title: Articulatory dimensions of hearing-impaired speakers' intelligibility: evidence from a time-related aerodynamic, acoustic, and electroglottographic study.
abstract: Regression and principal components analyses were employed to study the relationship between 30 aerodynamic speech parameters and the speech intelligibility of 40 severely to profoundly hearing-impaired speakers. Regression analysis on the original 30 aerodynamic variables revealed that speech intelligibility was predicted by a cognate-pair voice onset-time difference measure and a measure of the stability of the volume-velocity rise time. Principal components analysis of the 30 independent variables derived seven factors that accounted for 84.3% of the variance in the original 30 parameters. Subsequent regression analysis using the seven factors as predictor variables revealed four factors with independent relationships to speech intelligibility. These included a factor that reflected cognate-pair voice onset-time distinctions, a factor that reflected cognate-pair peak volume-velocity distinctions, and two other factors, which reflected production stability of temporal distinctions between cognate pair members.
authors: National Technical Institute for the Deaf, Rochester Institute of Technology, NY 14623.
authors: V J
authors: VJ
authors: Samar
authors: D E
authors: DE
authors: Metz
authors: N
authors: N
authors: Schiavetti
authors: R W
authors: RW
authors: Sitler
authors: R L
authors: RL
authors: Whitehead
mesh_terms: D000328:Adult; D000388:Air; D005163:Factor Analysis, Statistical; D005931:Glottis / Q000503:physiopathology; D006311:Hearing Disorders / Q000503:physiopathology*; D006801:Humans; D012044:Regression Analysis; D013061:Speech Acoustics; D013065:Speech Intelligibility / Q000502:physiology*