论文部分内容阅读
本文比较了两位彝语发音人(1男1女)朗读词中辅音的谱参数(谱重心和离散度),结果如下:清化与非清化的鼻音/边音的谱重心和离散度区别明显,清化音比非清化音的谱重心和离散度升高约为3倍至5倍;用谱重心和离散度可把鼻音与边音大致分开;清擦音的谱重心和离散度远大于浊擦音,大约为两倍以上。可以用谱重心值将清擦音按照发音部位划分为两组,谱重心小于2000Hz为后组,包括[h]和[x],谱重心大于3500Hz为前组,包括[■],[f],[■],[s]。如果以谱重心和离散度为坐标轴的两个维度,则擦音s的谱分布范围最大,f的谱相对位置最不稳定,其他清擦音的谱特征相对位置比较集中。当h位于词中时,受到前音节元音的影响而发音弱化,其谱重心和离散度都急剧减小。离散度是比谱重心更好、更稳定的区分清擦音的谱特征参数。
In this paper, the spectral parameters (spectral center of gravity and dispersion) of consonants in two spoken Yi speakers (1 male and 1 female) are compared. The results are as follows: The spectral center of gravity and dispersion of the nasal / rimmed sounds The difference is clear. The center of gravity and dispersion of Qinghua sound is about 3 times to 5 times higher than that of non-Qinghua tones. Nasal and side notes can be roughly separated from the spectrum center of gravity and dispersion. Degree far greater than the voiced fricative, about more than twice. The center of gravity can be divided into two groups according to the pronunciation site. The center of gravity of the spectrum is less than 2000Hz for the latter group, including [h] and [x]. The center of gravity of the spectrum is greater than 3500Hz, , [■], [s]. If spectral center of gravity and dispersion are the two dimensions of the coordinate axis, then the range of spectral distribution of fricative s is the largest and the relative position of f is the most unstable. The relative positions of spectral features of other fricatives are more concentrated. When h is located in the word, the phonetic pronunciation is weakened by the vowel of the former syllable, and its spectral center of gravity and dispersion sharply decrease. Dispersion is better and more stable than the centroid of the spectrum in discriminating the spectral features of the scrubs.