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The perception of prosodic prominence is influenced by different sources like different acoustic cues, linguistic expectations and context. We use a generalized additive model and a random forest to model the perceived prominence on a corpus of spoken German. Both models are able to explain over 80% of the variance. While the random forests give us some insights on the relative importance of the cues, the general additive model gives us insights on the interaction between different cues to prominence.
Die vorliegende Dissertation beschäftigt sich mit verschieden Methoden zur Erhebung von perzeptuellen Prominenzurteilen von naiven Hörern im Deutschen. Es werden zwei Experimente vorgestellt, die sich zum einen mit der Verwendung von verschiedenen Skalen, zum anderen mit der Verwendung von unterschiedlichen Bewertungsebenen zur Beurteilung von perzeptueller Prominenz beschäftigen. Die Ergebnisse zeigen, dass Ergebnisse von Studien, welche auf unterschiedlichen Erhebungstechniken beruhen nicht ohne weiteres vergleichbar sind. Die Arbeit untersucht außerdem die Effekte einer Normalisierung der Prominenzurteile. Die Dissertation schließt mit einem Ausblick für zukünftige Studien. Hierbei werden hauptsächlich die vielfältigen Interaktionen von verschiedenen Quellen und dem Kontext bei der Beurteilung der perzeptuellen Prominenz adressiert.
A frequently replicated finding is that higher frequency words tend to be shorter and contain more strongly reduced vowels. However, little is known about potential differences in the articulatory gestures for high vs. low frequency words. The present study made use of electromagnetic articulography to investigate the production of two German vowels, [i] and [a], embedded in high and low frequency words. We found that word frequency differently affected the production of [i] and [a] at the temporal as well as the gestural level. Higher frequency of use predicted greater acoustic durations for long vowels; reduced durations for short vowels; articulatory trajectories with greater tongue height for [i] and more pronounced downward articulatory trajectories for [a]. These results show that the phonological contrast between short and long vowels is learned better with experience, and challenge both the Smooth Signal Redundancy Hypothesis and current theories of German phonology.
Streefkerk defines prominence as the perceptually outstanding parts in spoken language. An optimal rating scale for syllable prominence has not been found yet. This paper evaluates a 4-point, an 11-point, a 31-point, and a continuous scale for the rating of syllable prominence and gives support for scales using a higher number of levels. Priming effects found by Arnold, et al., could only be replicated using the 31-point scale.
Prominence has been widely studied on the word level and the syllable level. An extensive study comparing the two approaches is missing in the literature. This study investigates how word and syllable prominence relate to each other in German. We find that perceptual ratings based on the word level are more extreme than those based on the syllable level. The correlations between word prominence and acoustic features are greater than the correlations between syllable prominence and acoustic features.