Journal article
Fundamental Frequency Stability in Functional Dysphonia
Acta oto-laryngologica, Vol.113(3), pp.439-444
05/01/1993
DOI: 10.3109/00016489309135841
PMID: 8517151
Abstract
Functional dysphonia is a term applied to voice disorders for which there is an absence of apparent structural change in the larynx. The aim of this work was to investigate how functional dysphonia may differ acoustically from other types of dysphonia. Fundamental frequency profiles for steady vowels were generated using a software program called GLIMPES (Glottal Imaging by Processing External Signals). The fundamental frequency variations were found to be unimodal in normal individuals. In contrast, the variations for dysphonic patients were sometimes bi-modal or multi-modal due to the presence of subharmonics or low-frequency modulations. The appearance of these patterns was generally related to the severity of the dysphonia rather than to its etiology.
Details
- Title: Subtitle
- Fundamental Frequency Stability in Functional Dysphonia
- Creators
- M. N. Kotby - Ain Shams UniversityI. R. Titze - University of IowaM. M. Saleh - Ain Shams UniversityD. A. Berry - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Acta oto-laryngologica, Vol.113(3), pp.439-444
- Publisher
- Informa UK Ltd
- DOI
- 10.3109/00016489309135841
- PMID
- 8517151
- ISSN
- 0001-6489
- eISSN
- 1651-2251
- Number of pages
- 6
- Language
- English
- Date published
- 05/01/1993
- Academic Unit
- School of Music; Communication Sciences and Disorders
- Record Identifier
- 9984719566602771
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