tone feature meaning in English

色调特征

Research on tone feature of tone zero in chinese
汉语第零声的声调特征研究
The key is that the tone feature is introduced to be the feature parameter . that is to say , the fundamental frequency , the derivative of fundamental frequency and its derivative are used as the feature parameters
关键技术是引入声调的特征量作为特征参数，利用基频、基频的一阶和二阶差分，作为特征参数，以提高识别率。
Mandarin tone is characterized for tone level and tendency of pitch curve , so head - tail difference and relative tone level rate are determined as tone features for chinese tn - syllable word ; head - tail difference and tone level at the beginning of syllable are determined as tone features of syllable in continuous speech
汉语声调主要由基音曲线的调位高低和走向决定。因此，本文选择头尾差和相对调位比作为三字词音节的声调特征；选择头尾差和音节起点调位作为连续语音中音节的声调特征。