Laryngeal mechanisms and interarticulator timing in voiceless consonant production.

Number 971
Year 1995
Drawer 18
Entry Date 07/13/1998
Authors Löfqvist, Anders.
Contact
Publication Bell-Berti, F., and L.J. Raphael. Producing Speech: Contemporary Issues. For Katherine Safford Harris. AIP Press: New York.
url http://www.haskins.yale.edu/Reprints/HL0971.pdf
Abstract During speech, parts of the vocal tract are briefly coupled in a functional manner to produce the acoustic characteristics of speech sounds. For example, the production of the bilabial voiceless stop /p/ requires the following set of actions. The lips are closed by joint activity of the jaw and the lips. The velum is elevated to seal off the entrance into the nasal cavity. The glottis is widened and the longitudinal tension of the vocal folds is often increased to prevent glottal vibrations. These articulatory actions all contribute to the period of silence in the acoustic signal and the increase in oral air pressure that are associated with a voiceless stop consonant. Speech production thus involves control and coordination of different parts of the vocal tract. Variations in their timing and coordination are commonly used to produce linguistic contrasts. For example, in stop consonants timing is used to control voicing and aspiration. In the following, we shall review aspects of voicelss consonant production with particular emphasis on laryngeal mechanisms and the coordination between laryngeal and supralaryngeal events. The material will be discussed in relation to control of coordinated movements in general.
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