Areas of Current Research Interest:

• Digital Signal/Speech Processing
• Speech and Audio Forensics
• Computational Non Linear Dynamics
• Data Science and Machine Learning
• Astronomical image processing

Contributions to Teaching:

• Assistant professor at Department of Physics Govt. College Madappally
• Adjunct faculty at Dept. of Computer Science ,University of Mumbai.
• State Project Coordinator ICT Content Development  Project - IT at school Govt. of Kerala.
• Developed ICT Content for  selected topics in Science and Mathematics.
• Conducted training program for science teachers
• Kerala State Core Research Group Member for revising science curriculum.
• Author for Physics text books 8th ,9th classes Govt. of Kerala
• Published books - Mechanics , Analog and Digital Electronics
• Best  Poster award Kerala Science Congress 2014

• CREATION OF STANDARD AUDIO SPEECH DATABASE   IN  MALAYALAM FOR THE DEVELOPMENT OF VOICE  INTERACTIVE MACHINE
  
  Type: Minor Research Project(2018-19)
  
  Major Objectives of the project :
  Frame work for Audio Visual Speech data base creation in Malayalam
  
  Funding Agency : IQAC Kannur University

• INVESTIGATIONS ON NON LINEARITY AND CHAOTIC BEHAVIOR OF SPEECH PRODUCTION SYSTEM FOR SPEAKER MODELING AND RECOGNITION
  
  Type: Minor Research Project
  
  Major Objectives of the project :
  1. Non Linear Modeling of Vocal Tract
  2. Non Linear Feature extraction
  3. Speaker recognition using Non Linear Methods
  4. Speech data base creation in Malayalam

Funding Agency :University Grand Commission (UGC), Govt. of India  

Papers in Journal:

• R K Sunil Kumar, K M Muraleedharan, Vivek P, Lajish V L. “Study of nonlinear properties of vocal tract and its effectiveness in speaker modelling”, Journal of Acoustical Society of India: Vol 43, no. 2 (2016): 116-124.
• Sunil Kumar R.K. and Lajish V.L. “Vowel Phoneme Recognition Based on Average Energy Information in the Zerocrossing Intervals and its distribution Using ANN”, International Journal of Information Sciences and Techniques (IJIST), ISSN: 2249-1139, Vol.2, No.6, November 2012.
• Lajish V L, Sunil Kumar R K, Vivek P. “Speaker Identification using a Nonlinear Speech model and ANN.”  International Journal of Advanced Information Technology (IJAIT), Vol. 2, No.5, October 2012, DOI: 10.5121/ijait.2012.2502.
• Sunil Kumar R.KandLajish.V.L, “Phoneme Recognition using Zerocrossing Interval Distribution of Speech Patterns and ANN”, International Journal of Speech Technology (IJST),ISSN: 1572-8110, vol. 15(4), Springer,July 2012
• Muraleedharan, K. M., Sunil Kumar, R.K., Bibish Kumar, K. T., Sunil John. (2019). "Analysis of Time Delay and Embedding Dimension of Reconstructed Phase Space of Human Vocal Tract Using Malayalam Vowels". International Journal of Emerging Technologies and Innovative Research, 6(3), 549-556. Impact Factor = 5.87
• Bibish Kumar, K. T., Sunil John, Muraleedharan, K. M., & Sunil Kumar, R. K. (2019). "Audio-Visual Asynchrony in Malayalam phonemes and allophones". International Journal of Recent Technology and Engineering, 8(3), 8359-8362. https://doi.org/10.35940/ijrte.C6468.098319 SJR = 0.11
• Bibish Kumar, K. T., Sunil John, Muraleedharan, K. M., & Sunil Kumar, R. K. (2019). "Hierarchical Picture of existing Audio-Visual Speech Database". International Journal of Recent Technology and Engineering, 8(3), 8372-8379.https://doi.org/ 10.35940/ijrte.C6483.098319SJR = 0.11
• Bibish Kumar, K.T., Sunil Kumar, R.K., Sandesh, E.P.A. et al. "Viseme set identification from Malayalam phonemes and allophones". International Journal of Speech Technology, Springer, 22(4), 1149–1166 (2019). https://doi.org/10.1007/s10772-019-09655-0 SJR = 0.24
• Bibish Kumar, K. T., Sunil Kumar, R. K., Sandesh, E. PA., & Lajish, V. L. (2020). "A Comparative study of lip region segmentation in different colour space for lip reading in Indian context". International Journal of Tomography and Simulation, 33(1), 73-89. SJR = 0.12

