Deirdre D. Michael, PhD

Assistant Professor, Department of Otolaryngology, Head and Neck Surgery

Deirdre D. Michael

Contact Info

Mailing Address:
University of Minnesota Health
Clinics and Surgery Center
Mail Code 2121DG
909 Fulton Street, SE
Minneapolis, MN 55455


Dr. Michael has been a singer all her life and a singing teacher for 30 years, and therefore has expertise in treating voice problems in professional voice users such as singers, actors, and teachers. A common part of her practice is to return injured singers to the stage. She also has expertise in functional breathing problems, particularly in athletes, and she draws on her experience as a runner in treating these disorders.

Dr. Michael is currently engaged in a variety of research projects involving objective measures of voice quality, especially perceptual and acoustic measures. As a singer and singing teacher, she has a special interest in objective measures of singing voice quality. One current research project compares acoustic and perceptual measures of singing voice, while another analyzes perceptual strategies in judgments of intonation. Results so far have been presented at two sessions of the International Conference on the Physiology and Acoustics of Singing. Another ongoing project follows vocal changes in singers after multiple performances. Several studies of vocal fold changes, stroboscopic analyses, acoustic analyses, and perceptual judgments have been presented at the Voice Foundation’s Annual Symposia on the Care of the Professional Voice. Treatment for voice disorders is another area of ongoing research, measuring results of surgical treatments for unilateral vocal fold paralysis, and functional treatment for vocal fold bowing.

Awards & Recognition

  • “Spirit of MSHA” award from the Minnesota Speech-Language-Hearing Association, recognizing a history of service to the community of voice professionals, 2008

Professional Associations

Co-Director - Lions Voice Clinic



  • Heman-Ackah YD, Michael DD, Goding GS. The relationship between cepstral peak prominence and selected parameters of dsyphonia. J Voice 2002;16(1);20-27.
  • Heman-Ackah YD, Heuer RJ, Michael DD, et al. Cepstral peak prominence: a more reliable measure of dysphonia. Ann Otol Rhinol Laryngol 2003; 112
  • Olson, D. E. L., Goding, G. S., Michael, D. D. (1998). Acoustic and perceptual evaluation of laryngeal reinnervation by ansa cervicalis transfer. Laryngoscope, 108
  • Michael, D. D., Siegel, G. M., and Pick, H. L. (1995). Effects of distance on vocal intensity. Journal of Speech and Hearing Research, 38(5)