3d visual feedback for tongue positioning
Designing and testing a realtime 3D tongue model that can be viewed in a transparent head while a subject talks - for the purposes of treating speech errors and teaching foreign language sounds.




A collaborative study (2006-2009) conducted by researchers at UT Dallas and the University of Pittsburgh  investigated the efficacy of EMA feedback in treating the speech errors of individuals with aphasia/apraxia.







 (Johannesburg, S. Africa, 6-28-11)
In this radio interview, Dr. Katz  discusses FAS with
Jenny Crwys-Williams and local callers.



Doctor Radio (NYU Medical School; 6-9-11).
 Radio interview with Dr. Katz and an individual with potential FAS subsequent to dental surgery, Karen Butler.
(Sirius-XM #81)



NEW (2016 -17) - To participate in a research survey about FAS, click here.
Conducted in collaboration with Professor Nick Miller, University of Newcastle, Great Britain.







Children's speech clearly sounds different than speech produced by adults. Nevertheless, children are understandable most of the time. This research focuses on how children's vowels differ from those produced by adults, and what effect these acoustic features have on perception. We are particularly interested in vowel-inherent spectral change (VISC) and how such patterns change during development.






More information - UTD Callier Center Speech Production Laboratory