Acoustic analysis of the tremulous voice: assessing the utility of the correlation dimension and perturbation parameters
Identifieur interne : 000862 ( Main/Exploration ); précédent : 000861; suivant : 000863Acoustic analysis of the tremulous voice: assessing the utility of the correlation dimension and perturbation parameters
Auteurs : Julia Maccallum ; Yu Zhang ; Jack JiangSource :
- Journal of communication disorders [ 0021-9924 ] ; 2009.
Abstract
Acoustic analysis may provide a useful means to quantitatively characterize the tremulous voice. Signals were obtained from 25 subjects with diagnoses of either Parkinson's disease or vocal polyps exhibiting vocal tremor. These were compared to signals from 24 subjects with normal voices. Signals were analyzed via correlation dimension and several parameters from the Multi-Dimensional Voice Program (MDVP): percent jitter, percent shimmer, amplitude tremor intensity index (ATRI), frequency tremor intensity index (FTRI), amplitude tremor frequency (Fatr), and fundamental frequency tremor frequency (Fftr). No significant difference was found between the tremor and control groups for ATRI and Fatr. Percent jitter, percent shimmer, FTRI, Fftr, and correlation dimension values were found to be significantly higher in the tremor group than in the control group. We conclude that these parameters may have utility for the clinical quantification of tremor severity and treatment effects.
Url:
DOI: 10.1016/j.jcomdis.2009.09.001
PubMed: 19909966
PubMed Central: 2813418
Affiliations:
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Le document en format XML
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