14th International Congress of Phonetic Sciences (ICPhS-14)
San Francisco, CA, USA
A recording of 96 sentences read by two speakers of Castilian
Spanish was analyzed acoustically to investigate the effects of the
lexical stress upon two phonetic properties: syllable duration and
F0 contours. The results suggest that there are two independent
tendencies toward isochrony.
Firstly, unstressed syllables tend to be shorter when there are more unstressed syllables between stressed ones, suggesting a tendency toward isochronous stress in this dialect, traditionally considered to be syllable-timed.
Secondly, Fujisaki's F0 model was applied to the same recording, and a tendency was observed for the interval between two accent commands to be longer when it was too short, and to be shorter when it was too long. This can be seen as a tendency to isochronous occurrence of accent commands.
Bibliographic reference. Kimura, Takuya (1999): "Two tendencies toward isochrony in Castilian Spanish short declarative sentences", In ICPhS-14, 455-458.