Abstract
The major articulatory constriction for the fricative consonants /f, v/ in English is established by the contact of the maxillary incisors and the lower lip. The constriction is formed by the movements of the lower lip and the mandible. Experiments were conducted to examine lip and jaw movements during the production of /f, v/ in VCV Contexts (V = /i, ε, æ, ɑ, o, u/). Reflectors (<1.5 mm in diameter) were placed on the subject's lips and on rigid wires attached to the jaw and head. Reflector displacements on the midsagittal plane together with voice and upper-teeth-lower-lip contact information were digitized and recorded every 10 msec. The locations of the reflectors with respect to the maxillary incisors were analyzed after correcting for head movements. Preliminary analysis indicated differences in lip and jaw displacement as a function of (1) phonetic context and (2) speaking rate. Results will be contrasted with findings by other investigators for bilabial stops. [Supported by NIH Grant NS-11852-01A from NINDCDS.]
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