1. University of Tennessee,Department of Mechanical, Aerospace and Biomedical Engineering,Knoxville,TN,USA
2. University of Tennessee,Department of Electrical Engineering and Computer Science,Knoxville,TN,USA
3. College of Health Professions, University of Tennessee Health Science Center,Department of Audiology and Speech Pathology,Knoxville,TN,USA
4. University of Iowa,Department of Communication Sciences and Disorder,Iowa City,IA,USA