Comparison of Acoustic and Kinematic Approaches to Measuring Utterance-Level Speech Variability

Autor/inn/en	Howell, Peter; Anderson, Andrew J.; Bartrip, Jon; Bailey, Eleanor
Titel	Comparison of Acoustic and Kinematic Approaches to Measuring Utterance-Level Speech Variability
Quelle	In: Journal of Speech, Language, and Hearing Research, 52 (2009) 4, S.1088-1096 (9 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
DOI	10.1044/1092-4388(2009/07-0167)
Schlagwörter	Acoustics; Kinetics; Measurement Techniques; Evaluation Methods; Speech Communication; Measurement Equipment; Stuttering; Correlation; Speech Impairments; Scores; Articulation (Speech); Children; Adolescents; Young Adults; Foreign Countries; United Kingdom (England) + Suchen Sie Ihr Suchwort? Akustik; Kinetik; Messtechnik; Messinstrument; Stammer; Stottern; Korrelation; Speech impairment; Speech handicap; Speech handicaps; Language handicps; Language impairments; Sprachbehinderung; Child; Kind; Kinder; Adolescent; Adolescence; Adoleszenz; Jugend; Jugendalter; Jugendlicher; Young adult; Junger Erwachsener; Ausland
Abstract	Purpose: The spatiotemporal index (STI) is one measure of variability. As currently implemented, kinematic data are used, requiring equipment that cannot be used with some patient groups or in scanners. An experiment is reported that addressed whether STI can be extended to an audio measure of sound pressure of the speech envelope over time that did not need specialized equipment. Method: STI indices of variability were obtained from lip track (L-STI) and amplitude envelope (E-STI) signals. These measures were made concurrent while either fluent speakers or speakers who stutter repeated "Buy Bobby a puppy" 20 times. Results: L-STI and E-STI correlated significantly. STI decreased with age for both L-STI and E-STI. E-STI scores and L-STI scores discriminated successfully between fluent speakers and speakers who stutter. Conclusion: The amplitude-envelope-over-time signal can be used to obtain an STI score. This STI score can be used in situations where lip movement STI scores are precluded. (Contains 5 figures, 1 table and 1 footnote.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10