Dr. Mahavir Singh is the Head of the Acoustics, Ultrasonics and Vibration (AUV) section of the CSIR - National Physical Laboratory, New Delhi, India. He has over 25 years of experience in acoustics and vibration . He received his  Ph.D in acoustics from IIT, Delhi. His main research interests are in the field of building acoustics, noise and vibration control, calibration and testing of electro-acoustic equipment, acoustical products and devices, maintenance, up-gradation and realization of national primary standards for acoustics and vibration. Dr. Singh has published over 125 research papers in journals and conference proceedings as well as authored a book on noise control in buildings. He is a fellow of the Acoustical Society of India (ASI), Ultrasonics Society of India (USI), Metrology Society of India (MSI), the Institution of Engineers (IEI) and the International Institute of Acoustics and Vibration (IIAV-USA). Dr. Yasser Rafat is a faculty in the Mechanical Engineering department of the Aligarh Muslim University, India.  He received his B. Tech. in Mechanical Engineering from the Aligarh Muslim University, India. For further studies, he moved to Canada where he pursued his M. Tech. from Concordia University and his Ph.D from McGill University. Dr. Rafat has authored several publications and delivered talks in the area of thermofluids and thermoacoustics. He has served as a reviewer for POMA (Acoustical Society of America). He has also filed and published three patents in the area of charging infrastructure of xEVs and cloud based health management system. His research interests include thermoacoustic refrigerators and engines, building acoustics, ride vibration analysis, sports projectile aerodynamics, and heat management of Li-ion batteries. He is a life member of the Acoustical Society of India (ASI).