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Multi-channel Audio Systems Design and Implementation Based on FPGA

Author: CaiLiFei
Tutor: WangZuo
School: Communication University of China
Course: Communication and Information System
Keywords: A frame structure Time-division multiplexing Synchronized timestamp Multi-channel
CLC: TN791
Type: Master's thesis
Year: 2008
Downloads: 188
Quote: 2
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Abstract


Stereo recording and playback format is being replaced by the surround-sound format . Art and technology applications to develop a variety of surround sound technology , the sense of space through appropriate recording and playback for hearing . Research in this area are mainly two types of methods , a sense an analog sound field simulation . Common multi-channel sound reproduction system is the use of design based on the perception of simulation technology . Based on sound field simulation system is rare, because the technical and physical concept is very complicated and requires a deep acoustics and signal processing basic background . The design is based on the sound field simulation of n -channel sound system. n -channel , which is the speaker array technology is usually used because the sound reproduction system based on the sound field simulation technology , in such a system , the number of speakers in between tens and hundreds of far more based on the perception of the multi-channel analog the number of speakers in the system design , the use of the \The speaker array technology used in this design can be a better solution narrow sweet spot Chek has a very practical value , the system in theaters , concert halls , stadiums, squares recording broadcasting system will broad market prospects . Involved in this for the theory to achieve the platform architecture . In this paper , on the basis of the existing hardware platform , the multi - channel audio capture , data frame structure package , multi-channel audio time-division multiplexing , the completion of the preliminary test platform . A detailed description of the format and content of the data transmission for the entire system . The design of the study results include: the data stream transfer of the entire system , Package , access multiplexed with detailed architecture , to achieve a multi-channel audio transmission by multiplexing , initially completed by the time stamp information multiplexer the audio signal processing in synchronization .

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