Fourth International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2005)

Florence, Italy
October 29-31, 2005

Effect of Parkinson’s Disease on Vocal Tremor

L. Cnockaert (1), Jean Schoentgen (1), P. Auzou (2,3), C. Ozsancak (3,4), Francis Grenez (1)

(1) Université Libre de Bruxelles, Department Waves and Signals, Brussels, Belgium
(2) Service d’explorations fonctionnelles neurologiques, Groupe HOPALE, Berk sur Mer, France
(3) EA 2683, CHRU Lille, France
(4) Service de Neurologie, Centre Hospitalier de Boulogne sur Mer, France

Vocal tremor is encountered in different neurological diseases and could be used for their characterisation. In this paper, vocal tremor features have been extracted for speakers with Parkinson’s disease and control speakers. It is shown that Parkinson’s disease has significant effects on vocal tremor features. For speakers with Parkinson’s disease, the average vocal frequency is higher and the vocal tremor frequency is higher. This can be explained by higher vocal tremor components in the frequency band 8-12Hz.

Full Paper (reprinted with permission from Firenze University Press)

Bibliographic reference.  Cnockaert, L. / Schoentgen, Jean / Auzou, P. / Ozsancak, C. / Grenez, Francis (2005): "Effect of Parkinson’s disease on vocal tremor", In MAVEBA-2005, 177-180.