TY - DATA T1 - Teeth in 3D vocal tract models (Traser et al., 2017) PY - 2017/09/12 AU - Louisa Traser AU - Peter Birkholz AU - Tabea Viktoria Flügge AU - Robert Kamberger AU - Michael Burdumy AU - Bernhard Richter AU - Jan Gerrit Korvink AU - Matthias Echternach UR - https://asha.figshare.com/articles/figure/Teeth_in_3D_vocal_tract_models_Traser_et_al_2017_/5386771 DO - 10.23641/asha.5386771.v1 L4 - https://ndownloader.figshare.com/files/9271018 KW - 3D printing KW - vocal tract KW - teeth KW - anatomy KW - anatomical model KW - MRI KW - acoustics KW - resonance frequency KW - voice KW - timbre KW - physiology KW - Anatomy KW - Acoustics and Acoustical Devices; Waves N2 - Purpose: Recently, efforts have been made to investigate the vocal tract using magnetic resonance imaging (MRI). Due to technical limitations, teeth were omitted in many previous studies on vocal tract acoustics. However, the knowledge of how teeth influence vocal tract acoustics might be important in order to estimate the necessity of implementing teeth in vocal tract models. The aim of this study was therefore to estimate the effect of teeth on vocal tract acoustics.Method: The acoustic properties of 18 solid (3-dimensional printed) vocal tract models without teeth were compared to the same 18 models including teeth in terms of resonance frequencies (fRn). The fRn were obtained from the transfer functions of these models excited by white noise at the glottis level. The models were derived from MRI data of 2 trained singers performing 3 different vowel conditions (/i/, /a /, and /u/) in speech and low-pitched and high-pitched singing.Results: Depending on the oral configuration, models exhibiting side cavities or side branches were characterized by major changes in the transfer function when teeth were implemented via the introduction of pole-zero pairs.Conclusions: To avoid errors in modeling, teeth should be included in 3-dimensional vocal tract models for acoustic evaluation.Supplemental Material S1. Display of the 36 3D-printed models (three vowels, three tasks, two subjects, with and without teeth).Traser, L., Birkholz, P., Flügge, T. V., Kamberger, R., Burdumy, M., Richter, B., ... Echternach, M. (2017). Relevance of the implementation of teeth in three-dimensional vocal tract models. Journal of Speech, Language, and Hearing Research, 60, 2379–2393. https://doi.org/10.1044/2017_JSLHR-S-16-0395 ER -