Hema A Murthy
Professor
Research Areas: Speech Processing, Speech Synthesis and Recognition,
Multimodal interfaces, Computer Networks
and Pattern Recognition
- Education:
- Ph.D., Computer Science, IIT Madras, 1992
- M.Eng, Electrical and Computer Engineering, McMaster University,Canada, 1986
- B.E., ECE, Osmania University, 1980
Associated Labs:
- DONlab: Communications Systems and Indic Computing
Courses (Teaching Currently):
- CS6810 - Information Theory and Coding - July 2010.
- CS6690 - Pattern Recognition - July 2010.
Courses (that I have Taught Before):
- Advanced Data Structures and Algorithms
- Data Structures and Algorithms
- Computer Networks
- Computer Graphics
- Signals and Systems
- Pattern Recogntion
- Fundamentals of Computing
- Numerical Computing
- Programming and Data Structures
- Speech Technology
- Principles of Communication
- Information Theory and Coding
- Introduction to Computing
- Algorithms for Digital Signal Processing
- Digital Image and Speech Processing
- Object Oriented Systems Lab
- Advanced Programming Lab
- Higher Level Language Lab
Research Scholars (current):
- Abhijit Pradhan (PhD - External)
- R Padmanabhan (PhD)
- M R Srikanth (Phd)
- Golda Brunet (Phd)
- Sarala (Phd)
- Saad Yunus Sait (Phd)
- Rajeev Rajan (Phd)
- Chaitanya Jetti(MS)
- M V Vinodh(MS)
- Subhadeep Dey (MS)
- Cyriac James (MS)
- Santosh Chaudhuri (MS)
- Vadiraj (MS)
Research Scholars (completed):
S Ranbir Singh "On the significance of crawling, clustering and real-time
implicit feedback in web search engines," (Co-guide: T A Gonsalves) Phd Thesis, 2010.
Nikhil Ranjan "GARCH Models for TCP Based Denial of Service," (co-guide: T A Gonsalves) M S Thesis, 2010.
P R Ramya, ``Incorporating acoustic feature diversity in linguistic search space for speech recognition,'' (Co-guide C S Ramalingam) MS Thesis, 2009.
Sadhana Chevireddy, ``A syllable-based segment vocoder,'' (Co-guide: Dr. C Chandra Sekhar, Dept. of CS\&E), MS Thesis, 2009.
P G Deivapalan, ``A Segmented Syllable-based, Isolated Word Recognizer for
Indian Languages,'' M S Thesis, 2009.
Pranav Hamnabhadkar, ``Pattern Recognition and Synthesis of Materials Microstructures,'' (Co-guide: Dr. K Balasubramanian, Director, NFTDC, Hyderabad) MS Thesis, 2009.
Sreenivasulu Nagireddy, ``A Pattern Recognition Approach to Block Cipher
Identification,''(Co-guide: Dr. C Chandra Sekhar, Dept. of CS\&E), MS Thesis, 2009.
M Kasirajan, ``Patram: A unified word processing system for handwritten character recognition in Indian languages,'' (Co-guide: Dr. Srinivasa Chakravarthy, Dept of BT), MS Thesis, IIT Madras, 2008.
P Sreehari Krishnan, ``Voice activity detection using group delay functions,'' M S Thesis, IIT, Madras, 2007.
A Lakshmi, ``A Syllable-based approach to continuous speech recognition inIndian languages,'' (Co-guide, Dr. C S Ramalingam, Dept. of EE) M S Thesis, IIT, Madras, 2007.
Samuel Thomas, ``Natural sounding Text-to-speech synthesis based on
syllable-like units,'' (Co-guide: Dr. C Chandra Sekhar, Dept. of CS\&E) M S Thesis, IIT, Madras, 2007.
Dinil Mon Divakaran, ``Traffic Modeling and Analysis,'' (Co-guide: Prof. TA Gonsalves, Dept. of CS\&E) M S Thesis, IIT, Madras, 2007.
P Manohar, ``The Multimodal Interaction for the Computer: An Application
independent Approach,'' M.S Thesis, IIT Madras, 2006.
Vinod J, ``Low cost Data Communication network for Rural Telecom Management,'' (Co-Guide: Prof. T.A. Gonsalves, Dept. CS\&E, IIT Madras) M S Thesis, IIT Madras, 2006.
