Xiaochen Wang

Personal profile:

     Wang Xiaochen, born in 1981, doctor, lecturer, IEEE member. In 2003, he obtained a bachelor's degree in cartography and geographic information system of Wuhan University. He has studied for a master's degree in communication and information system from the school of remote sensing of Wuhan University since 2004, and obtained a doctor's degree in engineering from the national multimedia software engineering technology research center in 2011. He was elected to Wuhan University in 2009. The research direction is audio and video signal processing, focusing on quantization and stereo coding technology. Since 2011, the applicants have started to study 3D audio and video processing technology, including spatial information extraction and expression of 3D audio and video signals, signal coding and other aspects. Since 2012, Wang Xiaochen, as one of the main technical directors, has participated in a series of national key scientific research projects, such as "Research on basic theory and key technology of 3D audio", "basic theory and key technology of mobile audio codec" and "3D sound field technology of mobile terminal", which are key projects of NSFC, and presided over national youth fund and Wuhan The research results of the project have been published in several top audio conferences such as AES, icassp and other domestic and foreign journals, and 21 papers have been published, including 3 SCI indexes and 11 EI indexes. A total of 37 national invention patents have been applied for, of which 16 have been authorized, all of which are concentrated in audio codec and 3D audio related fields, and the number of patents applied and authorized in 3D audio field ranks first in China. In terms of standardization work, Wang Xiaochen has participated in the formulation of AVS audio standard of national digital video and audio coding technology working group since 2005, and has participated in nearly 40 AVS standard working meetings. As the main responsible person, Wang successfully hosted 6 AVS audio standard meetings in Wuhan University, and participated in the formulation of national standard GB / T 20090.10-200y Advanced audio and video coding part 10: mobile voice and audio coding "and" GB / T 20090.3-200y advanced audio and video coding part 3: audio ". At present, three national technical standard documents and one international technical standard document have been completed, and one national technical standard is being formulated. More than 50 national standard proposals have been submitted and the avs-p10 is proposed S framework, avs2 Part 3: Audio efficient speech coding technology framework and other proposals constitute the important support of AVS standard, and are one of the main contributors of AVS audio standard. As the joint audio team leader and the head of avs-p10 code group, he has the standard document editing qualification recognized by the state, and fully participates in the standard requirements analysis, framework determination, proposal collection, technical research, algorithm optimization, performance test, compliance test, submission for approval, etc., and has cooperated with Peking University, Chinese Academy of Sciences, Tsinghua University, Communication University of China, Huawei Company, etc Huayang general (the largest vehicle manufacturer in China), Institute of electronic technology standardization, SamSung company, Singapore Institute of information and communication, GMU University and other first-class high-tech enterprises, scientific research institutions and institutions of higher learning at home and abroad have established good scientific research cooperation relations and carried out extensive cooperation in the field of audio coding and decoding. Academic part time: expert of overall group of national digital video and audio coding technology standard working group, audio joint leader of national digital video and audio coding technology standard working group, IEEE SA 1857wg, editor of international standards working group, expert of Shenzhen Key Laboratory of 3D multimedia information and data analysis and processing

Projects presided over and participated in:

   From 2009 to 2012, He participated in the research of "basic theory and key technology of mobile audio codec" (60832.022 million) as a key project of NSFC. This project mainly studies audio coding and decoding technology for mobile network environment, including spectrum spread technology, spatial audio coding technology, lattice vector quantization technology and scalable coding technology. Responsible for and participated in the research of spatial audio coding and lattice vector quantization. 2. From 2011 to 2012, he presided over the "basic theory and key technology of mobile audio codec" (201150431104, 140000) of Wuhan Youth Science and technology project. Adaptive psychophysiological measurement method is used to measure the critical perceptible difference (JND) of ILD in full frequency band and between ear intensity difference cues. Based on the analysis of JND variation rule of ILD cues, an ILD parameter quantization method for 5.1 channel signal is proposed, which improves the coding effect of traditional multi-channel coding. Three Since 2013, the applicant has participated in the key project of National Natural Science Foundation of China, "Research on basic theory and key technologies of 3D audio" (61231015315.15 million). The project is aimed at the challenges such as the lack of distance expression ability of 3D audio system, the simplification method of loudspeaker group of 3D audio system remains in the empirical stage, and the demand for massive data storage and transmission resources is doubled The key technologies of efficient expression and reconstruction of 3D audio information are studied. Four Since 2013, he has presided over the National Natural Science Foundation of China Youth Project "Research on Key Technologies of spatial orientation information perception coding in 3D audio" (6120, 1169, 250000). Aiming at the problem that the existing multi-channel coding technology lacks the consideration of spatial information perception characteristics of sound, and the spatial information perception distortion is too large in pursuit of compression rate, based on the existing spatial auditory experiments, the project will The traditional perceptual entropy theory extends to the calculation of spatial perceptible information, establishes the perceptible spatial information measurement model, and finally constructs the spatial information coding framework based on perception, which provides technical support for solving the performance bottleneck of current 3D audio coding. 5. Since 2015, the applicant will be the sub project leader