Kun Liu Jianping Zhang Yonghong Yan High Quality Voice Conversion through Phoneme-Based Linear Mapping Functions with STRAIGHT for Mandarin. 410-414 2007 FSKD (4) http://dx.doi.org/10.1109/FSKD.2007.347 conf/fskd/2007-4 db/conf/fskd/fskd2007-4.html#LiuZY07