G L Sarada, ``Automatic Transcription of Continuous Speech into Syllable-like Units,'' M.S Thesis, IIT Madras, 2006.
Rajesh Hegde, ``The Modified Group Delay feature and its application to Speech Recognition,'' Ph.d Thesis,IIT Madras, 2005.
R Deepak, ``Distributed Intrusion Detection System,''(Co-Guide: Prof. T.A.Gonsalves, Dept. CS&E, IIT Madras), M S Thesis, IIT Madras, 2005.
Veena Desai, ``Distributed Speech Recognition,'' (Co-guide: Prof.T A Gonsalves, Dept. of CS&E, IIT Madras), M.S Thesis, IIT Madras, 2005.
T. Nagarajan, ``Implicit Spoken Language Identification Systems,'' Ph.d Thesis, IIT Madras, 2004.
G.Sirisha, ``A DSP Virtual Machine,'' M S Thesis, IIT Madras, 2004(Co-Guide: Prof. T.A.Gonsalves, Dept. CS&E, IIT Madras)
N Sridhar Krishna, ``Multilingual Text-to Speech Synthesis,'' M S Thesis IIT Madras, 2004 (Co-Guide: Prof. T.A.Gonsalves, Dept. CS&E, IIT Madras)
M Balamurugan, ``An Access Network Planner,'' M S Thesis, IIT Madras, 2004 (Co-Guide: Prof. T.A.Gonsalves, Dept. CS&E, IIT Madras)
M. A. Saifulla, ``A Pattern Matching Approach to Classifying Network Traffic,'' M.S Thesis, IIT Madras, 2003, (Co-Guide: Prof. T.A.Gonsalves, Dept. of
CS&E).
V Kamakshi Prasad, ``Segmentation and Recognition of Continuous Speech,'' Ph.D Thesis, IIT Madras, 2002.
A Ramasamy, ``LP Based Traffic Modelling and a Framework for Control,'' M.S.Thesis, IIT Madras, 2002 (Co-Guide: Prof.T.A.Gonsalves, Dept. of CS&E).
B Jyotsana, ``A Spoken Language Identification System for Indian Languages,'' M.S. Thesis, IIT Madras, 2001.
S Vela, ``A New Model of Speaker Identification based on Statistical Similarity and an Object Oriented Framework for Online Speaker Identification,'' M.S.Thesis, IIT Madras, 1999.
J Srichand, ``Word Boundary Detection in Indian Languages and its Application to Keyword Spotting,'' M.S.Thesis, IIT Madras, 1999 (Co-guide:Dr.G.V.Ramana Rao).
M Narendranath, ``Transformation of Vocal Tract Characteristics for Voice Conversion using Artificial Neural Networks,'' M.S. Thesis, IIT Madras, 1995 (Co-Guide: Prof.B.Yegnanarayana, Dept. of CS&E).
Contact Information:
BSB 307
Department of Computer Science and Engineering
Indian Institute of Technology Madras
Chennai - 600 036
Ph: +91-44-2257 4364
Fax: +91-44-2257 4352
E-mail: hema AT tenet.res.in
Research Interests: Speech processing, recognition synthesis, computer networks, multi-modal interfaces to the computer.
Social Interests: School education , Science popularisation , Communal harmony, global warming, women empowerment
Membership: IEEE Society, Indian scientists against nuclear weapons, Movement of Peace and Unity, Tamilnadu science forum, Prakriti (a group at IITM that is concerned about the environment).
Publications (Recent):
G L Sarada, A Lakshmi, Hema A Murthy and T Nagarajan, ``Automatic Transcription of
Continuous Speech into Syllable-like units for Indian Languages,'' accepted Sadhana, Indian Academy of Sciences , Vol 34, Part.2, April 2009, pp.221-233.
Rajesh M. Hegde, Hema A. Murthy and Venkata Ramana Rao Gadde, ``Significance of Joint Features Derived from The Modified Group Delay Function in Speech Processing'', EURASIP Journal on Applied Signal Processing , Vol.2007, Article ID 79032, 13 pages..
Rajesh M. Hegde, Hema A. Murthy and Venkata Ramana Rao Gadde, ``Significance of The Modified Group Delay Function in Speech Recognition'', IEEE Transactions on Speech and Audio Processing, Vo1.15, Issue.1, Jan 2007, pp.190-202.
