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Prof. Arun Kumar

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Arun Kumar
  • About
  • Research Interest
  • Contact Information
  • Funded Project
  • Student Project
  • PhD Scholar
  • Publication

About

Dr. Arun Kumar received the B.Tech, M.Tech and PhD degrees in Electrical Engineering from IIT, Kanpur in 1988,1990 and 1995 respectively. He was a Visiting Researcher at the ECE Department,University of California, Santa Barbara, from 1994 to 1996. Since December 1996, he has been with the Centre for Applied Research in Electronics (CARE), IIT Delhi, where he is currently a Professor. He was Head of CARE from April 2012 to August 2016. He was also Head of the Instrument Design and Development Centre of IIT Delhi from May 2015 to August 2016.

Dr. Arun Kumar’s research interests span the areas of digital signal processing, underwater and air acoustics, speech processing for human and machine communication and multi-sensor data fusion for mobile and wearable devices. He is an Inventor on 5 US Patents (2 granted and 3 applications published). He has published over 100 papers in refereed journals and conferences and has supervised 50 funded R&D projects from government organizations and Indian and foreign industries.These have led to about 20 Technology/Knowhow transfers to industry and government organizations. Many technologies developed by him are deployed in the field and are in practical use. He is an Editor of the IETE Journal of Research since 2009 and a Member of the Executive Committee of the India Chapter of IEEE Oceanic Engineering Society.

Course Offered

    1. Architectures and Algorithms for DSP Systems.

    2. Human and Machine Speech Communication.

    3. Sensor Array Signal Processing.

    4. Statistical Signal Processing.

      



Research Interest

1. Digital signal processing.
2. Underwater and air acoustics.
3. Human and machine speech communication technologies.
4. Multi-sensor data fusion for mobile and wearable devices, and IoT.

Current Activities

1. Underwater and air acoustic vector sensors.
2. Acoustics based detection and localization in air and underwater media.
3. Sonar signal processing algorithms.
4. Speech analytics.
5. Context awareness using multi-sensor data fusion.
6. Underwater navigation algorithms.

Contact Information

Email arunkm@care.iitd.ac.in
Telephone (O) +91-11-26591109
(R)+91-11-26591560, 26581084
Facsimile +91-11-26591109, 26596219
Address Centre for Applied Research in Electronics,
Indian Institute of Technology, Delhi
Hauz Khas, New Delhi - 110 016, INDIA.

Sponsored Reasearch Projects

  1. PI: R. Bahl, Co-PI: A. Kumar, M. Agarwal, “Multi-target location estimation using LOFIX and least squares methods with distributed DIFAR sonobuoys”, 2015-16.

  2. PI: A. Kumar, Co-PI: R. Bahl, M. Agarwal, “Implementation and performance comparison of estimation methods for DIFAR sensors,” 2014-2015.

  3. PI: M. Agarwal, Co-PI: A. Kumar, R. Bahl, “Study and implementation of TRM based OFDM underwater acoustic communication,” 2014-2015.

  4. PI: M. Agarwal, Co-PI: A. Kumar, R. Bahl, "Development of underwater acoustic communication system based on time reversal mirror – Phase 2,” 2014-2016.

  5. PI: R. Bahl, Co-PI: A. Kumar, M. Agarwal, "Sonic characteristics of marine species," 2012-2017.

  6. PI: A. Kumar, Co-PI: M. Agarwal, "Studies on snow acoustic reflectometry and development of electronics for stratigraphy and snow water equivalent determination," 2012-2015.

  7. PI: A. Kumar, Co-PI: R. Bahl, M. Agarwal, "State-of-the-art facilities in underwater electronics at CARE, IIT Delhi," 2011-2016.

  8. PI: M. Agarwal, Co-PI: A. Kumar, R. Bahl, "Time-reversal mirrors and MIMO-OFDM underwater communications," 2009-2013.

  9. PI: M. Sharma, Co-PI: A. Kumar, K. Paul, "Framework for intelligent sensor data fusion," Phase I-IV, 2008-2012.

  10. PI: M. Agarwal, Co-PI: A. Kumar, R. Bahl, "Design of block-layered space-time codes," 2008-2011.

  11. PI: A. Kumar, Co-PI: R. Bahl, M. Agarwal, "Realization of prototype low power acoustic signal processor module for remote manned/unmanned platforms," 2007-2012.

  12. PI: A. Kumar, Co-PI: R. Bahl, M. Agarwal, "Design and implementation of target detection module for underwater passive surveillance," 2007-2010.

  13. PI: S. Banerjee, Co-PI: A. Kumar, S. Chaudhury, P. Kalra, S. D.Joshi, "TCS Media Laboratory: Computer Vision based active surveillance." 2006-2007.

  14. PI: A. Kumar, Co-PI: R. Bahl, M. Agarwal, "Upgradation of laboratory facilities in the area of Underwater Electronics at CARE," 2005-2010.

  15. PI: R. Bahl, Co-PI: A. Kumar, M. Agarwal, "Design of platform classifier using multi-sensor data fusion," 2005-2006.

  16. PI: S. Chaudhury, Co-PI:S. D. Joshi, A. Kumar, "E-video: Video information processing with enhanced functionality," 2004-2006.

  17. PI: A. Kumar, Co-PI: R. Bahl, M. Agarwal, "Design of target classification method for passive surveillance sonar," 2003-2006.

  18. PI: S. Tuli, Co-PI: A. Kumar, G. Bose, "Novel studies on propagation and signal processing of thermal waves for defect localization with applications to non-destructive characterization," 2002-2005.

  19. PI: R. Bahl, Co-PI: A. Kumar, "Study and simulation of passive surveillance techniques for autonomous platforms," 2000-2002 (A. Kumar was PI from July 2002 to end of project).

  20. PI: R. Bahl, Co-PI: A. Kumar, "Development of techniques for low probability of intercept secure underwater LAN links," 2000-2002. (A. Kumar was PI from July 2002 to end of project).

  21. PI: R. Bahl, Co-PI: A. Kumar, "Design and development of a prototype compact low-power acoustic signal processor module for remote manned/unmanned platforms," 2000-2003. (A. Kumar was PI from July 2002 to end of project). (A. Kumar was PI from July 2002 to end of project).

  22. PI: A. Kumar, Co-PI: R. Bahl, "Investigations of novel designs for efficient wideband speech and audio coding," 1999-2001.

  23. PI: A. Kumar, Co-PI: R. Bahl, "Design of efficient wideband speech encoding and decoding scheme", 1998-1999.

Consultancy and Technology Development Projects

  1. CI: A. Kumar, Co-CI: R. Bahl, I. N. Kar, “Algorithmic framework for MEMS sensor fusion applications – Phase 2”, 2015-16.

  2. CI: A. Kumar, Co-PI: R. Bahl, I. N. Kar, “Development of multi-sensor data fusion and distribution algorithm with implementation in HLL on COTS hardware”, 2014-17.

  3. CI: A. Kumar, Co-PI: R. Bahl, I. N. Kar, “Algorithmic framework for MEMS sensor fusion applications”, 2014-15.

  4. CI: R. Bahl, Co-CI: A. Kumar, M. Agarwal, "Software for underwater domain awareness," Phase 2, 2012.

  5. CI: A. Kumar, Co-CI: I. N. Kar, R. Bahl, "Development, implementation, and performance comparison of estimation methods for bearings-only tracking of non-maneuvering and maneuvering targets," 2012-2013.

  6. CI: A. Kumar, Co-CI: R. Bahl, A. Kumar, "Simulation studies and evaluation of infrasonic based avalanche localization system," 2010-2012.

  7. CI: R. Bahl, Co-CI: A. Kumar, M. Agarwal, "Software for underwater domain awareness," Phase 1, 2011.

  8. CI: A. Kumar, Co-CI: R. Bahl, M. Agarwal, "Development of real-time platform radiated noise simulator software using time-varying underwater channel," 2011.

