1. Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA.
2. Department of Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, IN 47907, USA.
3. School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA.
4. School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907, USA.
5. Department of Electronics and Communication Engineering, Tezpur University, Assam 784028, India.