Research on voice conversion based codebook and GMM

Wei-chao Xie, Linghua Zhang
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引用次数: 2

Abstract

Voice conversion (VC) is a technique used in order to change the personality characteristics of a source speaker's voice into the target speaker's, while preserving the original semantic information. This paper mainly studies a method of voice conversion with better quality by codebook. Firstly, personality parameters of both source and target speaker are time aligned to create the source and target codebook. Then compare the parameters which to be converted with the source codebook. If they are near enough, the corresponding parameters of target codebook are regarded as the converted parameters. Otherwise, we will use GMM to realize the conversion of LSF parameters and get residual excitation signal by pitch frequency estimated from converted LSF parameters. This method is better than the conversion only using GMM.
基于码本和GMM的语音转换研究
语音转换是在保留原说话人语音的语义信息的前提下,将原说话人的个性特征转换成目标说话人的语音的一种技术。本文主要研究了一种利用码本实现高质量语音转换的方法。首先,对源说话人和目标说话人的个性参数进行时间对齐,生成源和目标码本。然后将要转换的参数与源代码本进行比较。如果足够接近,则将目标码本的相应参数作为转换后的参数。否则,我们将使用GMM实现LSF参数的转换,并通过转换后的LSF参数估计出的俯仰频率得到剩余激励信号。该方法优于仅使用GMM的转换。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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