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Design and Execution of Multiplexed Voices Coding Module Based on BF533

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Tutor: ZhangJiangZuo
School: Zhejiang University of Technology
Course: Communication and Information System
Keywords: multiplexed voices coding,G.729A,ADSP-BF533,uClinux
CLC: TN912.3
Type: Master's thesis
Year:  2011
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Abstract:
In recent years, as the development of communication, electron and computer technology, the applications of network has been more and more prevalently used into people¡¯s daily lives, and network monitoring and management systerm is one of them. It drastically changes previous monitoring mode, and incorporates information transportation, monitoring and management, and connects other networks based on IP protocol, and this makes that people can control all of things in the range of their own home or a small area. Because the technology of network in our country was used too late, the applications of network monitoring are rare. But as the rising of living condition and the pursue to life qulity, there will be needs of the systerm to the domins of education security and management, community security and production management and so on to help people study and work more efficiently.This dissertation has the background of network monitoring and management systerm, and the emphasis is bringing forward a design scheme of multiplexed voices coding module. The prime study object is the G.729A voice coding standard which has low complication, low time lapse and high speech qulity. The voices coding module development platform is BF533 processor which is from the Blackfin series and has high ratio between capability and price.The dissertation first analizes the principle of G.729A and has the predigestion study; Then, according the study to BF533 processor, designs the software and hardware of multiplexed voices coding module, and because of the requirement of real-time, optimizes the G.729A on algorithm and code level; At last, the dissertation adequately uses the assemble feature of BF533 to primarily execute the module based on the uClinux operation systerm.
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