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KMID : 1036820200250030738
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Communication Sciences & Disorders
2020 Volume.25 No. 3 p.738 ~ p.749
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Comparison of Acoustic and Auditory-Perceptual Evaluation in Sustained Vowel and Connected Speech by Glottal Closure Pattern in Voice Disorders
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Lee Eun-Jung
Kim Jae-Ock
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Abstract
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Objectives: This study classified voice disorders into hyper-functional (Hyper) and hypo-functional voice disorder (Hypo) by glottal closure pattern and compared acoustic and auditory-perceptual evaluation in sustained vowel and connected speech.
Methods: The participants consisted of 46 patients in the Hyper group and 46 patients in the Hypo group. Data were collected through sustained vowel /a/ and connected speech (reading the “Autumn” paragraph) and were analyzed with cepstral analysis (CPP, mean CPP F0, and L/H ratio) for acoustic evaluation, and GRBAS scales for auditory-perceptual evaluation.
Results: In the acoustic evaluation, CPP was higher in the sustained vowel than in connected speech, however the mean CPP F0 was the opposite. CPP was higher in the Hyper group than the Hypo group and the mean CPP F0 was higher in the Hypo group. In the auditory-perceptual evaluation, the two groups were distinguishable on the B and A scale, but were not different on the R and S scale. In addition, in both groups, the GRBAS scale was significantly negative correlated with CPP and L/H ratio in both sustained vowel and connected speech.
Conclusion: This study revealed that it was possible to identify voice disorders through acoustic and auditory-perceptual evaluation using a combination of sustained vowel and connected speech. These evaluation methods are helpful to discriminate compensatory strategies for glottal incompetency in hypofunctional voice disorder.
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KEYWORD
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Voice disorder, Glottal closure pattern, Sustained vowel, Connected speech, Cepstral analysis, Auditory-perceptual voice evaluation
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