Papers in Conference:

• Bibish Kumar, K.T., Muraleedharan, K.M., Sunil John. et al. (2019). "Effectiveness of K-S Test to Classify the Time Domain Distribution Pattern of Speech Signal for Forensic Applications". National Conference on Cyber Security and Digital Forensic (CYFO-2019), organised by Department of School of Information Science and Technology Kannur University during 16 -18 January 2019.
• “Effectiveness of Kolmogrov-Smirnov Test to Classify the Time Domain Distribution Pattern of Speech Signal for Forensic Applications”,National Seminar on Cybersecurity and Digital Forensics on 16th,17th and 18th January 2019 organized by School of Information Science & Technology, Kannur University.
• “Optimization of Time Delay and Embedding Dimension for Phase space Reconstruction to Analyze the Dynamical Behavior of Vocal tract”. 13thWestern Pacific Acoustics Conference on 11th - 15th November 2018, CSIR- National Physical Laboratory, New Delhi.
• “High frequency spectral coefficients of speech time series and positive Lyapunov exponents of speech time series”,National Conference on advances in Statistical Methods on 08-10 November 2018, Department of Statistical Sciences, Kannur University.
• “Color Thresholding Based Approaches to Lip Segmentation for Visual Speech Recognition”, 7th National Conference on Indian Language Computing, NCILC-2017, on 18th February 2017organized by Dept. of Computer Application, Cochin University of Science and Technology, Kochi.
• “Characterisation of vocal tract by box counting dimension analysis”, International Conference on Non linearPhysics:Theory and Experiment on 13-14 December 2016, Dept. of Physics and Research Centre, Farook College ,Kozhikode.
• “Automatic Keyword Spotting from Malayalam Conversational Speech Using HMM.”  National Symposium on Acoustics, NSA-2015 Goa, Acoustics for Ocean Environment, 2015.
• “Improved Vowel Phoneme Classification over Eigen values of the Reconstructed Phase Space Using ANN.” 5th National Conference on Indian Language Computing (NCILC – 2015), 2015.
• "Malayalam speech controlled mulipurpose Robotic arm", In 26th Kerala Science Congress, Wayanad, pp. 28-31. 2014.
• Research paper entitled “Developmental Strategies For ICT Tools Supporting Constructive Paradigm in Science Education” accepted for presentation 26th Kerala Science Congress Pookode, Wayanad: 28-31 Jan. 2014 and got Best Paper Award.
• “Power Spectrum Analysis of Speech Signals (Focused On Chaotic Properties) for Speaker Identification.” Acoustics 2013 New Delhi, 2013.
• “HMM Word Modeling and Short Query based Directory Access for Automatic Phone Dialing in Malayalam.” Acoustics 2013, New Delhi, 2013.
• “A Quick Review of Recognition Strategies Based on Neural Network and Neuro-fuzzy Approaches with Special Reference to HCR in Indian Languages”, Proc. 3rd National Conference on Indian Language Computing (NCILC2013), 19-20 January, CUSAT, Cochin, 2013.
• “Malayalam consonant vowel recognition based on Visual Geometric Features and ANN”, Proc. 3rd National Conference on Indian Language Computing (NCILC2013), 19-20 January, CUSAT, Cochin, 2013.
• Aljinu Khadar, K. V., Bibish Kumar, K. T., Muraleedharan. K.M., Sunil John., and Sunil Kumar, R. K. (2020). "Vocal Tract Length and Formant Frequency Analysis for Forensic Speech Applications". National Conference on Computational Intelligence, Practices and Technologies (ConCIPT 2020) organised by Department of Computer Science, University of Calicut during 9 -11 January 2020.
• Bibish Kumar, K. T., Sunil John, Muraleedharan, K. M., & Sunil Kumar, R. K. (2021). "Linguistically involved Data-driven Approach for Malayalam Phoneme-to-Viseme Mapping". In Applied Speech Processing: Algorithms and Case Studies. Elsevier Press (Under Publication).
• National Conference on "Computational Intelligence, Practices and Technologies (ConCIPT 2020)" organized by Department of Computer Science, University of Calicut, Kerala, during 9 -11 January 2020
• 2nd Police Science Congress on "Forensic Science and Forensic Psychology " organized by Kerala Police Academy & Mahatma Gandhi University during 22- 23 October 2020