Development of Continuous Voice Morphing Using Separated Vocal TractArea Functions, Glottal Source Waves, and Prosodic Features

在这个项目中，我们已经开发了一个灵活的语音变形方法，这是基于转换使用的线性组合的声道面积函数估计从语音信号和目标上实现的连续性的语音身份的整体插值区域。该方法的主要特点是：（1）将声道共鸣特征与声门源波特征分离;（2）声道共鸣与声门源波特征独立变形;（3）基于DCT域的韵律特征转换方法。我们已经建立了一个变形系统，从所提出的方法构建提高了连续性的语音身份和语音质量的中间变形率。

In this project, we have developed a flexible voice morphing method, which is based on a conversion using a linear combination of the vocal tract area functions estimated from speech signals and targeted on realization of the continuity of the phonological identity of the overall interpolated area. The main features of the method are,1) to separate characteristics of the vocal tract resonances from those of glottal source waves,2) independent morphing of the vocal tract resonances and glottal source wave characteristics, and 3) conversion method of prosodic features based on DCT(digital cosinetransform) domain. We have established that a morphing system constructed from the proposed method improves the continuity of the phonological identity and the speech quality in the intermediate morphing rate.