Software Realization And DSP Simulation Of AVS-M Decoder

AVS is framed by Chinese Acdemy of Sciences, which taked the lead, it is the second source-coding standard and has independence of intellectual property rights. With the development of computer technique, network technique, multimedia technique becomes the most important component as theinformation in communication. For example, the digital TV, network video communication, mobile TV become prevalent now, and indicate the progress of our society .AVS is audio and video standard of china with our technique property right. Its poformance is higher than MPEG-2 standard, and corresponds to H.264. In the domain of video and audio, the development of the mutimedia industry is restricted by the high expense property right of MPEG-2 and H.264, so it is necessary to develop our video and audio standard.AVS-M is the Part 7 of AVS .It is for the moving multimedia video, network meeting and mobile TV. On the one hand, Influenced by the bandwith and fluctuate of the net, a high performance of video compression should be chosen to guarantee that the multimedia flow can be passed via the network. On the other hand, the capability of the CPU is restricted, but the speed of decoder should be fast enough to finish real-time code and decode. Choosing the high performance video decoder and encoder is the key for success of the multimedia operation.The main task of this paper is to analyze the shortcoming of reference software, design the decoder software of AVS-M, and optimize it. The decode speed of our software is 3-5times compared to the referenced software WMA3.3a.And we also plant the software on CCS, and by this, the decode speed will highly mended. Although the future of AVS-M is not lucidity, but as academic research, studies AVS-M is a good exercise.