Mixture of factor analyzers using priors from non-parallel speech for voice conversion

• Main Authors: Wu, Zhizheng, Kinnunen, Tomi, Chng, Eng Siong, Li, Haizhou
• Other Authors: School of Computer Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Computer science and engineering
• Online Access: https://hdl.handle.net/10356/102726; http://hdl.handle.net/10220/16436
• Institution: Nanyang Technological University

A robust voice conversion function relies on a large amount of parallel training data, which is difficult to collect in practice. To tackle the sparse parallel training data problem in voice conversion, this paper describes a mixture of factor analyzers method which integrates prior knowledge from non-parallel speech into the training of conversion function. The experiments on CMU ARCTIC corpus show that the proposed method improves the quality and similarity of converted speech. With both objective and subjective evaluations, we show the proposed method outperforms the baseline GMM method.