| Research, Consultancy, Publication |
- RESEARCH:
‘Navigational Aid for Visually Impaired Swimmers’, AUG 2022 – APRIL 2023, in collaboration with Ms. Sabriye Tenberken, kanthari International, Trivandrum
- ‘Chess for the Visually Impaired’, AUG 2021 – APRIL 2022, in collaboration with TCS Head Accessibility, Dr. Charudatta Jadhav.
- Speech enhancement/reconstruction for persons with impaired speech, DEC 2016 – MAR 2022.
- Voice Analysis: Used throat microphones in conjunction with acoustic microphones, designed a system to measure resonance of the human vocal tract.
- Speech Enhancement: MATLAB based enhancement of electrolaryngeal speech, involving short-time Fourier transform, discrete wavelet transform and non-negative matrix factorization (NMF).
- Speech Reconstruction: Automatic speech recognition (ASR) followed by speech synthesis using RNN networks and Long short term memory (LSTM)
- ‘Speech Therapy Based Visual Feedback System For Cleft Lip/Palate’, Principal Investigator, CERD, NOV 2020 – MAR 2022, in collaboration with NISH
- ‘Analysis of Voice signals using Throat Microphone’ – Principal Investigator, In-house project (MBCET), DEC 2016 – JUN 2019, using tools like Praat, SoX, and MATLAB software.
- ‘Connected Announcement System for Hearing Impaired’, NISH, JUL 2018 to JAN 2019, using BX-6Q1 Control Board programmed with the help of BX LedshowTW Picture Text Editor.
- ‘Fundamental frequency estimation using Praat’, NISH, APR 2017 – MAR 2018
- ‘Vocal Tract Resonance Measurement’, NISH, APR 2017 – JUN 2017
- ‘Wireless system for water level monitoring in overhead tank’, HLL Lifecare, JUN 2015 – MAR 2016, using a GSM module transceiver
- ‘Implementation of Linear Prediction Based Vocoders’, ISRO Respond, SEP 2012 – MAY 2014, using MATLAB and C programming, HDL conversion of G729 Matlab program with the G729 Matlab test bench.
Faculty Publications:
- PUBLICATIONS (LATEST – AFTER 2018):
Lani Rachel Mathew and K Gopakumar, “Improving the Quality and Intelligibility of Electrolaryngeal Speech during Mobile Communication with Landline Analogous Bandpass Filtering”, Journal of Voice 38(5), 1247. e1-1247. e13, Mosby, 2024/9/1 PMID: 35430122, https://pubmed.ncbi.nlm.nih.gov/35430122/ (SCI).
- Akshay R. Nair, Arevind Mohan, Prince Varghese Moncy, Vaishnavi Vinod, Lani Rachel Mathew and J. Jayakumari, “Smart Air Quality Monitoring System for Pulmonary Disease Management – OSA,” 2024 International Conference on Futuristic Technologies in Control Systems & Renewable Energy (ICFCR), India, 2024, pp. 1-6, doi: 10.1109/ICFCR64128.2024.10763385.
- Abin Abraham , Arjun Sajeev , Deepak P Menon , Sreehari J, Lani Rachel Mathew, 2022, Transportation Aiding System for the Visually Impaired, International Journal of Engineering Research & Technology (IJERT), Volume 11, Issue 10, October 2022.
- Lani Rachel Mathew, K. Gopakumar, “Evaluation of speech enhancement algorithms applied to electrolaryngeal speech degraded by noise”, Applied Acoustics, Elsevier, Volume 174, 2021, 107771, ISSN 0003-682X, https://doi.org/10.1016/j.apacoust.2020.107771
- Lani Rachel Mathew, Arun Manohar, Nidheesh S., S. Sainath, Arsha Vijayan and K. Gopakumar, “Speech reconstruction using LSTM networks”, International Journal of Electrical Engineering & Technology, Volume 12, Issue 3, 2021, pp. 269 – 277
- Lani Rachel Mathew, Priya G. and K. Gopakumar,“Piezoelectric Throat Microphone Based Voice Analysis”, Proceedings of IEEE International Conference on Advanced Computing and Communication Systems, 2021, pp. 1603-1608.
- Lani Rachel Mathew, Arun Manohar, Nidheesh S., S. Sainath, Arsha Vijayan and K. Gopakumar,“Speech reconstruction using LSTM networks”, International Journal of Electrical Engineering & Technology, Volume 12, Issue 3, 2021, pp. 269 – 277, ISSN 2249-3085 (Scopus)
- Lani Rachel Mathew, Manju S., Gopakumar K., “Vocal tract parameter estimation and modeling with application in diagnosis of voice disorders”, Proceedings of International Conference on IoT based Control Networks and Intelligent Systems, Elsevier SSRN, 2020, pp. 797 – 809.
- Nandana R, Nissie Mary Johnson, Jubily V Reji, B. S Shreelekshmi, Ancy S. Anselam, Lani Rachel Mathew, K. Gopakumar, “Electrolaryngeal Speech Identification using GMM”, International Journal of Engineering Research and Technology(IJERT), Volume 9, Issue 6, June 2020.
- Amitha Khan Irshad, Arathy Krishnan, Avinash A S, Siddharth Sanjay, Remya Annie Eapen, Lani Rachel Mathew, K. Gopakumar, “Speech Assist” , International Research Journal of Engineering and Technology(IRJET),Vol 7, Issue 7,June 2020,pp 4273-4275.
