Thomas Hixon, Ph.D. Thomas J. Hixon, Ph.D., CCC-SLP (1940-2009) received his Ph.D. from the University of Iowa and did postdoctoral work in physiology at Harvard University. He was Professor Emeritus of Speech, Language, and Hearing Sciences and Dean Emeritus of the Graduate College at the University of Arizona and had been Head of the Department of Speech, Language, and Hearing Sciences, Director of the National Center for Neurogenic Communication Disorders, Director of Graduate Interdisciplinary Programs, Director of the Movement Neuroscience Program, Research Integrity Officer, and Associate Vice President for Research at the same institution. Dr. Hixon was a Fellow of the American Speech-Language-Hearing Association and was awarded Honors of the Association, the Council of Editor's Award, two Journal Editor's Awards from the Association for the outstanding article of the year, and a Career Teaching Award from the University of Arizona. Dr. Hixon served as Editor of the Journal of Speech and Hearing Research, Speech Section Editor of the Journal of Speech, Language, and Hearing Research, and an editorial reviewer and/or Associate Editor to over a dozen other speech and voice journals. His research interests centered on normal and abnormal speech production and the biomechanics of singing.

• Preface Structure Mechanics Adjustments Variables Control Respiration Prelude Singing Postlude Exercises References Author Index Subject Index About the Author

Thomas Hixon, Ph.D. Thomas J. Hixon, Ph.D., CCC-SLP (1940-2009) received his Ph.D. from the University of Iowa and did postdoctoral work in physiology at Harvard University. He was Professor Emeritus of Speech, Language, and Hearing Sciences and Dean Emeritus of the Graduate College at the University of Arizona and had been Head of the Department of Speech, Language, and Hearing Sciences, Director of the National Center for Neurogenic Communication Disorders, Director of Graduate Interdisciplinary Programs, Director of the Movement Neuroscience Program, Research Integrity Officer, and Associate Vice President for Research at the same institution. Dr. Hixon was a Fellow of the American Speech-Language-Hearing Association and was awarded Honors of the Association, the Council of Editor's Award, two Journal Editor's Awards from the Association for the outstanding article of the year, and a Career Teaching Award from the University of Arizona. Dr. Hixon served as Editor of the Journal of Speech and Hearing Research, Speech Section Editor of the Journal of Speech, Language, and Hearing Research, and an editorial reviewer and/or Associate Editor to over a dozen other speech and voice journals. His research interests centered on normal and abnormal speech production and the biomechanics of singing.

• Preface Structure Mechanics Adjustments Variables Control Respiration Prelude Singing Postlude Exercises References Author Index Subject Index About the Author

Thomas Hixon, Ph.D. Thomas J. Hixon, Ph.D., CCC-SLP (1940-2009) received his Ph.D. from the University of Iowa and did postdoctoral work in physiology at Harvard University. He was Professor Emeritus of Speech, Language, and Hearing Sciences and Dean Emeritus of the Graduate College at the University of Arizona and had been Head of the Department of Speech, Language, and Hearing Sciences, Director of the National Center for Neurogenic Communication Disorders, Director of Graduate Interdisciplinary Programs, Director of the Movement Neuroscience Program, Research Integrity Officer, and Associate Vice President for Research at the same institution. Dr. Hixon was a Fellow of the American Speech-Language-Hearing Association and was awarded Honors of the Association, the Council of Editor's Award, two Journal Editor's Awards from the Association for the outstanding article of the year, and a Career Teaching Award from the University of Arizona. Dr. Hixon served as Editor of the Journal of Speech and Hearing Research, Speech Section Editor of the Journal of Speech, Language, and Hearing Research, and an editorial reviewer and/or Associate Editor to over a dozen other speech and voice journals. His research interests centered on normal and abnormal speech production and the biomechanics of singing.

• Preface Structure Mechanics Adjustments Variables Control Respiration Prelude Singing Postlude Exercises References Author Index Subject Index About the Author