Journal article
Comparison of acoustic voice perturbation measures among three independent voice laboratories
Journal of speech and hearing research, Vol.34(4), pp.781-790
08/1991
DOI: 10.1044/jshr.3404.781
PMID: 1956185
Abstract
The purpose of this study was to compare jitter and shimmer data measured with three different analysis systems, the Visi-Pitch PC system (Pine Brook) and two systems based on minicomputers (Chicago and Denver), as a preliminary step toward establishing recording and analysis standards. The results show that, although similar hardware and software used at independent laboratories can yield similar findings, differences in recording hardware as well as recording and analysis procedures can result in important differences in perturbation findings. Jitter measurements obtained with the Visi-Pitch were not consistently in good agreement with jitter measurements obtained from the minicomputer systems due, in part, to an interaction between the Visi-Pitch internal filter selected during the recording process and the novel method of pitch period determination used in the Visi-Pitch. Magnitude of shimmer measurements differed between the two minicomputer systems, in part because of differences in amplitude resolution of the A/D converters and recording noise. The correlation between the two shimmer data sets was relatively high, however, indicating that relative changes across utterances were comparable in spite of magnitude differences.
Details
- Title: Subtitle
- Comparison of acoustic voice perturbation measures among three independent voice laboratories
- Creators
- M P Karnell - University of Chicago Medical Center, Otolaryngology-Head and Neck Surgery, IL 60637R S SchererL B Fischer
- Resource Type
- Journal article
- Publication Details
- Journal of speech and hearing research, Vol.34(4), pp.781-790
- DOI
- 10.1044/jshr.3404.781
- PMID
- 1956185
- NLM abbreviation
- J Speech Hear Res
- ISSN
- 0022-4685
- Publisher
- United States
- Grant note
- R01 DC00387 / NIDCD NIH HHS
- Language
- English
- Date published
- 08/1991
- Academic Unit
- Communication Sciences and Disorders; Craniofacial Anomalies Research Center; Otolaryngology
- Record Identifier
- 9984007190102771
Metrics
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