14th International Congress of Phonetic Sciences (ICPhS-14)
San Francisco, CA, USA
The coronals [stdln] have place-neutral articulatory gestures:
The front tongue creates a constriction against the structure(s)
anatomically opposite to it. On the contrary, [ɴʃʁ] have
When changing from hyper to hypo style, Swedish postalveolar /ɴ/ and [ʃ] move substantially forwards and /s/ somewhat backwards in EPG registrations; the [ʃ] change is greatest, reflecting its more posterior hyper gesture. Thus, constriction place patterns of /s/, /ɴ/, and [ʃ] in hypo as compared to hyper speech is characterized by an aggregation in a much smaller sagittal range along the middle part of the alveolar range, covering the neutral gesture. We hypothesise that this aggregation is closely connected with the neutral coronal gesture: The front tongue articulates closer to this gesture in phrases than in isolated productions. Unsystematic studies of Swedish [tdln] and [ʁ] support this hypothesis. Speech more hypo will probably show a still more narrow range.
Bibliographic reference. Lundqvist, Sture / Lindblad, Per (1999): "The production of coronals in hyper and hypo speech", In ICPhS-14, 421-424.