  9. CI: A. Kumar, Co-CI: R. Bahl, M. Agarwal, "Development of real-time platform radiated noise simulator for classifier testing using unbounded underwater channel," 2010.

  10. CI: A. Kumar, Co-CI: R. Bahl, M. Agarwal, "Development of platform radiated noise library for classifier testing," 2010.

  11. CI: A. Kumar, Co-CI: R. Bahl, M. Agarwal, "GMSK modulation and atmospheric noise suppression for VLF communication," 2010-2011.

  12. CI: R. Bahl, Co-CI: A. Kumar, M. Agarwal, "LDPC codes for VLF communication," 2010-2011.

  13. CI: R. Bahl, Co-CI: A. Kumar, M. Agarwal, "Target classifier using active sonar", 2009-2011.

  14. CI: A. Kumar, "Technical consultancy on speech based recognition systems", 2009.

  15. CI: A. Kumar, Co-CI: R. Bahl, "Flexible pattern recognition for ultrasonic signals - step 2," Japan, 2008-2009.

  16. CI: A. Kumar, Co-CI: R. Bahl, "Flexible pattern recognition for ultrasonic signals - step 1", Japan, 2007-2008.

  17. CI: A. Kumar, Co-CI: R.Bahl, M. Agarwal, "Higher order spectrum analysis tools for underwater acoustic signals," 2007-2008.

  18. CI: A. Kumar, Co-CI: R. Bahl, M. Agarwal, "Identification of coupled machinery frequencies from passive sonar data," 2006-2008.

  19. CI: R. Bahl, Co-CI: A. Kumar, M. Agarwal, "Noise filtering and spectral estimation techniques for passive sonar data", 2006-2008.

  20. CI: A. Kumar, Co-CI: R. Bahl, "Formulating realistic criteria for detection of targets by sonars", 2005-2006.

  21. CI: A. Kumar, Co-CI: S. Prakriya, "Modular course in Digital Signal Processing," 2003.

  22. CI: R. Bahl, Co-CI: A. Kumar, "Training simulation software for naval applications", 2002.

  23. CI: R. Bahl, Co-CI: A. Kumar, "DSP Consultation," 2000.

  24. CI: A. Kumar, Co-CI: R. Bahl, "Robust algorithm design for natural quality low bit rate speech coding", 1998-1999.

  25. CI: A. Kumar, Co-CI: R. Bahl, "Algorithm design of speech encoder and decoder at 3.0-4.0 kbps", 1998.

  26. CI: A. Kumar, Co-CI: R. Bahl, "Design of speech coder", 1998.

  27. CI: A. Kumar, Co-CI: R. Bahl, "Algorithm design and DSP implementation of variable rate speech encoder and decoder at 3.0-4.0 kbps", 1997.

MS by Research Thesis

  1. Jackeun Roh, "Language independent keyword spotting from speech and automatic meta-data insertion," co-supervisor: Aaditeshwar Seth, 2012.

Master's Major Project

  1. Ravish Chugh, MSDF – CPCI Hardware, Time Synchronization and High-Availability Clustering, co-supervisor: R. Bahl, 2016.

  2. Anirudh Rana, Automatic Gain Control and detector Module for Time reversal based underwater link, co-supervisor: M. Agarwal, 2016.

  3. Abhilash Kumar S, Sonar Simulator, co-supervisor: R. Bahl, 2016.

  4. Voice communication performance in underwater communication - MELP based implementation, co-supervisor: M. Agarwal, 2016.

  5. Malkeet Lavana, Conceptualization, Design and Implementation of Turn table for Underwater Tank, co-supervisor: R. Bahl, 2016.

  6. Kavindra Sharma, Position independent motion activity classification using MEMES sensors and spatial environment classification using audio signal, co-supervisor: R. Bahl, 2016.

  7. Parul Bansal, Spatial environment impulse response and digital microphone algorithm, co-supervisor: R. Bahl, 2016.

  8. Jasmeen Patel, Transient human activity recognition for context awareness using MEMS sensors, co-supervisor: R. Bahl, 2016.

  9. Rashmi Gupta, Implementation and performance comparison of estimation methods DIFAR sensors and orientation sensor aided beamforming, co-supervisor: R. Bahl, 2016.

  10. Akankshan Ninawe, FEM modeling of acoustic sensor device and development of acoustic hardware system for multiple target detection and localization, co-supervisors: R. Bahl, Anuj Dhawan, 2016.

  11. Abhishek Satish Chakradeo, Design of collision avoidance algorithm for UAV in indoor environment for autonomous flight, co-supervisor: R. Bahl, 2016.

  12. Sanchit Gupta, COMSOL design and Implementation of Prototype Acoustic Vector Sensor, co-supervisor: M. Agarwal, 2015.

  13. Abhay Narayan, Simulator development for Imaging SONAR, co-supervisor: R. Bahl, 2015.

  14. Sumit Gaur, Implementation of Parametric Model of Speech Compression using MELP STANDARD, co-supervisor: M. Agarwal, 2015.

  15. R. P. Singh, Low Power DSP based Underwater Acoustic Surveillance System, co-supervisor: R. Bahl, 2015.

  16. P. P. Vashisht, SONAR simulator in MATLAB, co-supervisor: M. Agarwal, 2015.

  17. Dhritiman Kashyap, Context Awareness using Audio Signal, co-supervisor: R. Bahl, 2015.

  18. Kashif R. J. Meer, Motion Activity Detection using MEMS Sensor, co-supervisor: R. Bahl, 2015.

  19. Arjun Kalgan, Study, design and implementation of prototype acoustic vector sensor for passive estimation of direction of arrival of radiating acoustic signal, co-supervisor: M. Agarwal, 2014.

  20. Aditya Bhatia, Active sonar classifier, co-supervisor: R. Bahl, 2014.

  21. Hari Om Tyagi, Imaging of tonal sources on a moving platform using instantaneous frequency estimation and passive inverse synthetic aperture technique, co-supervisor: R. Bahl, 2014.

  22. Shaju Unnikrishnan, Development of simulator for imaging sonar, co-supervisor: R. Bahl, 2014.

  23. Ashok Kumar, Implementation of RTOS on multi-channel DSP hardware, co-supervisor: R. Bahl, 2014.

  24. Ch. Ravikumar, Design and development of sound source localization algorithm for meeting room application, co-supervisor: R. Bahl, 2014.

  25. Manish Jain, Experimental study of blind source separation algorithms for acoustic signals, co-supervisor: R. Bahl, 2014.

  26. Arpit Goyal, Hidden Markov Model based text-to-speech synthesis for Hindi.

  27. Akshay Kumar, Emotional speech synthesis, 2013.

  28. K. A. Vikas, Echo modeling and simulator development for imaging sonar, co-supervisor: R. Bahl, 2013.

  29. Joseph Chacko, Development of RTOS and applications on low power acoustic signal processing platform, co-supervisor: R. Bahl, 2013.

  30. Ashish Malik, High speed underwater acoustic communication using MIMO-OFDM technology, co-supervisor: R. Bahl, 2013.

  31. Ashutosh Sharma, Active sonar classifier design and implementation, co-supervisor: R. Bahl, 2013.

  32. Hemant Chauhan, Design and development of compact sonar signal processor- Based on OMAP L138, co-supervisor: R. Bahl, 2013.

  33. Baiju M. Nair, Simulation and optimization of plane waves using Near Field arbitrary placed sensors, co-supervisor: R. Bahl, 2013.

  34. Rohit Aggarwal, Design and Development of Snow Avalanche Detection and Localization System with Field and Laboratory Experiments, co-supervisor: R. Bahl, 2013.

  35. Aditya Malik, Underwater acoustic modem implementation using MIMO-OFDM technology, co-supervisor: R. Bahl, 2012.

  36. Aditya Malik, Underwater acoustic modem implementation using MIMO-OFDM technology, co-supervisor: R. Bahl, 2012.

  37. Sunil Kumar Sharma, Implementation of applications for battery operated sonar on low-power DSP hardware platform, co-supervisor: R. Bahl, 2012.

