Dejonckere P H, Lebacq J
UCL, Service d'ORL et d'Audio-Phonologie, Bruxelles.
Acta Otorhinolaryngol Belg. 1987;41(6):988-96.
In order to test the value of the harmonic emergence in formant zone of a sustained (a) as a parameter for evaluating hoarseness, a multifactorial acoustical investigation was performed in 10 normal and 22 dysphonic subjects. The parameters were: a subjective evaluation (7-degree-scale) of the extent of the hoarseness by 3 trained specialists the phonation quotient the 0-6 kHz/6-10 kHz energy ratio, computed on a long--time--average--spectrum from a reading of a phonetically selected text the harmonic emergence in the bandwidth of the two first formants of a sustained (a). The harmonic emergence in the formant zone of a sustained (a) seems to be an interesting and complementary parameter, with respect to the previously investigated 0-6 kHz/6-10 kHz energy ratio, for evaluating hoarseness. Both of these parameters demonstrate highly significant differences between normal and pathological voices. Moreover, they show a high degree of correlation both with the subjective evaluation of the severeness of the hoarseness and with the mean transglottic air flow during phonation. The 0-6 kHz/6-10 kHz energy ratio seems to discriminate better in cases of severe dysphonia, while harmonic emergence seems more suitable in milder hoarseness. Both spectral parameters are suitable for automatic analysis.
为了测试持续发“啊”音时共振峰区域谐波出现情况作为评估声音嘶哑参数的价值,对10名正常受试者和22名发声障碍受试者进行了多因素声学研究。参数包括:由3名训练有素的专家对声音嘶哑程度进行主观评估(7级量表)、发声商、从语音选择文本的朗读中计算得到的0 - 6千赫/6 - 10千赫能量比、持续发“啊”音时前两个共振峰带宽内的谐波出现情况。对于评估声音嘶哑而言,持续发“啊”音时共振峰区域的谐波出现情况相对于之前研究的0 - 6千赫/6 - 10千赫能量比似乎是一个有趣且互补的参数。这两个参数在正常嗓音和病理性嗓音之间均显示出高度显著差异。此外,它们与声音嘶哑严重程度的主观评估以及发声时平均声门气流均呈现高度相关性。0 - 6千赫/6 - 10千赫能量比在重度发声障碍情况下似乎区分效果更好,而谐波出现情况在较轻的声音嘶哑中似乎更适用。这两个频谱参数均适用于自动分析。