Maryn Youri, Kim Hyung-Tae, Kim Jaeock
Sint-Augustinus General Hospital, European Institute for Otorhinolaryngology-Head & Neck Surgery, Antwerp, Belgium; Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.
Yeson Voice Center, Seoul, Korea.
J Voice. 2016 Sep;30(5):587-94. doi: 10.1016/j.jvoice.2015.06.011. Epub 2015 Aug 25.
The purpose of this study was to explore the criterion-related concurrent validity of two standardized auditory-perceptual rating protocols and the Acoustic Voice Quality Index (AVQI) for measuring dysphonia severity in Korean speech.
Sixty native Korean subjects with various voice disorders were asked to sustain the vowel [a:] and to read aloud the Korean text "Walk." A 3-second midvowel portion of the sustained vowel and two sentences (with 25 syllables) were edited, concatenated, and analyzed according to methods described elsewhere. From 56 participants, both continuous speech and sustained vowel recordings had sufficiently high signal-to-noise ratios (35.5 dB and 37 dB on average, respectively) and were therefore subjected to further dysphonia severity analysis with (1) "G" or Grade from the GRBAS protocol, (2) "OS" or Overall Severity from the Consensus Auditory-Perceptual Evaluation of Voice protocol, and (3) AVQI.
First, high correlations were found between G and OS (rS = 0.955 for sustained vowels; rS = 0.965 for continuous speech). Second, the AVQI showed a strong correlation with G (rS = 0.911) as well as OS (rP = 0.924). These findings are in agreement with similar studies dealing with continuous speech in other languages.
The present study highlights the criterion-related concurrent validity of these methods in Korean speech. Furthermore, it supports the cross-linguistic robustness of the AVQI as a valid and objective marker of overall dysphonia severity.
本研究旨在探讨两种标准化听觉感知评定方案以及声学嗓音质量指数（AVQI）在评估韩语语音中发音障碍严重程度方面与标准相关的同时效度。
60名患有各种嗓音障碍的韩国本土受试者被要求持续发元音[a:]并大声朗读韩语短文“Walk”。根据其他地方描述的方法，对持续元音的3秒中间元音部分以及两个句子（含25个音节）进行编辑、拼接和分析。56名参与者的连续语音和持续元音录音均具有足够高的信噪比（平均分别为35.5 dB和37 dB），因此使用以下方法进行进一步的发音障碍严重程度分析：（1）GRBAS方案中的“G”或等级；（2）嗓音共识听觉感知评估方案中的“OS”或总体严重程度；（3）AVQI。
首先，发现G和OS之间存在高度相关性（持续元音的斯皮尔曼相关系数rS = 0.955；连续语音的rS = 0.965）。其次，AVQI与G（rS = 0.911）以及OS（rP = 0.924）均显示出强相关性。这些发现与其他语言中关于连续语音的类似研究结果一致。
本研究突出了这些方法在韩语语音中与标准相关的同时效度。此外，它支持AVQI作为发音障碍总体严重程度的有效且客观指标的跨语言稳健性。
