There are three features of Chinese tone contour.
汉语声调的曲拱特征有三。
In a mandarin tone recognition system, the parameter is usually pitch contour. But the tone can also be partly characterized by pitch difference, energy and energy difference.
普通话声调识别参数除常用的基音轮廓外，基音的一阶差分、能量及能量的一阶差分等也具一定的声调特征。
Improves uneven skin tone, reduces yellowish skin and carves out a sharp and beautiful face contour while prevents melanin formation and blocks environmental irritation.
能调整肤色不均、暗黄现象，勾勒面部轮廓，形成层次分明的靓丽脸庞，同时阻隔外界刺激因素，抑制黑色素形成。
Downstep in pitch contour of Mandarin Chinese is examined using subtly designed sentences, by controlling tone combinations.
采用设计特定声调组合的实验室语句的方法，研究了汉语普通话语调降阶的规律。
Downstep in pitch contour of Mandarin Chinese is examined using subtly designed sentences, by controlling tone combinations.
采用设计特定声调组合的实验室语句的方法，研究了汉语普通话语调降阶的规律。
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