嗓音质量指数在汉语普通话人群中的效度和诊断价值
Validity and Diagnostic Accuracy of Acoustic Voice Quality Index in Mandarin Chinese Language
郭婷婷;李革临;侯倩;钟静婷;任慧;张驰
1:首都医科大学附属北京友谊医院耳鼻咽喉头颈外科
摘要【Abstract] Objective To study the validity of acoustic voice quality index (AVQI) in Mandarin Chinese lan- guage, to investigate the accuracy of AVQI in discriminating normal and dysphonic voice, and the accuracy in discriminating across the perceptual categories of dysphonia severity. Methods This study included 59 subjects with normal voice and 217 subjects with dysphonic. Voice samples of sustained vowel /a/ and continuous speech were collected. AVQI was calculated using AVQI (v02. 06) script in Praat software. G score of GRBAS system was assessed by 5 raters and the mean value was used in following analysis. Spearman correlation coefficient was calculated. ROC curves were drawn to evaluate the accuracy of discriminating normal and dysphonic voice, and discriminating across the perceptual categories of dysphonia severity. Results The correlation coefficient of AVQI and Gmean was 0. 756 (P<0.001).When discriminating normal and dysphonic voice at Gmean=0.2，AUC=0.849 and threshold was 2. 905. When discriminating them under clinical diagnosis, AUC was 0. 788 and threshold was 3. 18. When discriminating voice of different severity, AUC and threshold of normal vs slight were 0.770 and 1.985 respectively. Those of slight vs moderate were 0. 755 and 4. 17, and those of moderate vs severe were 0. 799 and 6.36 respectively. Conclusion The AVQI is an easy-to-use and quick tool for the objective measure of overall voice quality in Mandarin Chinese language. It could discriminate normal and dysphonic voice, and the voice with different dysphonia severity to a certain extent.
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