Numerical Model of Coarticulation

Bibliographic Data

ID23328159
AuthorsSven E G Öhman (Department of Speech Communication, Royal Institute of Technology (KTH), Stockholm 70, Sweden), Sven Öhman (KTH Royal Institute of Technology, corresponding author)
Year1967
Volume41
Issue2
Pages310-320
Publication date1967-02-01
Peer ReviewedYes
Open AccessNo
TypeARTICLE
VenueThe Journal of the Acoustical Society of America (JOURNAL)
Journal identifiersISSN: 0001-4966 • E-ISSN: 1520-8524
PublisherAcoustical Society of America (ASA) (PUBLISHER)
DOI10.1121/1.1910340
PMID6040806
OpenAlexW2148985157
LanguageEN
Citations received64

The essential features of the coarticulation properties of Swedish dental stops in vowel-consonant-vowel contexts can be described by the formula s(x; t) = v(x; l)+k (t)[c(x) − v(x; t)]wc(x), where x represents the longitudinal distance between lips and glottis and s(x; t) denotes the shape of the vocal tract at some instant of time, t, during the vowel-consonant vowel utterance. The vowel component, v(x; t) is a linear combination of the three “extreme” shapes of the vowels /i/, /a/, and /u/ with weights that vary as functions of time. The consonant is represented by c(x), an ideal target shape, and wc(x), a so-called coarticulation function. A time varying factor k(t) represents the degree of excursion of the consonantal gesture. Vocal tract shapes measured from x-ray motion pictures of a set of Swedish vowel-consonant vowel utterances compare well with shapes generated by the formula. This result is consistent with our earlier conclusions about coarticulation, viz., that the vowel and consonant gestures are largely independent at the level of neural instructions.

Coarticulation · Consonant · Formant · Mid vowel · Relative articulation · Speech recognition · Vocal tract · Vowel · Computer Science · Mathematics · Neural Networks and Applications · Phonetics and Phonology Research · Speech Recognition and Synthesis