抄録
Conventional andiometry using pure, tones and monosyllables fail to reveal impairments in the perception of temporal characteristics of speech. Preliminary investigations using natural utterances of disyllabic words indicated specific impairments in the perception of elongated vowels and geminate consonants in hard-of-hearing children. For further analysis of these impairments, computer-generated stimuli were used to measure accuracy of discrimination of duration of non-speech stmuli as well as accuracy of identification of speech stimuli in which segmental duration plays a distinctive role. The results of hard-of-hearing children and adults indicated that none of them differ significantly from the normal group in discrimination of non-speech duration, while their performances in perception of speech stimuli show extensive individual variations, being more strongly correlated with clinical history as well as with past history of education and training than with types and degrees of hearing losses.
