Abstract
The effect of advancing age on speech production characteristics is not clearly understood. Yet it is crucial for those who study and serve the normal and neurologically impaired geriatric populations. The purpose of this study was to obtain a normative database for the speech production characteristics of an older geriatric group. Fourteen veterans, 87 to 93 years old, served as subjects. A total of 40 sentences were produce at a conversational rate by each gentleman. Wideband (300-Hz) spectrograms were created from high-quality tape recordings. Specified acoustic measures were made (consonant, vowel, and voice onset time durations, and vowel formant trajectories) via a hit-pad digitizer and microcomputer sonogram analyzer program. Descriptive analysis was performed to obtain normal parameters of speech production. Current theories of aging and neurological diseases affecting speech will be discussed.
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