  38. Anup Singh, Algorithm design and system implementation of underwater acoustic vector sensor, co-supervisor, R. Bahl, 2012.

  39. Akshay Prabhu, Active sonar classifier design and implementation, co-supervisor: R. Bahl, 2012.

  40. Pooja Rathi, Design and development of scaled model of avalanche detection and localization system using infrasonics, R. Bahl, 2012.

  41. Kanike Pratap, Development of underwater sonar applications on OMAP processor, co-supervisor: R. Bahl, 2012.

  42. Ayush Khandelwal, Simulator for imaging sonar, co-supervisor: R. Bahl, 2012.

  43. Pradeep Kumar D., Underwater acoustic communication using OFDM, co-supervisor: R. Bahl, 2012.

  44. Amol Gupta, Magnetic sensor testing for inertial navigation, co-supervisor: Manish Sharma, 2011.

  45. Ritesh Suri, Active sonar classifier - realistic echo formulation and HMM based classifier design, co-supervisor: R. Bahl, 2011.

  46. Manish Kumar, Configuration of DAQ systems for signal processing functions on compact low power DSP hardware, co-supervisor: R. Bahl, 2011.

  47. Ashutosh Sharma, Study of generation of planar wavefront in the near field, co-supervisor: R. Bahl, 2011.

  48. Shekhar Nayak, Text-to-speech synthesis modules for Hindi, co-supervisor: M. Agarwal, 2011.

  49. Mrinal Sinha, Implementation of system controller functions on compact low power multi-DSP hardware platform, co-supervisor: R. Bahl, 2011. Awarded IIT Alumni First Prize in I2 Tech Open House 2011, and FITT Best Industry relevant M.Tech Project 2011.

  50. Anindya Gupta, LDPC codes for VLF communication, co-supervisor: R. Bahl, 2011.

  51. Chandra Shekhar Agan, Underwater acoustic vector sensors, co-supervisor: M. Agarwal, 2011.

  52. Vikram Gupta, Language independent audio search, 2011.

  53. Sukriti Ranjan, Simulation studies on passive array signal, co-supervisor: R. Bahl, 2010.

  54. Kapil Sharma, Realization of underwater acoustic modem, co-supervisor: M. Agarwal, 2010.

  55. Kapil Dev Tyagi, Calibration of underwater sensors and materials, co-supervisor: M. Agarwal, 2011.

  56. Gaurav Sharma, Built-in self test implementation for low power DSP hardware platform, co-supervisor: R. Bahl, 2010.

  57. Hari Parameswaran, Spatial mapping of radiated tonals from moving source using passive inverse synthetic aperture, co-supervisor: R. Bahl, 2010.

  58. Gunjan Pant, Active sonar classifier: realistic echo formulation and HMM based classifier design, co-supervisor: R. Bahl, 2010.

  59. Sahebgowda Patil, Development of interface and driver for external flash memory with TMS320C5510 DSP processor, co-supervisor: R. Bahl, 2010.

  60. Ruchita Gomkale, "Separation of singing voice from music," 2009.

  61. Sharad Bhadula, "Active sonar classifier: Geometric simulation of echo formulation using ray theory," co-supervisor: R. Bahl, 2009.

  62. M. V. Dora, "Realization of low power DSP hardware platform with BIST and development of applications," co-supervisor: R. Bahl, 2009.

  63. Amarendra Kumar, "Passive sonar classification algorithm (Pascal) and dimensionality reduction of feature vector," co-supervisor: M. Agarwal, 2009.

  64. Madhavendra Singh, "Realization of underwater acoustic modem," co-supervisor: M. Agarwal, 2009.

  65. Kartik Audhkhasi, “ Non-intrusive speech quality evaluation using auditory features” 2008,

  66. R. Parthiban, “Active Noise Cancellation” co-supervisor: Prof. R. Bahl, 2008.

  67. Ankita Pal, “Novel UW MODEM design for Mitigation of Dominant Channel Distortions,” co-supervisor: Dr. Monika Aggarwal, 2008.

  68. Ashish Agarwal, “Underwater Acoustic Vector Sensor,” co-supervisor: Prof. R. Bahl, 2008.

  69. Anuj Bhalla, “Realization of High Speed Underwater Modem for Real Time Operations on DSP, ” co-supervisor: Prof. R. Bahl, 2008.

  70. Raghvender Singh, “Hardware Design (Low Power Acoustic Signal Processing Module),” co-supervisor: Prof. R. Bahl, 2008.

  71. Shashank Dubey, “Realization of prototype low power scalable acoustic signal processing module with BIST,” co-supervisor: Prof. R. Bahl, 2007.

  72. Alok Rai, “Study of active sonar intercept data and signal generation for classification application,” co-supervisor: Prof. R. Bahl, 2007.

  73. Santosh Biradar, “Study and implementation of real time QPSK underwater modem,” co-supervisor: Dr. M. Agarwal, 2007.

  74. B. Prabhu, “Active noise cancellation for stealth,” co-supervisor: Prof. R. Bahl, 2007.

  75. Sadeed bin Sayeed, “ Voice individuality representation and conversion“, co-supervisor: Dr. Ashish Verma, IBM-IRL, 2007.

  76. Arshdeep Singh Ahluwalia, “Design and development of classification and data fusion algorithms for radar and sonar applications,” co-supervisor: Prof. R. Bahl, 2006.

  77. Tribhuwan Singh Rawat, “Realization of a sonocular perception system,” co-supervisor: Dr. M. Agarwal, 2006.

  78. V. Kishore, “Simulation of ship radiated noise and classification using neural networks and K-nearest neighbours,” co-supervisor: Prof. R. Bahl, 2006.

  79. Kuldeep Singh, “Realization of high speed underwater modem and sea trials,” co-supervisor: Dr. M. Agarwal, 2006.

  80. Abhishek Singh, “Hybrid detector for ship radiated signal in statistically varying underwater noise,” co-supervisor: Prof. R. Bahl, 2006.

  81. A. Silar Shareef, “Towards the integration of language model in continuous speech recognition,” co-supervisor: Prof. S. Prasad, 2005.

  82. Ajit Pal Singh, “Design of low power acoustic signal processor module with built-in-self test (BIST) facility,” co-supervisor: Prof. R. Bahl, 2005.

  83. A. Puran Kumar, “Realization of a 2400 baud QPSK underwater modem on TMS320VC5510 DSK for real time operation,” co-supervisor: Dr. M. Agarwal, 2005.

  84. Sougata Maitra, “Implementation of interfaces and design of a non-preemptive real time operating system for low power acoustic signal processing module,” co-supervisor: Prof. R. Bahl, 2005.

  85. J. Senthil Rengarajan, “Implementation of sonocular perception system using TMS320VC5510 DSK,” co-supervisor: Prof. R. Bahl, 2005.

  86. Haramrit Pal Kaur, “Design of a digital test-bench facility for underwater acoustics experiments,” co-supervisor: Dr. M. Agarwal, 2005.

  87. C. Rami Reddy, “Study of performance of various detectors for underwater noise environment,” co-supervisor: Dr. M. Agarwal, 2005.

  88. Rahul Kapoor, “Underwater radiated noise synthesis and detection and classification of transients,” co-supervisor: Prof. R. Bahl, 2005.

  89. Pawan Dhingra, “Design of peripheral interface modules for low power acoustic DSP systems,” co-supervisor: Dr. M. Agarwal, 2004.

  90. Rajeev Ranjan, “Design of RTOS for low power multi processor acoustic signal processor module,” co-supervisor: Dr. M. Agarwal, 2004.

