf. Sig. Proc. Commn. Networking, Chennai, Feb 22-24, 2007, pp. 6-10. (Download)

  12. G.Ananthakrishnan and A.G.Ramakrishnan, “Relative pitch tracking for singing voice as application in query by humming systems,” Proc. IV IASTED Intern. Conf. Sig. Proc. Pattern Recog. Applications SPPRA 2007, Austria, Feb. 14-16, 2007, pp. 275-280. (Download)

  13. G.Ananthakrishnan, H.G.Ranjani and A.G.Ramakrishnan, “Language independent automated segmentation of speech using Bach scale filter-banks,” Proc. IV Intl. Conf. on Intelligent Sensing Info. Proc., (ICISIP 2006), Dec 15-18, 2006, pp. 115-120. (Download)

  14. R.Murali Shankar, Lakshmish.N.Kaushik, and A.G.Ramakrishnan, “Time Scaling of Speech and Music using Independent Subspace Analysis,” Proc. Intern. Conf. Signal Processing and Communication, Bangalore, Dec 11 - 14, 2004, pp. 310-314.(Download)

  15. R.Murali Shankar, A.G.Ramakrishnan and Lakshmish.N.Kaushik, “Time Scaling of Speech using Independent Subspace Analysis,” Proc. INTERSPEECH 2004 8th Intern. Conf. Spoken Language Processing, Oct 4 - 8, 2004, Vol 3, pp. 2465 - 2468. (Download)

  16. Joel Pinto, R.Muralishankar and A.G.Ramakrishnan, “ICA in Speech Recognition using HMM's,” Proc. V International Conf Adv in Pattern Recognition (ICAPR 2003), ISI, Kolkata, Dec 10-13, 2003.

  17. R.Muralishankar, Srikanth and A.G.Ramakrishnan, “Subspace and hypothesis based effective segmentation of co-articulated basic-units for concatenative speech synthesis,” IEEE TENCON, Oct 15-17, Bangalore, 2003, Vol. 1, pp. 388-392. (Download)

  18. R.Muralishankar, A.Vijay Krishna and A.G.Ramakrishnan, “Subspace based Vowel Consonant Segmentation,” Proc. IEEE Workshop on Statistical Signal Processing, Sept 28 - Oct 1, 2003, St.Louis, Missouri, pp. 589- 592. (Download)

  19. R.Muralishankar, A.G.Ramakrishnan and P.Prathibha, "Warped-LP residual resampling using DCT for pitch modification," Proc. ICSLP, Denver, Colorado, Sept. 22-25, 2002.

  20. G.L.Jayavardhana Rama, A.G.Ramakrishnan, R.Muralishankar and P.Prathibha, “A Complete Text-to-Speech Synthesis System in Tamil,” Proc. IEEE 2002 Workshop Speech Synthesis, Santa Monica, CA USA, Sep. 11-13, 2002, pp. 191-194. (Download)

  21. R.Muralishankar and A.G.Ramakrishnan, “DCT based pseudo complex cepstrum,” Proc. IEEE ICASSP 2002, Florida, USA, May 13 - 17, 2002, Vol. 1, pp. 521-524.(Download)

  22. K.G.Aparna, G.L.Jayavardhana Rama and A.G.Ramakrishnan, “Machine reading of Tamil books - an aid for the blind,” Proc. International Conf. on Biomedical Engg. BioVision 2001, Bangalore, Dec. 21-24, 2001, pp. 173-177.

  23. G.L.Jayavardhana Rama, A.G.Ramakrishnan, V.Vijay Venkatesh, and R.Muralishankar, “Thirukkural: a text-to-speech synthesis system,” Proc. Tamil Internet 2001, Kuala Lumpur, August 26-28, 2001, pp. 92-97. (Download)

  24. R.Muralishankar, M.Anoop, T.Harish, A.K.Rohit and A.G.Ramakrishnan, “DCT based Pitch Modification,” Sixth Biennial Conference on Signal Processing and Communication SPCOM 01, IISc, Bangalore, July 15-18, 2001, pp. 114-117.(Download)

  25. R.Murali Shankar and A.G.Ramakrishnan, “Synthesis of Speech with Emotions,” Proc. Intern. Conf. Commn., Computers and Devices, Kharagpur, Dec. 14-16, 2000, pp. 767-770. (Download)

  26. K.Suresh and A.G.Ramakrishnan, “A DCT based approach to Estimation of Pitch,” Proc. Intern. Conf. Multimedia Processing and Systems, Chennai, Aug. 13-15, 2000, pp. 54-57.

  27. R.Murali Shankar and A.G.Ramakrishnan, “Robust Pitch detection using DCT based Spectral Autocorrelation,” Proc. Intern. Conf. Multimedia Processing and Systems, Chennai, Aug. 13-15, 2000, pp. 129-132.

  28. A.G.Ramakrishnan and V.Karthigeyan, “A preliminary speech synthesis system in Tamil,” TamilNet 99 - International Conf. on Tamil in Information Technology, Chennai, Feb. 7-8, 1999, http://www.tamilnet99.org

\A9 2012 Medical Intelligence and Language Engineering Lab - IISc Campus, Bangalore.