About
8
Publications
1,607
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
79
Citations
Current institution
Publications
Publications (8)
Contours traced by trained phoneticians have been considered to be the most accurate way to identify the midsagittal tongue surface from ultrasound video frames. In this study, inter-measurer reliability was evaluated using measures that quantified both how closely human-placed contours approximated each other as well as how consistent measurers we...
The present study investigated the perception of phrase-level prosodic prominence in American English, using the Rapid Prosody Transcription (RPT) task. We had two basic goals. First, we sought to examine how listeners’ subjective impressions of prominence relate to phonology, defined in terms of Autosegmental-Metrical distinctions in (a) pitch acc...
No PDF available
ABSTRACT
Ultrasound imaging is a non-invasive technique for the measurement of the tongue in speech. Recent advancements in analytical edge detection algorithms and deep learning methods have improved tongue contour segmentation. However, most edge detection algorithms require user input as initialization “seeds” and accuracy can d...
Previous studies found that non-native vowel categorization can be explained by the Perceptual Assimilation Model (PAM), based on perception experiments. However, fewer production studies have been carried out to further support the findings. Here we examined English monophthongs and diphthongs produced by Mandarin learners of English (MAE), compar...
Tongue movement from one speech element to another has been found to consist largely of two patterns, "pivot" and "arch" [5]. Diphthongs act as a single element for some purposes but two for others. What does the pattern of tongue changes indicate about their status? Our data come from ultrasound, which lacks information on most of the hard structu...
The present study investigated "anticipatory shortening", the durational compression of syllables in longer prosodic phrases. Our primary motivations were related to this phenomenon's relevance to speech production planning; these durational adjustments depend on upcoming material, and as such, are generally assumed to be indicative of speakers' lo...
Diphthongs have formant transitions sensitive to speaking rate, stress, vowel quality, and language ability. Tongue movement typically shows a functional “pivot” where the palate to tongue distance is almost constant; some combinations result in an “arch,” with only part of the tongue moving [Iskarous, J. Phon. 33, 363-381, 2005]. Here, ultrasoundi...
This study investigated (1) whether Korean learners of English use discourse-level prosody in L2 production as native speakers of English do, and (2) whether discourse-level prosody is also found in the Korean language, as is evident in the prosody of native speakers of English. The study compared the production of the same 15 sentences in two type...
