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MAIN CONTENTS
2014年
1期
45-46,75
,共3页
13kQCELP%智能对线器%码本搜索算法%单片机%DSP%HPI
13kQCELP%智能對線器%碼本搜索算法%單片機%DSP%HPI
13kQCELP%지능대선기%마본수색산법%단편궤%DSP%HPI
13kQCELP%Intelligent line-check device%Codebook search algorithm%MCU%DSP%HPI
智能对线器语音传输系统在编码技术上以13kQCELP为基础，采用分数基音搜索算法和自相关固定码本搜索算法来提高语音处理速度和合成语音质量。在硬件电路上以C8051F020为通信控制核心、以TMS320VC5509A为数据处理核心，并在单片机和DSP之间以HPI模式快速传递数据。仿真分析和语音测试的结果表明，该系统在低编码速率下获得了较高质量的合成语音，能够实现低延时、高效率的语音通信。
智能對線器語音傳輸繫統在編碼技術上以13kQCELP為基礎，採用分數基音搜索算法和自相關固定碼本搜索算法來提高語音處理速度和閤成語音質量。在硬件電路上以C8051F020為通信控製覈心、以TMS320VC5509A為數據處理覈心，併在單片機和DSP之間以HPI模式快速傳遞數據。倣真分析和語音測試的結果錶明，該繫統在低編碼速率下穫得瞭較高質量的閤成語音，能夠實現低延時、高效率的語音通信。
지능대선기어음전수계통재편마기술상이13kQCELP위기출，채용분수기음수색산법화자상관고정마본수색산법래제고어음처리속도화합성어음질량。재경건전로상이C8051F020위통신공제핵심、이TMS320VC5509A위수거처리핵심，병재단편궤화DSP지간이HPI모식쾌속전체수거。방진분석화어음측시적결과표명，해계통재저편마속솔하획득료교고질량적합성어음，능구실현저연시、고효솔적어음통신。
For the convenience of workers of power workplace in the use of intelligent line-check device on speech communication, a speech transmission system is designed on the base of the intelligent line-check device. Based on the coding technique of 13kQCELP, the system improves the speech processing speed and the quality of reconstruction speech through the adoption of fractional pitch search algorithm and the search algorithm of autocorrelation ifxed codebook. In the hardware circuit design of this system C8051F020 and TMS320VC5509A are used as communication control core and data processing core respectively. Data is transmitted fastly between MCU and DSP in the mode of HPI. The results of simulation analysis and voice test show that the communication speech system attains high quality reconstruction speech at a low code rate and achieve low delay and high efifcient speech communication.
