15th International Congress of Phonetic Sciences (ICPhS-15)

Barcelona, Spain
August 3-9, 2003

An Electrolaryngographic Study of Dysphonic Portuguese Speakers

Isabel Guimarães (1), Evelyn Abberton (2)

(1) Escola Superior de Saude do Alcoitao, Portugal
(2) University College London, UK

The aims of this research were: (a) normative, to establish tentative normative data on the mean fundamental frequency (F0) for Portuguese speakers; (b) comparative, to investigate whether statistically significant differences exist between two groups of different voice conditions on the mean F0, and (c) predictive, to test for the variables that best predict the mean F0 variance. Electrolaryngographic (ELG) data was obtained from 109 subjects (52 dysphonics and 57 controls) during the production of sustained vowels, oral reading and conversation.
   Results show that the normative data proved to be a valuable reference. Also, within the limitations of the study, overall the dysphonic exhibited lower F0 than controls for all speaking conditions, although this contrast was not statistically significant. Additionally, between 61 and 73% of the mean F0 variance is explained by a combination of four or five variables for all speech tasks.

Full Paper

Bibliographic reference.  Guimarães, Isabel / Abberton, Evelyn (2003): "An electrolaryngographic study of dysphonic Portuguese speakers", In ICPhS-15, 2185-2188.