1. iFLYTEK Research, iFLYTEK Co., Ltd., Hefei, China
2. School of Cyber Science and Technology, Beihang University, Beijing, China
3. School of Computer and Artificial Intelligence, Zhengzhou University, Zhengzhou, China
4. School of Microelectronic and Communication Engineering, Chongqing University, Chongqing, China
5. College of Electronic and Information Engineering, Tongji University, Shanghai, China