Presentation: Vocal efficiency in speech, singing, and across species
Recent investigations have shown that vocal efficiency, defined as the sound power radiated from the mouth divided by theaerodynamic power produced at the lungs, varies greatly with fundamental frequency, airway shape, and source-airway interaction. Some birds have optimized efficiency to the point that sound energy radiated from the beak approaches a significant portion of their caloric energy intake from food. In humans, a dichotomy exists between maximum acoustic power transfer to the listener and maximum information transfer with speech sounds that compromise efficiency.
Ingo Titze, PhD
Ingo R. Titze is a vocologist with formal education in physics (PhD), electrical engineering (MSEE), and music. He has directed the National Center for Voice and Speech for 31 years. He is currently Senior Scientist at the Utah Center for Vocology and Adjunct Professor in Otolaryngology, Biomedical Engineering, and Music at the University of Utah. He continues as Emeritus Distinguished Professor at the University of Iowa. He is the 1996 recipient of the ALA Award, an Honoree of the American Speech Language and Hearing Association, and a Gold and Silver Medalist of the Acoustical Society of America. The Voice Foundation has named the Sundberg-Titze award in his honor. Dr. Titze has authored five books, edited three books, and published over 500 journal articles. He continues to be an active singer.
Financial Disclosure:Dr. Titze has no financial relationships to disclose.
Non-Financial Disclosure:Dr. Titze has no non-financial relationships to disclose.