Dynamical analysis of the F0 entrainment in chorus singing Through stochastic phase plane

与独唱不同，合唱中的演唱行为受到其他歌手的影响，因此，声学特征可能与独唱不同。从歌唱行为的“娱乐”角度分析合唱中歌手之间的互动。首先，建立了F0动力学模型，即合唱中唱腔基频的动态特性。模型参数的估计采用最陡体面法。在合唱中歌唱的声音的F0动态特征是参数化的。初步实验还表明，使用我们的模型参数可以正确识别经验丰富的歌手和新手歌手，因为他们的娱乐行为有显著差异。通过对合唱过程中F0娱乐性的分析，验证了该模型能较好地表征歌唱者个体特征。

Unlike solo singing, singing behavior in a chorus is affected by other singers, therefore, acoustical characteristics may differ from that of solo singing. Such interaction between singers in a chorus is analyzed from the view point of ‘entrainment’ in singing behavior. As the first step, a model of F0 dynamics, i.e., the dynamic properties of fundamental frequency of singing voices in chorus is studied. The model parameters are estimated using a steepest decent method. The characteristics of the F0 dynamics of a voice singing in a chorus are parameterized. Preliminary experiments also show that experienced and novice singers can be correctly identified using the parameters of our model, because their entrainment behaviors are significantly different. It is confirmed that the our model can properly characterize individual singers by analyzing F0 entrainment during chorus singing.