Indic Computing and Communication Systems Lab
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DONlab, Dept. of Computer Science and Engineering
IIT Madras
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Publications

     2011 

    1. Rajeev Rajan, Subhadeep Dey, R. Padmanabhan, Hema A. Murthy, Feature Diversity for Emotion, Language and Speaker Verification , National Conference on Communications (NCC), Indian Institute of Science, Bangalore, 2011.
    2. Cyriac James and Hema A. Murthy, Time Series Models and its Relevance to Modeling TCP SYN Based DoS Attacks , in 7th EURO-NF NGI, Germany, June 2011 (URL)
    3. Angelos Marnerides, Cyriac James, Alberto Schaeffer-Filho, Saad Yunus Sait, Andreas Mauthe, Hema Murthy, Multi-Level Network Resilience: Traffic Analysis, Anomaly Detection and Simulation , Special Issue of ICTACT Journal on Communication Technology, Issue II, Vol. II, 2011 (URL)

     2010 

    1. R.Padmanabhan, Hema A. Murthy, Acoustic feature diversity and speaker verification , pp. 2110-2113, Proc. Interspeech 2010, Makuhari, Japan.
    2. Srikanth M.R., Hema A. Murthy, Discriminative training of Gaussian mixture speaker models: A new approach, pp.1-5, National Conference on Communications (NCC), IIT Madras, Chennai, 2010. DOI: 10.1109/NCC.2010.5430204, (URL)
    3. Vinodh M.V., Ashwin Bellur, Badri Narayan K., Deepali Thakare M., Anila Susan, Suthakar N.M., Hema A. Murthy, Using polysyllabic units for text to speech synthesis in Indian languages, pp.1-5, National Conference on Communications (NCC), IIT Madras, Chennai, 2010. DOI: 10.1109/NCC.2010.5430193, (URL)

     2009 

    1. R.Padmanabhan, P. Sree Hari Krishnan, Hema A. Murthy, Robustness of phase-based Features for Speaker Recognition, pp. 2355-2358, Proc. Interspeech 2009, Brighton, England
    2. R.Padmanabhan, Rajesh M. Hegde, Hema A. Murthy, Dynamic Selection of Magnitude and Phase based Acoustic Feature Streams for Speaker Verification, Proc. European Signal Processing Conference 2009, pp. 1244-1248, Glasgow, Scotland
    3. Chaitanya Kumar.J, and Hema A. Murthy, Entropy based Measures for Incorporating Feature stream Diversity in the Linguistic Search Space for Syllable based Automatic Annotated Recogniser , Proc. of National Conference on Communications (NCC) 2009, IIT Guwahati, January 2009. (pdf)
    4. Padmanabhan.R and Hema A. Murthy, Feature Evaluation for Speaker Identification in Radio Communications Channel , Proc. of National Conference on Communications (NCC) 2009, IIT Guwahati, January 2009. (pdf)

     2008 

    1. Venugopalakrishna.Y.R.,Vinodh.M.V., Hema A. Murthy and C.S. Ramalingam, Methods for Improving the Quality of Syllable based Speech Synthesis ,Proc. of Spoken Language Technology (SLT) 2008 workshop, pages 29 -32, Goa, December 2008 (pdf)
    2. Ramya R, Rajesh M Hegde and Hema A. Murthy, Incorporating Acoustic Feature Diversity into the Linguistic Search Space for Syllable based Speech Recognition ,accepted for presentation in 16th European Conference on Signal Processing and Communication, EUSIPCO-2008, Lausanne, Switzerland.(pdf)
    3. Ramya R, Rajesh M Hegde and Hema A. Murthy, Significance of Group Delay based Acoustic Features in the Linguistic Search Space for Robust Speech Recognition , accepted for presentation in INTERSPEECH-2008, Brisbane, Australia, September 2008 (pdf)
    4. Sadhana Chevireddy, Hema A. Murthy and C. Chandra Sekhar, Signal processing based segmentation and HMM based automatic clustering for a syllable based segment vocoder at 1.4Kbps , accepted for presentation in 16th European Conference on Signal Processing and Communication, EUSIPCO-2008, Lausanne, Switzerland.(pdf)
    5. Sadhana Chevireddy, Hema A. Murthy and C. Chandra Sekhar, A syllable based segment vocoder , Proc. of 14th National Conference on Communications, Feb 2nd, 2008, IIT Bombay, page no. 442-446
    6. Sanasam Ranbir Singh, Hema A. Murthy, Timothy A. Gonsalves, Effect of word density on measuring words association. , 1st ACM Bangalore Compute 2008, Article 11 Jan 18-20 2008, Bangalore India.
    7. Sanasam Ranbir Singh, Hema A. Murthy, Timothy A. Gonsalves, Determining user's interest in real time. 17th Intl. conference on World Wide Web, Beijing, China. pp. 1115-1116, April 21-25, 2008.
    8. R.Padmanabhan, Sree Hari Krishnan P., Hema A Murthy, A pattern recognition approach to VAD using modified group delay , Proc. of 14th National conference on Communications, Feb 2008, IIT Bombay, page no. 432-437
    9. R.Padmanabhan, Hema A. Murthy, On parametric representations of the modified group delay , presented at the International Conference on Audio, Language and Image Processing (ICALIP 2008), Shanghai, China.
    10. C.Jagadish, S. Thanga prakash and Timothy A. Gonsalves, Network Management Traffic Optimization, NCC 2008. (pdf)
    11. G. Sathish Kumar, Timothy A. Gonsalves, QoS in Ethernet Access Ring , NCC 2008 (pdf)
    12. Suresh Guduru, Rajan D. N., Jakir Rehman and Timothy A.Gonsalves, Virtual Tuner Network for Video Services over the CATIUS Cable Access Network (pdf)

