Using a radial ultrasound probe's virtual origin to compute midsagittal smoothing splines in polar coordinates (2015)
Type of ContentJournal Article
PublisherUniversity of Canterbury. New Zealand Institute of Language, Brain & Behaviour
Tongue surface measurements from midsagittal ultrasound scans are effectively arcs with deviations representing tongue shape, but smoothing-spline analysis of variances (SSANOVAs) assume variance around a horizontal line. Therefore, calculating SSANOVA average curves of tongue traces in Cartesian Coordinates [Davidson, J. Acoust. Soc. Am. 120(1), 407–415 (2006)] creates errors that are compounded at tongue tip and root where average tongue shape deviates most from a horizontal line. This paper introduces a method for transforming data into polar coordinates similar to the technique by Mielke [J. Acoust. Soc. Am. 137(5), 2858–2869 (2015)], but using the virtual origin of a radial ultrasound transducer as the polar origin—allowing data conversion in a manner that is robust against between-subject and between-session variability.
CitationHeyne, M., Derrick, D. (2015) Using a radial ultrasound probe's virtual origin to compute midsagittal smoothing splines in polar coordinates. The Journal of the Acoustical Society of America, 138(6), pp. EL509-EL514.
This citation is automatically generated and may be unreliable. Use as a guide only.
ANZSRC Fields of Research47 - Language, communication and culture::4704 - Linguistics::470410 - Phonetics and speech science
Showing items related by title, author, creator and subject.
Native language influence on brass instrument performance: An application of generalized additive mixed models (GAMMs) to midsagittal ultrasound images of the tongue Derrick, Donald; Heyne M; Al-Tamimi J (2019)This paper presents the findings of an ultrasound study of 10 New Zealand English and 10 Tongan-speaking trombone players, to determine whether there is an influence of native language speech production on trombone ...
Heyne, M.; Derrick, Donald (University of Canterbury. New Zealand Institute of Language, Brain & Behaviour, 2014)This paper presents some initial findings regarding the influence of First Language on playing brass instruments. Using ultra- sound imaging of the tongue, vowel production and sustained trombone notes were compared for a ...
Heyne, M.; Derrick, Donald (University of Canterbury. New Zealand Institute of Language, Brain & Behaviour, 2015)This paper builds on initial evidence of First Language influence on brass playing presented in Heyne and Derrick (2013)  by indicating how tongue positioning might affect trombone timbre. Ultrasound imaging ...