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O Fujimura

Publications and source records attributed to O Fujimura.

46 records · Page 3Linked to original sources
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The C/D model and prosodic control of articulatory behavior.

The Converter and Distributor (C/D) model is a generative description of articulatory gesture organization for utterances. Its input comprises specifications for syllables by features, a paraphonologically augmented metrical structure, and system parameters for utterance conditions. A syllable-boundary pulse train is computed as a time function representing the skeletal rhythmic structure of the utterance. Control functions for articulators are computed by superimposing consonantal elemental gestures onto the base function, which includes voicing, vocalic, mandibular, and tonal functions associated with the pulse train. A preliminary analysis of microbeam data for experimental dialogues, using jaw opening as an approximate measure of the syllable magnitude, inferred syllable and boundary durations consistently with durational characteristics observed in the acoustic waveform.

Humans↗
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Methods and goals of speech production research.

A personal view of current issues in speech production research is presented with some historical comments. Particular emphasis is placed on issues directly concerned with the relation between abstract phonological representations and speech signals, using a model of speech organization in reference to articulatory movement patterns. Experimental methods to support such linguistic research efforts, including some instrumental methods for recording articulatory data, are also reviewed from this particular point of view. Preparatory sections review the physical process and some physiological studies. The discussion focuses on the temporal organization of speech, deviating from the classical segmental concatenation and coarticulation principles, and discussing new possibilities about phonetic implementation in conjunction with an abstract representation framework of nonlinear phonology.

Humans↗
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Articulatory correlates of prosodic control: emotion and emphasis.

This study examines mandibular correlates of prosodic control in nonread dialog exchanges, in which the subject is asked to repeat the same correction of one digit in a three-digit sequence consisting of "five" or "nine" followed by "Pine Street." Articulatory and acoustic data were collected for four speakers of American English at the X-ray Microbeam Facilities at the University of Wisconsin. Jaw opening was measured as vertical jaw position at the time of maximum opening. Middle digits perceived by independent listeners as emphasized generally show jaw opening which is larger than the average jaw opening for the utterances in which they occur. As the speaker repeatedly makes the same correction, not only does jaw opening increase significantly on the corrected digit but also the overall amount of jaw opening on all digits in the corrected exchanges increases. Independent separate perception tests show that listeners also perceive the speakers' answers to be more irritated as the speaker repeats the same correction. The findings suggest a local and global use of the jaw opening gesture to produce both linguistic or paralinguistic and extralinguistic information, that is, word emphasis and the emotional tenor of the dialog itself.

Adult↗