     2007 

    1. Nisha P Kurur, Ishpal Singh Gill, N Usha Rani, Timothy A Gonsalves, Transport Data Security in Network Management System. NCC 2007
    2. Sree Hari Krishnan.P, Padmanabhan.R and Hema A Murthy, "Voice Activity Detection using Group Delay Processing on Buffered Short-term Energy", NCC 2007
    3. Sanasam Ranbir Singh, "Estimating Web the Rate of Web Page Updates",IJCAI-07.
    4. R. Madanagopal, N. Usha Rani and Timothy A. Gonsalves, "Path Computation Algorithms for Dynamic Service Provisioning in SDH Networks," 10th IFIP/IEEE Symposium on Integrated Management (IM), pp. 206 - 215, May 2007 (pdf)

     2006 

    1. Dinil Mon Divakaran, Hema A. Murthy and Timothy A. Gonsalves, "Traffic Modeling and Classification Using Packet Train Length and Packet Train Size,'' 6th IEEE International Workshop on IP Operations and Management, IPOM 2006,Ireland, Oct. 2006. (pdf)
    2. Dinil Mon Divakaran, Hema A. Murthy and Timothy A. Gonsalves, "Detection of SYN Flooding Attacks Using Linear Prediction Analysis" 14th IEEE International Conference on Networks, ICON 2006, Singapore, Sep. 2006.(pdf)
    3. Samuel Thomas, M. Nageshwara Rao, Hema A. Murthy, C. S. Ramalingam, Natural Sounding TTS based on Syllable-like Units, in appear in the proceedings of 14th European Signal Processing Conference, Florence, Italy, Sep 2006.(pdf)
    4. Lakshmi A. and Hema A. Murthy, "A Syllable based continuous speech recognizer for Tamil", Interspeech 2006, ICSLP, Pittsburgh, Sep. 2006. (pdf)
    5. T. Nagarajan and Hema A. Murthy, "Language Identification using acoustic log-likelihoods of syllable-like units", Speech Communication 48, 2006, pp.913-926. (pdf)
    6. Sanasam Ranbir Singh, "Modeling the process of Web Page Updates as a Non-homogeneous Process", Presented in National Workshop on AI 2006, Mumbai, July 3-4, 2006. Detail Study of this paper is also accepted in IJCAI-07 for POSTER PRESENTATION (pdf)
    7. Sree Hari Krishnan P, R. Padmanabhan, Hema A. Murthy, "Robust Voice Activity Detection Using Group Delay Functions", Accepted for presentation to ICIT-2006. (pdf)
    8. Ravinder Thirumala, Usha Rani and Timothy A. Gonsalves, An Event Notification Service based on XML Messaging on Different Transport Technologies, ICIT 2006. (pdf)

