Brunner Jana, Fuchs Susanne, Perrier Pascal
Humboldt-Universitat zu Berlin, Berlin, Germany.
J Acoust Soc Am. 2009 Jun;125(6):3936-49. doi: 10.1121/1.3125313.
In this study the acoustic and articulatory variabilities of speakers with different palate shapes were compared. Since the cross-sectional area of the vocal tract changes less for a slight change in tongue position if the palate is domeshaped than if it is flat, the acoustic variability should be greater for flat palates than for domeshaped ones. Consequently, it can be hypothesized that speakers with flat palates should reduce their articulatory variability in order to keep the acoustic output constant. This hypothesis was tested on 32 speakers recorded via electropalatography (EPG) and acoustics. The articulatory and acoustic variability of some of their vowels and /j/ was measured. Indeed, the results show that the speakers with flat palates reduce their variability in tongue height. There is no such trend in acoustic variability.
在本研究中，对具有不同腭形状的说话者的声学和发音变异性进行了比较。由于如果腭是圆顶形的，那么对于舌头位置的轻微变化，声道的横截面积变化要比腭是扁平形时小，所以扁平腭的声学变异性应该比圆顶腭更大。因此，可以假设，具有扁平腭的说话者应该减少其发音变异性，以保持声学输出恒定。该假设通过对32名通过电子腭图（EPG）和声学进行记录的说话者进行了测试。测量了他们一些元音和/j/的发音和声学变异性。事实上，结果表明，具有扁平腭的说话者会降低其舌高的变异性。在声学变异性方面没有这样的趋势。
