Spectral-Cepstral Estimation of Dysphonia Severity: External Validation
Spectral-Cepstral Estimation of Dysphonia Severity: External Validation
复制标题
DOI：
10.1177/000348941312200108
复制
发表时间：
2013-01-01
影响因子：
1.4
通讯作者：
Stojadinovic, Alexander
中科院分区：
文献类型：
--
作者：
Awan, Shaheen N.;Solomon, Nancy Pearl;Stojadinovic, Alexander
目的：目前的研究应用了一种声学算法，结合倒谱和频谱分析的措施，倒谱发音困难指数（CSID），试图从外部验证CSID作为发音困难严重程度的声学估计。方法：相关性（Pearson's r）之间的CSID和训练的发音者感知的严重程度，如在声音的一致性听觉感知评价（CAPE-V）上评定的）结果：在CAPE-V句子和元音之间计算的平均CSID值与感知的总体严重程度的中位数之间存在很强的相关性（r = 0.82; p < 0.001）。这些样本的CSID值与其相应的发声障碍严重程度的认知-知觉等级没有显著差异（CSID：平均值，15.54，SD，16.63; CAPE-V严重程度：平均值，17.33，SD，13.61; p = 0.16）。结合倒谱和频谱分析测量的声学算法的独立测试（CSID）证实了CSID与总体语音质量的感知评级的强相关性。这项研究提供了外部验证的CSID作为一个强大的相关性发声困难的严重程度，由训练有素的听众。
Objectives: The current study applied an acoustic algorithm incorporating measures from cepstral and spectral analyses, the Cepstral Spectral Index of Dysphonia (CSID), in an attempt to externally validate the CSID as an acoustic estimate of dysphonia severity.Methods: Correlation (Pearson's r) between the CSID and trained listener-perceived severities as rated on the Consensus Auditory-Perceptual Evaluation of Voice (CAPE-V) was calculated from sentence and sustained vowel samples from 56 patients before or after they underwent thyroid surgery.Results: A strong correlation was identified between the mean CSID values calculated across CAPE-V sentences and vowels and the median rating of perceived overall severity (r = 0.82; p < 0.001). The CSID values did not differ significantly from their corresponding auditory-perceptual ratings of dysphonia severity for these samples (CSID: mean, 15.54, SD, 16.63; CAPE-V Severity: mean, 17.33, SD, 13.61; p = 0.16).Conclusions: Independent testing of an acoustic algorithm incorporating measures from cepstral and spectral analyses (the CSID) confirmed a strong correlation of the CSID to perceptual ratings of overall voice quality. This study provides external validation of the CSID as a robust correlate of dysphonia severity as rated by trained listeners.