AI Article Synopsis
- The study investigates how unilateral vocal cord paralysis (VCP) affects voice quality by comparing the acoustic properties of 18 VCP patients to 72 normal volunteers using Praat software.
- Results showed significant differences in jitter, shimmer, and noise-to-harmonics ratios between VCP patients and matched controls, but no differences in fundamental frequency and intensity were found.
- This research highlights the effectiveness of Praat as a free and accessible tool for clinicians to obtain objective voice analysis data in VCP patients.
Article Abstract
Unilateral vocal cord paralysis (VCP) affects the objective properties of voice by diminished neurologic control and degenerative changes in laryngeal tissue. The goal of this study was to compare the acoustic parameters of VCP patients with control volunteers using the software Praat. Acoustic analysis results of 18 unilateral VCP patients were compared with age and sex matched 72 normal adult volunteers. Comparison of acoustic analysis results of male and female VCP patients with their age and sex matched control groups revealed statistically significant difference in jitter, shimmer, and noise-to-harmonics ratio values (P < 0.01) in both groups. There were no differences in mean fundamental frequency and intensity values. We conclude that these differences were in accordance with the results obtained by commercially available voice analysis programs. This study reflects the first results obtained with Praat software in VCP patients. Using the software Praat, is free and easy, that supports the clinician to rely on objective scientific data.
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| http://dx.doi.org/10.1007/s00405-006-0179-7 | DOI Listing |
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