Various studies have shown that stressed syllables are more easily processed by human hearers than unstressed syllables. However, the superior intelligibility of stressed syllables may be attributable either to phonetic characteristics such as increased amplitude and duration, or to informational (phonological) factors such as the wider range of vowel types they permit. This paper presents results of a gating experiment which suggest that the latter explanation accounts for stressed syllables' greater intelligibility.
Bibliographic reference. McAllister, J. M. (1989): "The processing of stressed syllables in connected speech", In EUROSPEECH-1989, 2686-2689.