  91. Sanjib Chaudhury, “Data modem for underwater channel,” co-supervisor: Dr. M. Agarwal, 2004.

  92. K. Raja, “Study and implementation of underwater signal propagation models,” co-supervisor: Dr. M. Agarwal, 2004.

  93. Budhaditya Banerjee, “Pilot aided channel estimation for MIMO OFDM systems,” co-supervisor: Franziskus Bauer, Nokia, Germany, 2004.

  94. Amit Agarwal, “Development of speaker independent large vocabulary continuous speech recognition system,” co-supervisor: Prof. S. Prasad, 2004.

  95. Manish Kumar, “Comparative study and implementation of pitch estimation algorithms,” co-supervisor: Dr. R. K. P. Bhat, 2004.

  96. Arnab Das, “Design of target classification method for passive surveillance sonar,” 2002.

  97. M. A. K. Shetty, “Development and simulation of network protocol for underwater local area network,” 2002.

  98. Praveen Kumar Roy, “Development of DSP self test modules for low power digital signal processor board,” 2002.

  99. Sanjay Kumar, “Low power acoustic signal processing module – Hardware implementation and design of PC interface for functional evaluation,” 2002.

  100. Narendra D. Mago, “Design and development of a real time embedded,” 2002.

  101. Iftekar Alam, “Design and implementation of a stereophonic sonocular perception system,” 2002.

  102. Smarjit Das, “Low bit rate speech coding using derivative glottal waveform interpolation in residual domain,” co-supervisor: Prof. S. Prasad, 2002.

  103. Shobhit Singh, “Development of phoneme based continuous speech recognition system for medium size vocabulary,” co-supervisor: Prof. S. Prasad, 2002.

  104. Lakshmi Narayana M., “Design and implementation of text to speech synthesis system for Hindi,” 2002.

  105. Rajan Dhiman, “Design of a prototype low power acoustic signal processor module for remote manned/unmanned platforms,” co-supervisor: Prof. R. Bahl, 2001.

  106. Rajesh K. Nair, “Design and simulation of underwater acoustic LAN protocols,” co-supervisor: Prof. R. Bahl, 2001.

  107. Amitabh Pandey, “Studies on passive sonar processing and ocean acoustic propagation modeling,” co-supervisor: Prof. R. Bahl, 2001.

  108. Subhash Yadav, “Study of PC to PC infrared data communication link (IRDA),” co-supervisor: Prof. R. Bahl, 2001.

  109. Harjit S. Chatha, “Simulation of underwater communication system operation in shallow oceanic channel,” co-supervisor: Prof. R. Bahl, 2001.

  110. Sandeep Kumar, “Pitch asynchronous code excited linear all-pole glottal model for natural quality speech synthesis,” 2001.

  111. Manoj Rajput, “Development of phoneme based isolated word speech recognition system for medium size vocabulary,” co-supervisor: Prof. S. Prasad, 2001.

  112. Sandeep Gupta, “Low bit rate speech coding using glottal waveform interpolation,” co-supervisor: Prof. S. Prasad, 2001.

  113. Amit Sharma, "Line spectral frequency quantization of 7 kHz band speech and audio using predictive multi-stage vector quantization", 2000.

  114. Gorav Kumar, "Glottal interpolation waveform modeling for natural quality low bit rate speech coding", 2000, co-supervisor: Prof. S. Prasad.

  115. Dhruv Prakash Tripathi, " Signal detection and beamsteering using microphone array in presence of noise and reverberations", 2000, co-supervisor: Prof. S. Prasad.

  116. Naveen Jain, "Robust speech recognition using discrete and continuous density HMMs", 2000, co-supervisor: Prof. S. Prasad.

  117. Chandra Prakash Gupta, "Low power and low complexity chip implementation of IDEA ciphering block", co-supervisor: Dr. Wolfgang Wilhelm, 2000.

  118. T. Ajit, "Study and proposal of an underwater acoustic local area network", 2000, co-supervisor: Prof. R. Bahl.

  119. M. S. Pental, " Studies on the design of a low power acoustic signal processor module for remote manned/unmanned platform", 2000, co-supervisor: Prof. R. Bahl.

  120. K. Raja, " Ocean acoustic propogation modelling - The ray trace and normal mode methods", 2000, co-supervisor: Prof. R. Bahl.

  121. R. Chatrath, "A task scheduling simulator for multiple DSP board systems", 2000, co-supervisor: Prof. R. Bahl.

  122. A. Saxena, "Study of low probabilty of intercept and robust underwater acoustic communications", 2000, co-supervisor: Prof. R. Bahl.

  123. M. Narula, "System integration using DSP modules as buliding blocks", 1999, co-supervisor: Lt. Cdr. Tanmay Roy.

  124. A. M. Anand, "Simulator for multiprocessor based systems", 1999, co-supervisor: Prof. R. Bahl.

  125. S. N. Singh, "Simulation of underwater acoustic channel and study of Frank polyphase code for receiver synchronization", 1999, co-supervisor: Prof. R. Bahl.

  126. Vivin Vaid, "VHDL based simulation of USART (INTEL 8251A)", 1999, co-supervisor: Prof. R. Bahl.

  127. Ajay Tiwari, "Study and simulation of shallow water sound propogation", 1999, co-supervisor: Prof. R. Bahl.

  128. Dharmendra P. Kanejiya, "Speech recognition in noisy environment", 1999, co:supervisor: Prof. S. Prasad.

  129. Awan Kumar Sharma, "Low bit rate speech coding using prototype waveform interpolation technique in glottal domain", 1999, co-supervisor: Prof. S. Prasad.

  130. Richa Thamman, "Design and implementation of adaptive microphone array for teleconferencing environment", 1999, co-supervisor: Prof. S. Prasad.

  131. K. Seshagiri, "Design of microphone array for speech enhancement in videoconferencing applications", 1999, co-supervisor: Prof. S. Prasad.

  132. Priya Rastogi, "Speech enhancement using microphone array based algorithms for videoconferencing", 1998, co-supervisor: Prof. S. Prasad.

  133. T.V.N.R. Prabhu, "Natural quality low bit rate speech coder using waveform interpolation", 1998, co-supervisor: Prof. S. Prasad.

  134. R. M. Pujari, "Experimental study of spectral coding of wideband speech using LPC and LSF techniques", 1998.

  135. S. K. Mishra, "Implementation and study of transform coding based wideband speech codec at 16-32 kbps", 1998.

  136. S. Subramanian, "Study and simulation of underwater networking", 1998, co-supervisor by Prof. R. Bahl.

  137. R. K. Goswami, "Simulation and design of autonomous passive sonar", 1998, co-supervisor: Prof. R. Bahl.

  138. Ashish Pathak, "Simulation study and DSP implementation of digital radio receiver", 1998, co:supervisor: Prof. R. Bahl.

  139. Kapil Soni, "An experimental study of ITU-T speech coding standard G.723.1 at 5.3 kbps", 1997, co-supervisor: Prof. S. Prasad.

  140. Rajesh Sharma, "Channel simulation and detection of underwater targets", 1997, co-supervisor: Prof. R. Bahl.

  141. A. Suresh, "Towards natural quality speech coding using prototype waveform interpolation", 1997, co-supervisor: Prof. S. Prasad.

Undergraduate Projects

  1. Mayank Kumar and Sankalp Dayal, Personal navigation system using inertial navigation sensors and GPS, co-supervisor: Manish Sharma, 2010 (Awarded Best B.Tech Project of EE Department).
  2. Chinmay Agarwal, "Sensor fusion and wearable computing", co-supervisor: K. Paul, 2009.

  3. Daya Shanker Khudia and Rajat Agarwal, “Voice personality representation and transformation,” 2007, co-supervisor: Dr. Ashish Verma, IBM-IRL.(awarded Best B.Tech project of EE Department).