     2005 

    1. Rajesh M.Hegde, Hema A.Murthy and Venkata Ramana Rao Gadde, "Speech Processing using Joint Features Derived from The Modified Group Delay Function,'' in Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP-2005}, Philadelphia, U.S.A, SP-P6.8, March 2005. (pdf)
    2. Dinil Mon Divakaran and Hema A. Murthy and Timothy A. Gonsalves, "Effective Bandwidth Utilization For Multimedia Data Over Low Bandwidth Links,'' in Proceedings of the 11th National Conference on Communications, NCC '05, Jan. 2005, pp 236-240.(pdf)
    3. M. Nageshwara Rao, Samuel Thomas, T. Nagarajan and Hema A. Murthy, Text-to-speech synthesis using syllable-like units, in the proceedings of National Conference on Communications, IIT Kharagpur, India, Jan 2005, pp. 277-280. (pdf)
    4. Samuel Thomas, Hema A. Murthy, C. Chandra Sekhar, Distributed speech synthesis for embedded devices - an analysis, in the proceedings of National Conference on Communications, IIT Kharagpur, India, Jan 2005, pp. 273-276. (pdf)
    5. R. Deepak,  Timothy A. Gonsalves and Hema A. Murthy, "Network Security Management for a National ISP",  Accepted National Communication Conference NCC-2005 (pdf) 
    6. Rajesh M.Hegde and Hema A.Murthy, "Automatic Language Identification and Discrimination using The Modified Group Delay Feature'', in Proceedings of International Conference on Intelligent Sensing and Information; Processing, ICISIP-2005}, Chennai, pp. 395 - 399,  Jan 2005. (pdf)

     2004 

    1. Rajesh M.Hegde and Hema A.Murthy, "An Alternative Representation of Speech using The  Modified Group Delay Feature'',  in Proceedings of International Conference on Signal Processing and Communications, SPCOM-2004}, Bangalore, Su C1.1, Dec 2004.  (ps)
    2. Rajesh M.Hegde and Hema A.Murthy, "Cluster and Intrinsic  Dimensionality Analysis of The Modified Group Delay Feature for Speaker Classification'', Lecture Notes in Computer Science, {\bf LNCS 3316},  pp. 1172 - 1178, Springer Verlag, From Proceedings of the ICONIP-2004}, Calcutta, India, Nov 2004.  (pdf)
    3.  G.L.Sarada,N. Hemalatha, T. Nagarajan, Hema A. Murthy,"Automatic Transcription of Continuous Speech Using Unsupervised and Incremental Training'', ICSLP-2004, October, Korea. (pdf)
    4. 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. (pdf) 
    5. Rajesh M.Hegde, Hema A.Murthy and Venkata Ramana Rao Gadde, ''Continuous Speech Recognition using Joint Features derived from The Modified Group Delay Function and MFCC,'' in  Proceedings of the INTERSPEECH-ICSLP, Accepted for presentation, Oct 2004. (ps)
    6. Rajesh M.Hegde, Hema A.Murthy and Venkata Ramana Rao Gadde, ''The Modified Group Delay Feature : A New Spectral Representation of Speech,'' in Proceedings of the INTERSPEECH-ICSLP, Accepted for presentation, Oct 2004. (ps)
    7. Rajesh M.Hegde, Hema A.Murthy and Venkata Ramana Rao Gadde, '' Application of the  Modified Group Delay Function to Speaker Identification and Discrimination,'' in  Proceedings of the ICASSP, Vol 1, pp. 517-520, May 2004. (ps)
    8. G. L. Sarada, N. Hemalatha, T. Nagarajan, and Hema A. Murthy, "Automatic transcription of continuous speech using unsupervised and incremental training'', ICSLP-2004 - Accepted for presentation. (pdf)
    9. T. Nagarajan, Hema A. Murthy and N. Hemalatha, "Automatic segmentation and labeling of continuous speech without bootstrapping'', EUSIPCO-2004 - Accepted for presentation. (pdf)
    10. 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. (pdf)
    11. T. Nagarajan and Hema A. Murthy, " Non-bootstrap approach to segmentation and labeling of continuous speech'', Proc. NCC-2004, IISc, Bangalore, India, Jan. 2004, pp.508-512. (pdf)
    12. A. G. K. Vanchynathan, N. Usha Rani, C. Charitha and Timothy A. Gonsalves, "Distributed NMS For Affordable Communications", Proc. National Communication Conference NCC-2004, pp. 346-351 (pdf)

