Patricia A. Keating

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This study examines relationships between external face movements, tongue movements, and speech acoustics for consonant-vowel (CV) syllables and sentences spoken by two male and two female talkers with different visual intelligibility ratings. The questions addressed are how relationships among measures vary by syllable, whether talkers who are more(More)
This study is a first step in a large-scale study that aims at quantifying the relationship between external facial movements, tongue movements, and the acoustics of speech sounds. The database analyzed consisted of 69 CV syllables spoken by two males and two females; each utterance was repeated four times. A Qualysis (optical motion capture system) and an(More)
This study investigates effects of three prosodic factors—prosodic boundary (Utterance-initial vs. Utterance-medial), lexical stress (primary vs. secondary) and phrasal accent (accented vs. unaccented)—on articulatory and acoustic realizations of word-initial CVs (/nε/, /tε/) in trisyllabic English words. Articulatory measurements include linguopalatal(More)
This paper reports a set of studies of some phonetic characteristics of the American English represented in the TIMIT speech database. First we describe some relevant characteristics of TIMIT, and how we use the non-speech files on the TIMIT CD with a commercial database program. Two studies are then described: one using only the non-audio parts of TIMIT(More)
A complete understanding of visual phonetic perception (lipreading) requires linking perceptual effects to physical stimulus properties. However, the talking face is a highly complex stimulus, affording innumerable possible physical measurements. In the search for isomorphism between stimulus properties and phoneticeffects, second-order isomorphism was(More)
This paper investigates the relationship between visual confusion matrices and physical (facial) measures. The similarity structure in perceptual and physical measures for visual consonants was examined across four talkers. Four talkers, spanning a wide range of rated visual intelligibility, were recorded producing 69 Consonant-Vowel (CV) syllables. Audio,(More)
This paper introduces a new dynamical model which enhances the relationship between face movements and speech acoustics. Based on the autocorrelation of the acoustics and of the face movements, a causal and a non-causal filter are proposed to approximate dynamical features in the speech signals. The database consisted of sentences recorded acoustically, and(More)
Little is known about intraspeaker changes in voice across changing speaking situations in everyday life. In this study, we examined acoustic variations between and within 5 talkers and their effect on the likelihood that voice samples would not be identified as coming from the same talker. Talkers were drawn from a large database recorded to capture(More)