Title
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The evaluation of voice quality via signal typing in voice using narrowband spectrograms
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Author
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Abstract
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Objective: Traditionally, voice quality is evaluated by auditory-perceptual judgment but objective-acoustic analyses are also valid tools. Spectrography is a part of objective-acoustic analyses and is used since around 50 years. Recently, Sprecher et al. (2010) designed a new classification scheme for signal typing in voice using narrowband spectrograms. The present study aimed to explore the external validation between these 2 methods in a larger dataset. Materials and Methods: In total 300 voice samples were used based on the vowel [a:], in which n = 270 had various degrees of dysphonia and n = 30 were vocally normal. All voice samples were evaluated by 7 speech-language therapists using the RBH-scale and 2 judges analyzed the signal typing in voice using narrowband spectrograms. Results: The intra-and inter-rater reliability of all RBH parameters was fair in average (kappa = 0.234-0.383) but the rater reliability was moderate between the 2 judges rating signal typing in voice (kappa = 0.457). A strong concurrent validity was identified between the signal typing in voice using narrowband spectrograms and auditory-perceptual judgment of hoarseness and breathiness (H: r = 0.746, p = 0.000; B: r = 0.746, p = 0.000) but only fair in roughness (r = 0.370, p = 0.000). Conclusion: The present results confirmed the results of Sprecher et al. (2010) and it might be meaningful to benefit signal typing in voice using narrowband spectrograms on sustained vowels as a valid complement in the evaluation of hoarseness and breathiness for clinical utility and research. |
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Language
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English
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Source (journal)
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Laryngo-Rhino-Otologie. - Stuttgart
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Publication
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Stuttgart
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2016
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ISSN
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0935-8943
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DOI
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10.1055/S-0035-1559678
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Volume/pages
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95
:2
(2016)
, p. 105-111
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ISI
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000370296200006
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Pubmed ID
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26468672
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Full text (Publisher's DOI)
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