Went looking for audio samples, here's some from one of the researchers:
http://www.zhizheng.org/demo/is15_mte/demo.html http://www.zhizheng.org/demo/dnn_tts/demo.html
http://www.zhizheng.org/demo/is15_mte/demo.html http://www.zhizheng.org/demo/dnn_tts/demo.html