4th International Conference on Spoken Language Processing
Philadelphia, PA, USA
The influence of word stress and the tense/lax vowels opposition on the phonation process in German was investigated. A set of stimulus words in which tense and lax vowels occurs in both stressed and unstressed position was read by ten speakers of German. The phonation behaviour was investigated using the electroglottographic signal (EGG) recorded by the Laryngograph. The EGG signal was segmented and described using a set of timing and shape parameters. To compare the results with the literature the analysis concentrates on the Open and Speed Quotients. The ANOVA analysis shows that the main correlates of stress are the increase of fundamental frequency and the increase of closing and opening slopes steepness of the EGG signal. The Open and Speed Quotients depend primairly on other factors, like speakers sex or vowel type. Tenseness causes small changes in the Open Quotient, but the effect often interacts with stress.
Bibliographic reference. Marasek, Krzysztof (1996): "Glottal correlates of the word stress and the tense/lax opposition in German", In ICSLP-1996, 1573-1576.