| Abstrakt: |
In the first part of this paper we attempt to overview several roles of intensity in speech perception. It appears that the auditory treatment of intensity is highly dependent on temporal factors. If the observation duration is too brief, the importance of the linguistic function of intensity may be underestimated and its auditory effect incompletely observed. Also the interactions between the intensity and fundamental frequency are different at the segmental or suprasegmental level of speech perception. In the second part of the paper, we compare and discuss the results of Rossi (1978) on the perception of intensity glides on vowels and our results on the discrimination of intensity glides at the end of sentences. The aim is to determine which auditory treatment is used in both cases. We show that a “simple” psychoacoustic model (“syllabic” integration) can explain the observed results. We emphasize the importance of a purely psychoacoustic study of a physical parameter in its context before investigating the linguistic function and treatment of that parameter. |