  4. Ashutosh Nayyar, “Language identification from speech,” co-supervisor: Prof. S. Prasad, 2006.

  5. Kunal Lal, “Keyword spotting from continuous speech,” co-supervisor: Prof. S. Prasad, 2006.

  6. Saurabh Rustagi, “Pattern classification based on class specific methods,” co-supervisor: Prof. R. Bahl, 2005. (mini-project)

  7. Anshul Jain, “Multimedia stream summarization,” co-supervisor: Prof. S. Chaudhury, 2005. (mini-project).

  8. Manav, “A very low bit rate speech coder using recognition / synthesis paradigm,” co-supervisor: Ashish Verma, 2004. (awarded Best B.Tech Project of EE Department).

  9. B. Srinath Reddy and Abhishek Pal, “Video classification using audio and video cues,” co-supervisor: Prof. M. Hanumandlu, 2004.

  10. S. Kalyan Krishna and Raghav Subbarao, “Video characterization using visual and aural information,” co-supervisor: Prof. S. Chaudhury, 2003.

  11. Gaurav Mehta and Sumanta Bhowmik, “Design and implementation of a sonocular perception system,” co-supervisor: Prof. R. Bahl, 2002.

  12. Abhishek Dixit and Mohit Chauhan, “Design and comparative study of prosodic feature models for unrestricted text-to-speech synthesis in Hindi”, 2001.

  13. Naveen Singla and Manish Nehra, "Study of digital audio coding techniques", co-supervisor: Prof. S. Prasad, 2000.

  14. Abhinav Roongta and Saurabh Sood, “Content based audio retrieval,” co-supervisor: Prof. S. Chaudhury, 2000. (mini-project).

  15. Anuj Sharma and Nitin Kumar, "Design and implementation of speech synthesis and prosodic analysis modules for a text-to-speech system for Hindi", 2000.

  16. Manish Singla and Himanshu Sharma, "Design and synthesis of text and prosodic analysis module for Hindi text-to-speech synthesis", 2000.

  17. Nitin Gupta, "Design of split vector quantizer for line spectral frequencies in mediumband audio", 1999, (mini-project).

  18. Lokesh Setia and Akash Ratie, "Design and implementation of robust wideband speech codec at 16-32 kbps using analysis-synthesis", 1999.

  19. Vaibhav Mathur and Abhinav Sethy, "Design and implementation of wideband speech codec at 16-32 kbps using transform predictive coding", 1999, co-supervisor: Prof. R. Bahl. (awarded Best B.Tech Project of EE Department).

  20. Maneesh Soni and Pradeep Kumar, "Add-on card for enhancing the features of an ordinary telephone", 1998, co-supervisor: Prof. S. Prasad.

  21. Hemant Kumar, "Design of vector quantization algorithms", 1998, (mini-project).

  22. Lokesh Setia and Alok Gupta, "Study of MPEG-4 voice music classifier and design of robust voiced-unvoiced speech classifier", 1997, (mini-project).

Completed

  1. Kapil Dev Tyagi, “Investigation of signal processing techniques for acoustic reflectometry,” supervisors: Arun Kumar, R. Bahl, 2016.

  2. Hemlata Chowdhary, “Inter-sensor time delay estimation for passive acoustic localization,” supervisors: Arun Kumar, R. Bahl, 2014.

  3. Rinki Gupta, “Estimation of instantaneous frequency and its applications,” supervisors: Arun Kumar, R. Bahl, 2013.

  4. Rajesh Kumar Dubey, “Non-intrusive objective speech quality assessment using features at single and multiple time scales,” supervisor: Arun Kumar, 2013.

  5. S. S. Lokesh, "Pre-coding techniques for communication systems," supervisors: Arun Kumar, M. Agarwal, 2011.

  6. Arnab Das, "Classification of marine vessels using passive sonar," supervisors: Arun Kumar, R. Bahl, 2009.

  7. Abhijit Karmarkar, "A multi-resolution auditory model and its application to objective evaluation of subjective speech quality," supervisors: Arun Kumar, R. K. Patney, 2007.

  8. Ashish Verma, "Voice fonts framework for individuality representation and transformation", supervisors: Arun Kumar, 2006.

  9. Tanmay Roy, "Bispectrum phase based extraction of target parameters using passive sonar," supervisors: Arun Kumar, R. Bahl, 2004.

Thesis Submitted

  1. Ashish Agarwal, “Multiple source localization with single acoustic vector sensor,” supervisors: Arun Kumar, M. Agarwal, 2015.

In Progress

  1. Abhimanyu Popli, "Keyword spotting in speech," supervisor: Arun Kumar.

  2. Rajani Akula, "Infrasonics based detection and localization of snow avalanches," supervisors: Arun Kumar and M. Agarwal.

  3. Mohd. Wajid, "Acoustic signal processing for detection and localization of objects and events," Supervisors: Arun Kumar, R. Bahl.

  4. Arun Goel, “Acoustic imaging”, supervisors: Arun Kumar, R. Bahl.

  5. Bipin Patel, “Design and implementation of acoustic vector sensors for air applications,” supervisors: Arun Kumar, R. Bahl.

  6. Manish Jain, “Active noise cancellation,” supervisors: Arun Kumar, R. Bahl.

  7. Sunil Kumar Sinha, “Acoustics based localization of UAVs,” supervisors: Arun Kumar, R. Bahl.

  8. Baiju M. Nair, “Passive sonar based direction of arrival estimation,” supervisors: Arun Kumar, R. Bahl.

  9. Arjun Kalgan, “Underwater target localization and motion analysis using passive sonar,” supervisors: Arun Kumar, R. Bahl.

  10. Nitesh Sahu, “Multi-sensor data fusion for navigation applications,” supervisors: Arun Kumar, R. Bahl.

Patents

  1. Mahesh Chowdhary, Arun Kumar, Manish Sharma, Ashutosh Pande, Mahaveer Jain, Gagan Narula, Chimnay Agarwal, and Kolin Paul, “Methods and applications for altitude measurement and fusion of user context detection with elevation motion for personal navigation systems,” US Patent No. US 8,566,032 B2, Date of Patent Publication: 22 Oct. 2013.

  2. Mahesh Chowdhary, Arun Kumar, Manish Sharma, Kolin Paul, Mahaveer Jain, Gagan Narula, “Methods and applications for motion mode detection for personal navigation systems,” US Patent No. US 9,163,946 B2, Date of Patent Publication: 20 Oct. 2015.

  3. Mahesh Chowdhary, Manish Sharma, Arun Kumar, Anuraag Gupta, Prateek Agrawal, “Hierarchical context detection method to determine location of a mobile device on a person’s body,” US Patent Application No. US 2012/0303271 A1, Date of Patent Application Publication: 29th Nov. 2012.

  4. Mahesh Chowdhary, Manish Sharma, Arun Kumar, Sankalp Dayal, Mahaveer Jain, “Method and apparatus for determining walking direction for a pedestrian dead reckoning process,” US Patent Application No. US 2013/682,684, Date of Patent Application Publication: 22nd May 2014.

  5. Mahesh Chowdhary, Arun Kumar, Ghanapriya Singh, Indra Narayan Kar, Rajendar Bahl, “Method and apparatus for determining probabilistic context awareness of a mobile device using a single sensor and/or multi-sensor data fusion,” US Patent Application No. US 15/074188, Date of Patent Application Publication: 1st September 2016.

Journals and Book Chapters

  1. Mohd. Wajid, Arun Kumar and Rajendar Bahl, “Design and study of air acoustic vector sensor configurations for two dimensional geometry,” The Journal of Acoustical Society of America, vol. 139 (5), pp. 2815-2832, 2016.

  2. Rajani Akula, Arun Kumar and Monika Agrawal, “Localization of snow avalanches from infrasound signatures using an acoustic vector sensor,” IUP Journal of Electrical and Electronics Engineering, vol. 9, no. 2, pp. 42-52, 2016.

  3. Mohd. Wajid, Arun Kumar and Rajendar Bahl, “Bearing estimation in a noisy and reverberant environment using an air acoustic vector sensor,” IUP Journal of Electrical and Electronics Engineering, vol. 9, no. 2, pp. 53-63, 2016.

