Many people have contributed to the publication of this book.
I sincerely express my thanks to Professors Yang Yixian and Niu Xinxin, my mentors in the research area of information hiding at Beijing University of Posts & Telecommunications, for writing a section of the book, and for putting forward many valuable suggestions to improve the book.
I really appreciate my research team member Mr. Yang Wei at Beijing University of Posts & Telecommunications, who completed the analysis-by-synthesis (ABS) research and implementation of speech coding, and made a great contribution to the core algorithm in this book.
I would like to express my thanks to Associate Professor Ms. Ma Lan at Civil Aviation University of China, who made a great contribution to the information hiding model and analysis of speech coding standards.
I am truly indebted to Professor Wang Jian, Professor Zhang Yanling, Professor Yin Hengguang and Dr. Ma Yuzhao at Civil Aviation University of China, for improving the language of the book.
The input from anonymous reviewers of the book is also appreciated.
I want to very much thank my team members, lecturer Ms. Lei Jin and Mr. Yue Meng, for their strong support in every aspect.
I am grateful to my graduate students, Mr. Wang Chen and Ms. Liu Wanhui, for the simulation experiments (using MATLAB) in VoIP that are included in this book, and for their work on some sections of the book.
I thank my graduate students Ms. Cao Haijuan and Ms. Zhao Ting, for preparing the figures included in
Chapters 2,
3,
8, and
9.
I thank my lab colleagues, Mr. Yang Wei, Dr. Bai Jian, and Dr. Yang Yu, for their kind permission to reproduce their figures in the book.
I am grateful to Ms. Chen Jing, Technical Editor of the Science Press on Information Technology, for helpful comments on the organization of the book, and for her patience and meticulous work on improving the book.
I thank the editor Mr. Zhang Pu at Science Press for getting in touch with me early, and helping me to complete the proposal and evaluation of the book.
I am indebted to my graduate students, Ms. Cao Haijuan and Ms. Ma Shaopu, for their help in checking the typos in all chapters and the references.
I thank Professor Ms. Han Ping, the Dean of School of Electronics & Information Engineering, Civil Aviation University of China, for approving and providing financial aid for the publication of the book.
I thank my colleagues in the School of Electronics & Information Engineering, Civil Aviation University of China, for their selfless assistance and sincere concern.
I also want to extend my sincerest thanks to everyone who supported me during my time as an author.
I am deeply grateful to the China National Science Foundation and Tianjin Natural Science Foundation. This work is partly financially supported by the China National Science Foundation (No. 61170328), Tianjin Natural Science Foundation (No. 12JCZDJC20900, U1333116), the Fundamental Research Funds for the Central Universities-Civil Aviation University of China (CAUC) under grant 31122013P007, 3122013D003, and 3122013D007, the Civil Aviation Science and Technology Innovation Fund in 2013, the research laboratory construction funds of Civil Aviation University of China (CAUC) in 2014-2016, and the postgraduate courses construction funds of Civil Aviation University of China (CAUC) in 2013 under grant 10501034.