- Krishnendu Lalaji, Pooja G. S., Rahul Krishnan K. S., Lani Rachel Mathew, Manju S., Suja K. Kunnath and K. Gopakumar, “Speech Analyzer: A Voice Parameter Extraction Device”, Proceedings of Empower Assistive Technology Conference, October 2018.
- Lani Rachel Mathew, K. Gopakumar, “Voice Analysis Using Acoustic and Throat Microphones for Speech Therapy”, Proceedings of Interspeech 2018, pp. 173 – 174, September 2018.
- Haripriya R.P., Lani Rachel Mathew, K. Gopakumar, “Performance evaluation of DWT based Speech Enhancement”, IEEE International Conference on Networks & Advances in Computational Technologies, MBCET, July 2017
- Amritha Vijayan, Bipil Mary Mathai, Karthik Valsalan, Riyanka Raji Johnson, Lani Rachel Mathew, K. Gopakumar, “Throat Microphone Speech Recognition using MFCC”, IEEE International Conference on Networks & Advances in Computational Technologies, MBCET, July 2017
- Haripriya R.P., Lani Rachel Mathew, K. Gopakumar, “Estimation of Non -stationary Noise Power Spectrum using DWT”, 2nd International Conference on Research Trends in Engineering, NITTTR, pp. 414- 419, Apr 2017
- Lani Rachel Mathew and Gopakumar K, “Survey of Speech Reconstruction Algorithms for Speech Impaired Persons”, McGraw Hill. Proceedings of the 2nd International Conference on Signal and Speech Processing, (ICSSP-2016), TKMCE, Kollam, September 8 – 10, 2016.
- Swathikrishna R and Lani Rachel Mathew, “Fingerprint Extraction and Retrieval of Songs Using Multiple Features Including MFCC”, McGraw Hill. Proceedings of the 2nd International Conference on Signal and Speech Processing, (ICSSP-2016), TKMCE, Kollam, September 8 – 10, 2016.
- Aarcha P. K. and Lani Rachel Mathew, “Data Hiding in Audio Carrier using AES algorithm in DWT domain”, International Journal of Advanced Technology in Engineering and Science, vol. 4, Issue 7, pp.14-21, July 2016.
- Lani Rachel Mathew and David John, “Frugal Automation of Sustainable Practices in Kerala”, presented at the International Conference on Electronics, Signal Processing & Communication Engineering (eSpace-2015), organized by Govt. Engineering College, Thrissur, 9-11 December 2015.
- Lani Rachel Mathew, Ancy S. Anselam and Sakuntala S. Pillai, “Quality Evaluation of CELP, LD-CELP and MELP vocoders”, Elsevier Science and Technology Proceedings of International Conference on Signal and Speech Processing, (ICSSP-2014), TKM College of Engineering, Kollam, pp. 236-240, August 21 – 23, 2014.
- Lani Rachel Mathew, Ancy S. Anselam and Sakuntala S. Pillai, “A Study of Low Bit-Rate Linear Prediction based Speech Coders for Indian Dialects”, Proceedings of the IEEE International Conference on Control, Instrumentation, Communication and Computational Technologies (ICCICCT-2014), Noorul Islam University, Tamil Nadu, pp. 432-436, July 10-11, 2014.
- Lani Rachel Mathew, Ancy S. Anselam and Sakuntala S. Pillai, “Analysis of LD-CELP Coder Output with Sound eXchange and Praat Software”, Proceedings of the IEEE Conference on Advanced Communication, Control and Computing Technologies, Syed Ammal Engineering College, Ramanathapuram, Tamil Nadu, pp. 1281-1285, May 8-10, 2014.
- Lani Rachel Mathew, Ancy S. Anselam and Sakuntala S. Pillai, “Performance Comparison of Linear Prediction based Vocoders in Linux Platform”, International Journal of Engineering Trends and Technology, Volume 10, Issue 11, pp 554-558, April 2014.Consultancy Projects
- ‘Speech Therapy Based Visual Feedback System For Cleft Lip/Palate’, November 2020 – ongoing. (National Institute of Speech and Hearing, Trivandrum)
- ‘Analysis of Voice signals using Throat Microphone’ – In-house project (MBCET), December 2016 – June 2019
- ‘Fundamental frequency estimation using Praat’, April 2017 – March 2018 (National Institute of Speech and Hearing, Trivandrum)
- ‘Vocal Tract Resonance Measurement’, April 2017 – June 2017 (National Institute of Speech and Hearing, Trivandrum)
- ‘Wireless system for water level monitoring in overhead tank’, June 2015 – March 2016 (HLL Lifecare, Trivandrum)
- ‘Study and Implementation of Advanced Low Bit Rate Audio Encoding and Decoding Algorithms’: HDL conversion of G729 Matlab program (December 2014 – May 2015), Simulation of linear prediction based vocoders (CELP, LD-CELP, MELP) (September 2012 – May 2014) (ISRO Respond Project)
Details of Faculty as resource person
- ‘Empowering Humanity through Innovation’ for Assistive Technology Internship, 2025, on 11th June 2025.
- ‘Technology Interventions in Speech Therapy’ for Assistive Technology Internship, 2024, on 5th July 2024
- Hands-on session on ‘STM32 Microcontroller’ as part of the Faculty Development Program on ‘Recent Trends in Healthcare and Assistive Technology’ on January 31, 2024
- Took a session on ‘Speech analyzer with Raspberry pi, Praat and Python’, October 2023, as part of the internship ‘Pas de code’ conducted by the Signal processing group and IEEE SPS, MBCET
- Talk on ‘Discover your Prototype’ IEEE WIE, 1st November 2021
- ‘How to Ace your Summer Internship’, 13th April 2021.
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