  4. Rajesh Kumar Dubey and Arun Kumar, “Non-Intrusive Speech Quality Assessment using Multi-Resolution Auditory Model Features for Degraded Narrowband Speech,” IET Signal Processing, vol. 9, issue 9, 2015.

  5. Arjun Kalgan, Rajendar Bahl, Arun Kumar, “Design and implementation of prototype Underwater Acoustic Vector Sensor for passive estimation of Direction of Arrival of radiating acoustic signal,” Indian Journal of Geo-Marine Sciences, pp. 519-525, 2015.

  6. Kapil Dev Tyagi, Arun Kumar, Rajendar Bahl, Karamjeet Singh, “Field experiments and simulations to determine acoustic attenuation constant in snow,” under review for journal publication.

  7. Arun Kumar and Rajendar Bahl, “An architecture for high data rate very low frequency communication,” Defence Science Journal, vol. 63, no. 1, pp. 25-33, Jan 2013.

  8. H. Choudhary, R. Bahl, A. Kumar, “Passive acoustic localization using blind Gauss Markov estimate with spectral estimation at each sensor,” IET Radar,Sonar, and Navigation, vol. 7, issue 7, pp. 800-807, 2013.

  9. Rajesh Dubey and Arun Kumar, "Non-intrusive speech quality assessment using several combinations of auditory features," Intl. Journal of Speech Technology, Springer, vol. 16, issue 1, pp. 89-101, March 2013.

  10. Arnab Das, Arun Kumar, R. Bahl, "Marine vessel classification based on passive sonar data: The cepstrum based approach," IET Signal Processing, pp. 1-7, July 2012.

  11. Rinki Gupta, Arun Kumar and R. Bahl, "Estimation of instantaneous frequencies using empirical mode decomposition," Signal, Image, and Video Processing, vol. 6, no. 1, pp. 1-14, March 2012.

  12. Abhijit Karmakar, Arun Kumar, and R. K. Patney, "Synthesis of an optimal wavelet based on auditory perception criterion," EURASIP Journal on Advances in Signal Processing, vol. 2011, Article ID 170927, 2011.

  13. Arnab Das, Arun Kumar and R. Bahl, "Radiated signal characteristics of marine vessels in the cepstral domain for shallow underwater channel," Journal of Acoustical Society of America Express Letters, vol. 128, No. 4, EL151 - 156, Oct. 2010.

  14. Kartik Audhkhasi and Arun Kumar, "Two scale auditory feature based non-intrusive speech quality evaluation," IETE Journal of Research, vol. 56, Issue 2, pp. 111-118, 2010.

  15. S. S. Lokesh, A. Kumar and M. Agarwal, "Structure of an optimum linear precoder and its application to ML equalizer," IEEE Transactions on Signal Processing, vol. 56, issue 8, pp. 3690 - 3701, Aug 2008.

  16. Abhijit Karmakar, Arun Kumar and R. K. Patney, "Design of an optimal two-channel orthogonal cyclic filter-bank using semi-definite programming," IEEE Journal of Selected Topics in Signal Processing, Special Issue on Convex Optimization Methods for Signal Processing, vol. 1, issue 4, pp. 633-640, Dec 2007.

  17. Abhijit Karmakar, Arun Kumar and R. K. Patney, "Design of an optimal two-channel orthogonal cyclic filter bank using semi-definite programming", IEEE Signal Processing Letters, vol. 14, no. 10, pp. 692-694,Oct. 2007.

  18. Abhijit Karmakar, Arun Kumar and R. K. Patney,"Design of optimal wavelet packet trees based on auditory perception criterion", IEEE Signal Processing Letters, vol. 14, no. 4, pp. 240-243,April 2007.

  19. Arnab Das, Arun Kumar and Rajendar Bahl,"Design of a comprehensive underwater target classifier for passive SONAR", Journal of Ship Technology., Vol.3,no 1,pp.20-30,Jan. 2007.

  20. Abhijit Karmakar, Arun Kumar and R. K. Patney, "A multiresolution model of auditory excitation pattern and its application to objective evaluation of perceived speech quality", IEEE Trans. on Audio, Speech and Language Process., Vol.14,no 6,pp.1912-1923,Nov. 2006.

  21. S. Kalyan Krishna, R. Subbarao, S. Chaudhuri, A. Kumar, "Parsing news video using integrated audio-video features", in Pattern Recognition and Machine Intelligence, Lecture Notes in Computer Science, Springer Verlag, vol. 3776, pp. 538-543, Dec. 2005.

  22. A.Verma and A. Kumar,"Voice fonts for individuality representation and transformation", ACM Transactions on Speech and Language Processing, Vol. 2, No. 1, pp. 1-19, Feb. 2005.

  23. A. Verma and A. Kumar, "Modification of harmonic peak-to-valley ratio for controlling roughness in voice conversion", IEE Electronics Letters, pp. 1613-1615, vol. 40, no. 25, Dec. 2004.

  24. A. Kumar and A. Gersho, "LD-CELP speech coding with nonlinear prediction", IEEE Signal Processing Letters, vol. 4, no. 4, pp.89-91, 1997.

  25. A.Kumar and S.K.Mullick, "Nonlinear time series analysis", in Modeling of Complex Systems, eds. J. K. Bhattacharjee and A. K. Mallik, Narosa, Delhi, pp. 201-240, 1997.

  26. A. Kumar and S. K. Mullick, "Nonlinear dynamical analysis of speech," Journal of Acoustical Society of America, Vol. 100, No. 1,pp. 615-629, 1996.

  27. S. K. Mullick, Arun Kumar and Parag Jain, "Modified Berlekamp Massey algorithm and modelling of discrete time signals", Sadhana-Signal Processing Special Issue, vol. 16, part 3, pp. 241-250, 1991.

  28. A. Kumar and S. K. Mullick, "Attractor dimension, entropy and modeling of speech time series", IEE Electronics Letters, vol. 26, no. 21, pp. 1790 - 1792, 1990.

Conferences

  1. Mohd Wajid, Arun Kumar and R. Bahl, “Air acoustic vector sensor for direction-finding in a reverberant environment using finite element method,” National Symposium on Acoustics, Goa, pp. 1-5, 7-9 Oct. 2015.

  2. Kapil Dev Tyagi, Arun Kumar and R. Bahl, “Synthesis of test signal for acoustic reflectometry,” National Symposium on Acoustics, Goa, pp. 1-5, 7-9 Oct. 2015.

  3. Abhimanyu Popli and Arun Kumar, “Query-by-Example Spoken Term Detection using low dimensional posteriorgrams motivated by articulatory classes,” IEEE 17th Intl. Workshop on Multimedia Signal Processing (MMSP), Xiamen, China, 19-21 Oct. 2015.

  4. Ashish Agarwal, Arun Kumar, Monika Agarwal, “Iterative adaptive approach to DOA estimation with acoustic vector sensors,” Proc. IEEE Oceans Conference, Genova, Italy, pp. 1-8, May 2015.

  5. Ashish Agarwal, Arun Kumar, Monika Agarwal, “Cumulants based processing of acoustic vector sensor data,” Proc. 2015 IEEE Intl. Symposium on Underwater Technology, Chennai, pp. 1-7, Feb. 2015.

  6. Arjun Kalgan, Rajendar Bahl, Arun Kumar, “Source range and direction of arrival estimation using accelerometer based implementation of prototype acoustic vector sensor,” Proc. 2015 IEEE Intl. Symposium on Underwater Technology, Chennai, pp. 1-7, Feb. 2015.

  7. Hemlata Choudhary, Rajendar Bahl, Arun Kumar, “Inter-sensor time delay estimation using cepstrum of sum and difference signals in underwater multipath environment,” Proc. 2015 IEEE Intl. Symposium on Underwater Technology, Chennai, pp. 1-7, Feb. 2015.

