pitch contours meaning in English

音高升降曲线

On the method of determing pitch contour and value
关于确定声调调形和调值方法的探讨
Analysis and synthesis of continuous voice pitch contour for improving chinese synthetic speech naturalness
浊声基频轮廓对汉语合成自然度提高的分析与综合
In this paper , a new smoothin approach is presented , in which a searching method is used to get a preferable accurate pitch contour
本文提出了一种通过搜索来得到更精确的基音轮廓的新的基音平滑方法。