Prosodic conditioning of phonetic detail of German plosives
Kuzla, C., & Ernestus, M.
Prosodic conditioning of phonetic detail of German plosives. In J. Trouvain, & W. J. Barry (Eds.
), Proceedings of the 16th International Congress of Phonetic Sciences (ICPhS 2007)
(pp. 461-464). Dudweiler: Pirrot.
The present study investigates the influence of
prosodic structure on the fine-grained phonetic
details of German plosives which also cue the
phonological fortis-lenis contrast.
Closure durations were found to be longer at
higher prosodic boundaries. There was also less
glottal vibration in lenis plosives at higher prosodic
boundaries. Voice onset time in lenis plosives was
not affected by prosody. In contrast, for the fortis
plosives VOT decreased at higher boundaries, as did
the maximal intensity of the release.
These results demonstrate that the effects of
prosody on different phonetic cues can go into
opposite directions, but are overall constrained by the
need to maintain phonological contrasts. While
prosodic effects on some cues are compatible with a
‘fortition’ account of prosodic strengthening or with a
general feature enhancement explanation, the effects
on others enhance paradigmatic contrasts only within
a given prosodic position.