  8. Rajesh Kumar Dubey and Arun Kumar, “Comparison of subjective and objective speech quality assessment for different degradation / noise conditions,” Proc. Intl. Conf. on Signal Processing and Communications, Noida, pp. 261-266, 2015.

  9. Kapil Dev Tyagi, Arun Kumar, Rajendar Bahl, “Snow water equivalent determination technique using narrow acoustic beam,” Proc. Intl. Conf. on Signal Processing and Communications, Noida, pp. 222-226, 2015.

  10. Hari Om Tyagi, R. Bahl, Arun Kumar, “Imaging of tonal sources on a moving platform using instantaneous frequency estimation and passive inverse synthetic aperture technique,” Proc. IEEE Oceans 2014 Conference, St. John’s, Canada, Sept. 2014.

  11. Rajesh K. Dubey and Arun Kumar, “Non-intrusive Objective Speech Quality Assessment using a Combination of MFCC, PLP and LSF Features,” Proc. Intl. Conference on Signal Processing and Communication, Noida, pp. 297-303, Dec. 2013.

  12. Rajesh K. Dubey and Arun Kumar, “Non-intrusive objective speech quality evaluation using features at multiple time scales,” Proc. Indo-French Acoustics Conference – 2013, New Delhi, Nov. 2013.

  13. Kapil Dev Tyagi, R. Bahl and Arun Kumar, “An overview of methods for snow stratigraphy,” Proc. Intl. Conference on Signal Processing and Communication, Noida, pp. 230-235, Dec. 2013

  14. Rajani Akula, Arun Kumar, M. Agarwal, “A signal processing framework for the infrasound signature generated by snow avalanches,” Proc. Indo-French Acoustics Conference – 2013, New Delhi, Nov. 2013.

  15. Baiju M. Nair, Arun Kumar, R. Bahl, “Method for optimization of plane waves in the near field,” Proc. IEEE Intl. Symposium on Ocean Electronics - SYMPOL 2013, Kochi, pp. 146-155, Nov. 2013.

  16. A. Kumar, R. Bahl, R. Gupta, H. Choudhary, “Performance enhancement of GMSK and LDPC based VLF communication in the presence of atmospheric noise,” Proc. National Conf. on Communications, New Delhi, Feb. 2013.

  17. H. Choudhary, R. Bahl, A. Kumar, "Passive acoustic localization using blind-Gauss Markov estimate with spectral estimation at each sensor," Proc. Intl. Symposium Underwater Technology 2013, Tokyo, March 2013.

  18. H. Parameswaran, R. Bahl, A. Kumar, R. Gupta, "Cross-range imaging of a cooperative source using passive inverse synthetic aperture technique," Proc. Intl. Symposium Underwater Technology 2013, Tokyo, March 2013.

  19. R. Gupta, A. Kumar, R. Bahl, "Motion parameter estimation of a radiating point source with multiple tonals using acoustic Doppler analysis," Proc. Intl. Symposium Underwater Technology 2013, Tokyo, March 2013.

  20. H. Choudhary, R. Bahl, and A. Kumar, "Passive acoustic localization using blind Gauss-Markov estimate for the time delay vector," Proc. Intl. Symposium on Ocean Electronics, Kochi, India, Nov. 2011, pp. 56-62.

  21. A. Das, A. Kumar and R. Bahl, "Realistic ambient noise analysis for passive surveillance algorithm design," Proc. Intl. Symposium on Underwater Technology 2011, Presented at IEEE Oceans 2011, Kona, USA, Sept. 2011, pp. 1-8.

  22. V. Gupta, J. Ajmeria, A. Kumar, A. Verma, "A language independent approach to audio search," Proc. Interspeech-2011, Florence, Italy, Aug. 2011, pp. 1125-1128.

  23. Ashish Agarwal, Arun Kumar, Monika Agarwal and R. Bahl,"Design and experimentation with acoustic vector sensors," Proc. Intl. Symposium on Ocean Electronics, Kochi, Nov. 2009.

  24. Arnab Das, Arun Kumar and Rajender Bahl,"Improved estimation of machinery tonal intensity under severe underwater channel distortions," Proc. Intl. Symposium on Ocean Electronics, Kochi, Nov. 2009.

  25. M. Chowdhary, M. Chansarkar, M. Sharma, A. Kumar, K. Paul,M. Jain, C. Agarwal and G. Narula, "Reliable context detection for improving positioning performance and enhancing user experience," Institute of Navigation Global Navigation Satellite System (GNSS) 2009 Conference, Savannah, USA, Sept. 2009.

  26. Lokesh S. S., Monika Agrawal and Arun Kumar, "Time reversal techniques for SNR improvement", Proc. National Conference on Communication, Guwahati, pp. 94-98, Jan 2009.

  27. S. S. Lokesh, M. Agarwal and A. Kumar, "Structure of the optimum input signal matrix for minimum BER maximum likelihood receiver" The 10th Intl. Symposium on Wireless Personal Communications, Jaipur, Dec. 2007.

  28. S. Biradar, M. Agarwal, A. Kumar and R. Bahl, "Design of data packet for time delay and Doppler estimation for underwater acoustic communication",Intl. Symposium on Ocean Electronics (SYMPOL - 2007), Kochi, Dec. 2007.

  29. Arnab Das, Arun Kumar, Rajendar Bahl, "Comprehensive Ocean Area Surveillance Technology (COAST)" Proc. of Seminar on Offshore Security,Mumbai, pp. 22-24, June 2006.

  30. Abhishek Singh, Arun Kumar and Rajendar Bahl, "Hybrid detector for ship radiated signal in statistically varying underwater noise",Proc. IEEE Intl. Conf. on Oceanic Engineering, (Oceans Asia - Pacific 2006), Singapore, May 2006.

  31. Arnab Das, Arun Kumar and Rajendar Bahl, "Performance analysis due to feature transformation for automated marine vessel recognition in cepstral domain",Proc. INDICON, New Delhi, 2006.

  32. Manav, Arun Kumar and Ashish Verma, "A very low bit rate speech coder using recognition-synthesis paradigm and pitch-asynchronous HNM", Proc. National Conf. on Communications (NCC-2006), New Delhi, pp. 185-189, 2006.

  33. CHR Reddy, Abhishek Singh, Arun Kumar, Monika Aggarwal and Rajendar Bahl,"Robust Detection of Ship Radiated Signal using a Novel Hybrid Detector",Proc. National Symposium on Ocean Electronics, (SYMPOL 2005), Kochi, pp. 152-160, Dec 2005.

  34. Arnab Das, Arun Kumar, Rajendar Bahl, "Classification Feature Analyses in Time Varying Channel for Passive Sonar",Proc. of the National Symposium on Ocean Electronics, (SYMPOL 2005), Kochi, pp. 161-169, Dec 2005.

  35. A.Das, a. Kumar and R. Bahl, "Study of feature discrimination effects due to time varying channel for passive sonar",Proc. IEEE Intl. Conf. on Oceanic Engineering (OCEANS 2005), Washington DC, pp.1-8, 2005.

  36. T. Roy, A. Kumar and R. Bahl, "Estimation of a coupling feature for target classification using passive sonar",Proc. IEEE Intl. Conf. on Oceanic Engineering, (OCEANS 2005), Washington DC, vol. 1, pp.148-153, 2005.

  37. Tanmay Roy, Arun Kumar and R. Bahl, "Experimental results of target parameter estimation using bispectrum phase",Proc. Intl. Conf. on Undersea Defense Technology (UDT), Amsterdam, Netherlands, June 2005.

  38. Arnab Das, Arun Kumar and R. Bahl,"Feature analyses for marine vessel classification using passive sonar",Proc. Intl. Conf. on Undersea Defense Technology (UDT), Amsterdam, Netherlands,June 2005.

