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Language and Speech
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Jaw and Order

Christine Mooshammer

Christian-Albrechts Universität Kiel, timo{at}ipds.uni-kiel.de

Philip Hoole

Ludwig-Maximilians Universität München

Anja Geumann

University College Dublin

It is well-accepted that the jaw plays an active role in influencing vowel height. The general aim of the current study is to further investigate the extent to which the jaw is active in producing consonantal distinctions, with specific focus on coronal consonants. Therefore, tongue tip and jaw positions are compared for the German coronal consonants /s, , t, d, n, l/, that is, consonants having the same active articulators (apical/laminal) but differing in manner of articulation. In order to test the stability of articulatory positions for each of these coronal consonants, a natural perturbation paradigm was introduced by recording two levels of vocal effort: comfortable, and loud without shouting. Tongue and jaw movements of five speakers of German were recorded by means of EMMA during /aCa/ sequences. By analyzing the tongue tip and jaw positions and their spatial variability we found that (1) the jaw's contribution to these consonants varies with manner of articulation, and (2) for all coronal consonants the positions are stable across loudness conditions except for those of the nasal. Results are discussed with respect to the tasks of the jaw, and the possible articulatory adjustments that may accompany louder speech.

Key Words: coarticulation • coronal consonants • jaw • loud speech • speech production

Language and Speech, Vol. 50, No. 2, 145-176 (2007)
DOI: 10.1177/00238309070500020101
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