Stop-consonant recognition for normal-hearing listeners and listeners with high-frequency hearing loss. I: The contribution of selected frequency regions.
The purpose of this study is to specify the contribution of certain frequency regions to consonant place perception for normal-hearing listeners and listeners with high-frequency hearing loss, and to characterize the differences in stop-consonant place perception among these listeners. Stop-consonant recognition and error patterns were examined at various speech-presentation levels and under conditions of low- and high-pass filtering. Subjects included 18 normal-hearing listeners and a homogeneous group of 10 young, hearing-impaired individuals with high-frequency sensorineural hearing loss. Differential filtering effects on consonant place perception were consistent with the spectral composition of acoustic cues. Differences in consonant recognition and error patterns between normal-hearing and hearing-impaired listeners were observed when the stimulus bandwidth included regions of threshold elevation for the hearing-impaired listeners. Thus place-perception differences among listeners are, for the most part, associated with stimulus bandwidths corresponding to regions of hearing loss.
Dubno
J R
JR
UCLA School of Medicine, Division of Head and Neck Surgery 90024.
Dirks
D D
DD
Ellison
D E
DE
D000328:Adult; D003463:Cues; D006309:Hearing / Q000502:physiology*; D034381:Hearing Loss / Q000503:physiopathology*; D006316:Hearing Loss, High-Frequency / Q000503:physiopathology*; D006319:Hearing Loss, Sensorineural / Q000503:physiopathology; D006801:Humans; D008297:Male; D010700:Phonetics; D013063:Speech Discrimination Tests; D013067:Speech Perception / Q000502:physiology*