T Nagarajan and Hema A Murthy, ``Language Identification using Acoustic Log-Likelihood of Syllable-like units,'' Speech Communicatons, Vol.48, pp.913-926, 2006.
Y R Venugopalakrishna, M V Vinodh, Hema A Murthy and C S Ramalingam, ``Methods for improving the quality of syllable based speech synthesis,'' Proc. SLT-2008.
Ramya Rasipuram, Rajesh M Hegde and Hema A Murthy, ``Significance of group delay based acoustic features in the linguistic feature space for syllable recognition,'' Proc. INTERSPEECH 2008, Australia, 22-26 Sept, 2008.
Ramya Rasipuram, Rajesh M Hegde and Hema A Murthy, ``Incorporating acoustic diversity into the linguistic feature space for syllable recognition,'' Proc. 16th European Conference on Signal Processing and Communication, EUSIPCO-2008,
Lausanne,Switzerland, 24-29 August, 2008.
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,'' Proc. 16th European
Conference on Signal Processing and Communication, EUSIPCO-2008, Lausanne,
Switzerland, 24-29 August, 2008.
R.Padmanabhan, Hema A. Murthy, ``On parametric representations of the modified
group delay,'' Proc. International Conference on
Language and Image Processing (ICALIP 2008), Shanghai, China, July, 2008.
Sanasam Ranbir Singh, Hema A. Murthy, Timothy A. Gonsalves, ``Determining
user's interest in real time,'' Proc. WWW 2008, Beijing, China, April 2008 (Ref: http://www2008.org/papers/Proceedings.html), pp.1115-1116.
Sanasam Ranbir Singh, Hema A. Murthy, Timothy A. Gonsalves, ``Effect of
word
density on measuring words association,'' Proc. ACM Compute Conference, Bangalore, 2008.
Sree Hari Krishnan, P., Padmanabhan, R., Hema A Murthy, ``Voice Activity Detection using Group Delay Processing on Buffered Short-term Energy,'' Proc. NCC 2007 pp.169-172, Jan 26-28, 2007, IIT Kanpur.
P Sreehari Krishnan, R Padmanabhan, Hema A Murthy ``Robust Voice Activity Detection using Group Delay Functions,'' ICIT-2006 , pp.2603-2607, Dec 15--17, 2006, Mumbai, India.
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 pp.1-12, Ireland, Oct. 2006 (received the Best Paper award )
Dinil Mon Divakaran, Hema A Murthy and Timothy A Gonsalves, ``Detection of SYN Flooding Attacks using Linear Prediction Analysis,'' 14th IEEE International Confernce on Networks, ICON-2006, Singapore, ICON-2006 , pp.218-223, Singapore, Sep 2006.
A Lakshmi and Hema A Murthy ``A Syllable-based Continuous Speech Recogniser for Tamil,'' INTERSPEECH 2006 , Pittsburgh, pp.1878-1881, Sept 2006
Hemant Tyagi, Rajesh M Hegde, Hema A Murthy and Anil Prabhakar ``Automatic Identification of Bird Calls using Spectral Ensemble Average Voice Prints,''
EUSIPCO 2006, Sept 4-8, 2006,Florence, Italy.
Samuel Thomas, M Nageshwar Rao, Hema A Murthy and C S Ramalingam, ``Natural Sounding Speech based on Syllable-like Units,'' EUSIPCO 2006, Sept 4-8, 2006, Florence, Italy.
P Manohar, Hema A Murthy and T A Gonsalves ``An Application Independent Multimodal interface for the Computer,'' Proc. NCC-2006, pp.275-279, Jan 27-29, 2006, IIT Delhi.
T Nagarajan and Hema A Murthy, ``Group Delay based Segmentation of
Spontaneous Speech into Syllable-like units,'' EURASIP Journal of
Applied Signal Processing, Vol.17, pp.2614-2625, 2004.
P Manohar and Hema A Murthy, ``Multimodal Interfaces to the Computer,'' INDICON-2005, Chennai, Dec 12-13, 2005.
V. Kamakshi Prasad, T. Nagarajan and Hema A. Murthy, "Automatic
segmentation of continuous speech using minimum phase group delay
functions," Speech Communication, Elsevier, vol.42, pp.429-446, 2004.
Awards:
Received the IBM Faculty award for the year 2006.
Other Activities:
Personal Photo Gallery
Trek Photos
Detailed Curriculum Vitae