Laukkanen Anne-Maria, Rantala Leena
Speech and Voice Research Laboratory, Faculty of Social Sciences, Tampere University, Tampere, Finland.
Folia Phoniatr Logop. 2022;74(1):62-69. doi: 10.1159/000514796. Epub 2021 Mar 30.
The Acoustic Voice Quality Index (AVQI) is a correlate of dysphonia. It has been found to differentiate between dysphonic and normophonic speakers and to indicate the effects of voice therapy. This study investigates how the AVQI reacts towards creak and strain, which are common in normophonic speakers.
The material was obtained from an earlier study on 104 Finnish female university students (mean age 24.3 years, SD 6.3 years) with no known pathology of voice or hearing and a perceptually normal voice (G = 0 in GRBAS), who were recorded while reading aloud a standard text and sustaining the vowel [a:]. Perceptual analysis for the amount of creak and strain was carried out by 2 expert listeners. In this study, the AVQI v03.01 was analyzed and correlated with perceptual evaluations. Samples with low and high amounts of creak and strain were compared with t tests.
On average, the AVQI was below the threshold value of dysphonia in the Finnish population. The AVQI (ρ = 0.35, p = 0.000) and its subparameters, smoothed cepstral peak prominence (CPPS; ρ = -0.35, p = 0.000) and harmonics-to-noise ratio (HNR; ρ = -0.30, p = 0.002) showed low but significant correlations with creak. Strain had low but significant correlations with spectral Slope (ρ = 0.38, p = 0.000) and Tilt (ρ = -0.40, p = 0.009). The AVQI was lower (better) in samples that were evaluated as having a high amount of strain, but the difference was not significant. Only CPPS differentiated significantly between low and high amounts of creak.
The AVQI does not seem to differentiate between high and low amounts of creak and strain in normophonic speakers.
声学嗓音质量指数（AVQI）是嗓音障碍的一个相关指标。已发现它可区分嗓音障碍者和嗓音正常者，并能显示嗓音治疗的效果。本研究调查AVQI对正常嗓音者中常见的嘎吱声和紧张度的反应。
材料取自一项早期针对104名芬兰女大学生（平均年龄24.3岁，标准差6.3岁）的研究，这些学生无已知的嗓音或听力病理问题，且嗓音在感知上正常（GRBAS中G = 0），她们在大声朗读一篇标准文本并持续发元音[a:]时被录音。由2名专业听众对嘎吱声和紧张度的程度进行感知分析。在本研究中，对AVQI v03.01进行分析并与感知评估相关联。使用t检验比较嘎吱声和紧张度含量低和高的样本。
平均而言，芬兰人群的AVQI低于嗓音障碍的阈值。AVQI（ρ = 0.35，p = 0.000）及其子参数，平滑的谐波峰值突出度（CPPS；ρ = -0.35，p = 0.000）和谐波噪声比（HNR；ρ = -0.30，p = 0.002）与嘎吱声呈低但显著的相关性。紧张度与频谱斜率（ρ = 0.38，p = 0.000）和倾斜度（ρ = -0.40，p = 0.009）呈低但显著的相关性。在被评估为紧张度高的样本中，AVQI较低（较好），但差异不显著。只有CPPS在嘎吱声含量低和高之间有显著差异。
AVQI似乎无法区分正常嗓音者中嘎吱声和紧张度的高低。
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