  39. Ashish Verma and Arun Kumar,"Introducing roughness in individuality transformation through jitter modeling and modification", Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal Process.(ICASSP), pp. I-5 - I-8, Philadelphia, USA, March 2005.

  40. D. Kanejiya, A. Kumar, S. Prasad, "Statistical language modeling with performance benchmarks using various levels of syntactic-semantic information",Proc. 20th Intl. Conf. on Computational Linguistics,(COLING-2004), Geneva, Switzerland, Aug. 2004.

  41. A. Verma and A. Kumar, "Articulatory class based spectral enveloperepresentation for voice fonts",Proc. IEEE Intl. Conf. on Multimedia and Expo, Taipei, Taiwan, pp. 1647-1650, June 2004.

  42. Ashish Verma and Arun Kumar,"Modeling speaking rate for voice fonts",Proc. Eurospeech Conference, Geneva, Switzerland, pp. 2917-2920, 2003.

  43. D. Kanejiya, Arun Kumar, S. Prasad, "Automatic evaluation of students" answers using syntactically enhanced LSA",Proc. Workshop on Building Educational Applications with NLP, Edmonton, Canada, June 2003.

  44. Tanmay Roy, Arun Kumar and R. Bahl, "Passive range estimation using non-linear coupling characteristics",Proc. Intl. Conf. on Undersea Defense Technology, Sweden, June 2003.

  45. Arun Kumar and Ashish Verma, "Using phone and diphone based acoustic models for voice conversion: A step towards creating voice fonts",Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Hong Kong, April 2003.

  46. D. Kanejiya, Arun Kumar and S. Prasad, "Statistical language modeling using syntactically enhanced LSA",Proc. Workshop on Spoken Language Processing, TIFR, Mumbai, pp. 93-100, Jan. 2003.

  47. D. Kanejiya, Arun Kumar and S. Prasad, "Statistical language modeling using latent syntactic-semantic analysis",Proc. ICONS,Mumbai, Dec. 2002.

  48. H. S. Chatha, A. Kumar and R. Bahl, "Simulation studies of underwater communication system, with error control coding and low probability of intercept features, in shallow oceanic channel",Proc. Intl. Conf. on Sonar - Sensors and Systems, Kochi, pp. 463-472, Dec.2002.

  49. R. Dhiman, A. Kumar and R. Bahl, "Design of low power multi-DSP module for acoustic signal processing on remote platforms",Proc. Intl. Conf. on Sonar - Sensors and Systems, Kochi, pp.361-370, Dec. 2002.

  50. R. K. Goswami, A. Kumar and R. Bahl, "Performance of a bispectrum based detector of quadratic phase coupled signals",Proc. Intl. Conf.on Sonar - Sensors and Systems, Kochi, 343-350, Dec. 2002.

  51. M. A. K. Shetty, R. K. Nair, A. Kumar and R. Bahl, "Networking protocols for underwater local area networks",Proc. Intl. Conf. on Sonar - Sensors and Systems, Kochi, 445-452, Dec. 2002.

  52. T. Roy, A. Kumar and R. Bahl,"A novel range estimation method for passive sonars",Proc. Intl. Conf. on Sonar - Sensors and Systems, Kochi, pp. 253-260, Dec. 2002.

  53. T. Roy, A. Kumar and R. Bahl,"Estimation of a non-linear coupling feature for underwater target classification in shallow water",Proc.Intl. Conf. on Sonar - Sensors and Systems, Kochi, pp. 305-312, Dec. 2002.

  54. T. Roy, A. Kumar and R. Bahl,"Detection of quadratic phase coupling in shallow underwater channel",Proc. IEEE Intl. Conf. on Oceanic Engineering (OCEANS-2002), Biloxi, U.S.A., Oct. 2002.

  55. H. S. Chatha, A. Kumar and R. Bahl, "Simulation studies of underwater communication system in shallow oceanic channel," Proc. IEEE Intl. Conf. on Oceanic Engineering (OCEANS-2002), Biloxi, U.S.A., Oct. 2002.

  56. Arun Kumar, Sandeep Kumar and I. N. Kar, "Voiced speech synthesis using pitch asynchronous code excited linear filters for the glottal source",Proc. General Assembly of Intl. Union of Radio Science (URSI), Maastricht, the Netherlands, August 2002.

  57. Tanmay Roy, Arun Kumar and R. Bahl, "Estimation of a non-linear coupling feature for underwater target classification",Proc. Intl. Conference on Undersea Defense Technology, La Spezia, Italy, June 2002.

  58. Tanmay Roy, Arun Kumar and R. Bahl, "Characterization of ship radiated signal using higher order spectrum analysis",Proc. National Symposium on Ocean Electronics, Kochi, Dec. 2001.

  59. Tanmay Roy, Arun Kumar and R. Bahl,"A new method for estimating the degree of quadratic phase coupling", Intl. Conf. on Undersea Defense Technology, Hawaii, USA, Nov. 2001.

  60. Arun Kumar, "Low complexity ACELP coding of 7 kHz speech and audio at 16 kbps", Proc. IEEE Intl. Conf. on Personal Wireless Communications, Hyderabad, Dec. 2000.

  61. A. Roongta, S. Sood, S. Chaudhury and A. Kumar, "Content based retrieval in a repository of Indian classical music", Proc. Intl. Conf. on Communications, Computers and Devices, Kharagpur, Dec. 2000.

  62. Tanmay Roy, Arun Kumar and R. Bahl, "Acoustic simulator for ship noise propogation in underwater multipath channel", Matlab Millenium Conference, Bangalore, Nov. 2000.

  63. V. Mathur, A. Sethy and A. Kumar, "Transform coded excitation and linear prediction (TCELP) coding of 7 kHz audio at 16-32 kbps",Proc. Sixth National Conf. on Communications, Delhi, pp. 234-238, Jan. 2000.

  64. A. Kumar, "Directions in low bit rate speech coding", Proc. Symposium on Applications of Signal Processing, Institution of Engineers, India, Oct. 1998.

  65. A. Kumar, P. Joshi, M. K. Singhal, and Sangeetha, "The SAS-MBE-LPC: A low bit rate speech encoder and decoder", Proc. National Conference on Communications, Bangalore, Jan. 1998.

  66. A. Kumar and A. Gersho, "Voiced speech synthesis with a nonlinear glottal model", Proc. IEEE Intl. Workshop on Speech Coding, Pennsylvania, U.S.A., Sept. 1997.

  67. E. Erzin, A.Kumar and A.Gersho, "Natural quality variable rate spectral speech coding below 3.0 kbps", Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal Processing, Munich, Germany, pp.1579-1582, Apr. 1997.

  68. Arun Kumar and S. K. Mullick,"Computation of a lower bound of the rate distortion function for stationary ergodic sources with memory", Proc. National Conference on Communications, Bombay, India, 1996.

  69. Arun Kumar and S. K. Mullick,"A case for nonlinear modelling of speech signals",Proc. Workshop on Signal Processing and Communications, Bangalore, Tata McGraw Hill, pp. 29-34, 1993.

  70. Arun Kumar and S. K. Mullick,"Speech signal modellinga la chaos,Proc. 1990 IEEE Digital Signal Processing Workshop, New Paltz, N.Y., U.S.A., 1990.

  71. Arun Kumar and S. K. Mullick,"Application of deterministic chaos to signal modeling",Proc. Workshop on Signal Processing, Communications and Networking, Bangalore, McGraw Hill, pp. 21-30, 1990.

  72. S. K. Mullick and Arun Kumar,"A nonlinear prediction scheme based on the L2 norm",Proc. National Conf. on Electronic Circuits and Systems, Roorkee, McGraw Hill, pp.6-9, 1989.

  73. S. K. Mullick, Parag Jain and Arun Kumar, "Partial realization, Berlekamp Massey algorithm and modelling of discrete time signals", Proc. 1988 IEEE Digital Signal Processing Workshop, South Lake Tahoe, U.S.A., 1988.