     2003 

    1. Rajesh M.Hegde and Hema A.Murthy,''Speaker Identification using the modified group delay feature,'' in  International Conference on Natural Language Processing-ICON 2003, pp. 159-167, December 2003. (ps)
    2. T. Nagarajan, Hema A. Murthy, and, Rajesh M. Hegde, "Segmentation of speech into syllable-like units'', Proc. EUROSPEECH-03, Geneva, Switzerland, Sep. 2003, pp.2893-2896. (pdf)
    3. 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. (pdf)
    4. 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. (pdf)

     2002 

    1. 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. (pdf)
    2. 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. (pdf)

     2001 

    1. 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. (pdf)

     2000 

    1. A. Ramasamy, Hema A. Murthy, Timothy A. Gonsalves, "Linear Prediction For Traffic Management And Fault Detection", Proc. ICIT, December 2000. (ps)
    2. T. A. Gonsalves, Ashok Jhunjhunwala, Hema A. Murthy, Hari Selvarajan, D. N. Rajan, R. Siddappa, N. Jayaprakash, Prakash Chandra, A. Ramasamy, John Joseph, Vaishali P. Mane, R. Srinivasan, "Integrated Management For Modern Telecom Networks", Proc NCC 2000. (ps)
    3. A. Ramasamy, Hema A. Murthy, Timothy A. Gonsalves, "Linear Prediction For Network Management", Proc NCC 2000. (ps)
    4. Jyotsna Balleda, Hema A. Murthy, and T. Nagarajan, "Language identification from short segment of speech'', Proc. ICSLP-2000, Vol.III, pp.1033-1036. (pdf)

     Other 

    1. Hema A. Murthy, Bhaskar Ramamurthi, Timothy A. Gonsalves, K. Balamurugan, Shubha Augustine and K. Vijayalakshmi , "CygPlan-An Installation Planning Tool" (doc)
    2. Hema A. Murthy, Timothy A. Gonsalves, Rolland Enoch, G. Sirisha, Valli Kannu, M. Mahesh, K. Geetha, Saravanan and  Raghu Kishore, "DSP Virtual Simulator" (doc)
    3. Hema A. Murthy, Timothy A. Gonsalves, G. Sirisha and  Valli Kannu, "DSP Virtual Machine Language" (pdf)
    4. J. Patricia, K. Ratheesh, V. S. Shenoi, G. Sreepriya, Timothy A. Gonsalves and Hema A. Murthy, "Indian Language Support For Linux Operating System" (pdf)
    5. Anitha Nalluri, Bala saraswathi A., Bharathi S., Hema A. Murthy, Patricia J., Ranbir Singh S., Timothy A. Gonsalves, Vidhya M. S. and Vivekanathan K., "Indian Language Support For X Window System" (pdf)
    6. M. A. Saifulla, Hema A. Murthy and Timothy A. Gonsalves, "LP Based Approach to Bandwidth Management on a Network". (ps)
    7. Jyotsna Balleda, Hema A. Murthy, and T. Nagarajan, "Language identification from short segment of speech'', Proc. ICSLP-2000, Vol.III, pp.1033-1036. (pdf)
    8. Hema A. Murthy, K.V. Madhu Murthy and B. Yegnanarayana, "Format Extraction From Fourier Tranform Phase". (pdf)
    9. Hema A. Murthy, Simon Haykin, "Bayesian Classification of Surface-Based Ice-Radar Images". (pdf)
    10. Hema A. Murthy, K.V. Madhu Murthy and B. Yegnanarayana, "Format Extraction From Phase Using Weighted Group Delay Function". (pdf)
    11. Hema A. Murthy, Venkata Gadde, "The modified Group Delay Function and its Application To Phoneme Recognition". (pdf)
    12. B. Yegnanarayana, Hema A. Murthy and V. R. Ramachandran, "Processing Of Noisy Speech Using Modified Group Delay Functions". (pdf)
    13. G. Duncan, B. Yegnanarayana and Hema A. Murthy, "A Nonparametric Method Of Formant Estimation Using Group Delay Spectra". (pdf)
    14. B. Yegnanarayana and Hema A. Murthy, "Significance Of Group Delay Functions in Spectrum Estimation". (pdf)
    15. Hema A. Murthy, Francoise, Larry P. Heck, Mitchel Weintraub, "Robust Text-Independent Speaker Identification over Telephone Channels". (pdf)
    16. M. Narendranath, Hema A. Murthy, S. Rajendran and B. Yegnanarayana, "Transformation Of Formats For Voice Conversion Using Artificial Neural Networks". (pdf)