Scherer R C, Arehart K H, Guo C G, Milstein C F, Horii Y
Department of Communication Disorders, Bowling Green State University, Ohio 43403, USA.
J Voice. 1998 Mar;12(1):21-30. doi: 10.1016/s0892-1997(98)80072-6.
This study was primarily motivated by the need to establish the correspondence between auditory abilities and laryngeal function. Just noticeable differences (JNDs) were obtained for the open quotient and speed quotient of the glottal flow waveform. The quotients were synthesized for both the glottal flow alone, and for the output pressure signal after the glottal flow signal was applied to the synthesis vocal tract for the vowel /a/. Six adult men and five adult women, all teachers of singing, participated as listeners. An adaptive auditory listening procedure was used to estimate JNDs for the four types of stimuli. The group average JND values were as follows. For the standard open quotient value of .6000, JND = 0.0264 (SD = .010) for the glottal flow and JND = 0.0344 (SD = .020) for the output pressure. For the open quotient, there was no statistically significant difference between genders or between the types of signals. For the standard speed quotient value of 2.000, JND = 0.154 (SD = .043) for the glottal flow and JND = 0.319 (SD = .167) for the output pressure. For the speed quotient, there was no statistically significant difference between genders, but the difference between types of stimulus (glottal flow versus output pressure) was significant (p < .006). The variance among the JND values was significantly larger for the output pressure stimuli compared to the glottal flow stimuli for both the open quotient and the speed quotient.
本研究的主要动机是需要确定听觉能力与喉部功能之间的对应关系。获得了声门气流波形的开放商和速度商的恰可察觉差异（JND）。这些商数分别针对单独的声门气流以及将声门气流信号应用于合成声道以发出元音/a/后的输出压力信号进行了合成。六名成年男性和五名成年女性，均为歌唱教师，作为听众参与了研究。采用自适应听觉聆听程序来估计四种类型刺激的JND。群体平均JND值如下。对于标准开放商值0.6000，声门气流的JND = 0.0264（标准差 = 0.010），输出压力的JND = 0.0344（标准差 = 0.020）。对于开放商，性别之间或信号类型之间没有统计学上的显著差异。对于标准速度商值2.000，声门气流的JND = 0.154（标准差 = 0.043），输出压力的JND = 0.319（标准差 = 0.167）。对于速度商，性别之间没有统计学上的显著差异，但刺激类型（声门气流与输出压力）之间的差异显著（p < 0.006）。对于开放商和速度商，输出压力刺激的JND值之间的方差相比声门气流刺激显著更大。
