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| Speaker: | |
| Speech Hearing and Language Research Centre | |
| Date: | Tuesday 9th June 1998 |
| Time: | 11:30am |
| Place: | Seminar Room 357, Building E6A, Macquarie University |
Abstract:
The slope values derived from locus equation data have long been used to infer the degree of coarticulation between a consonant and the adjacent vowel (Krull 1989). To date, however, there has been no empirical support for this assumption based on articulatory data. To address this problem, EPG and acoustic recordings were made of four female speakers of Australian English producing CV utterances. Locus equation analyses were carried out on the acoustic data, and regression analyses on the EPG data. The EPG analysis was based on a total contacts measure at two different time points: one at the consonant midpoint and one at the vowel target. Slope values generated by the two analyses were then compared.
Results suggest that while the locus equation is effective at encoding coarticulatory differences according to place of articulation in (voiced) oral stops, and to a lesser extent nasals and approximants, it is less accurate with regard to (voiced) fricatives. The implications of these findings for a cognitive model of speech production will be discussed briefly.Enquiries: sals@mri.mq.edu.au
| Last modified: June, 1998 |