【正文】
基于TMS320VC5502的語音信號采集系統(tǒng)設(shè)計 摘 要:為了研究數(shù)字信號處理,提出了一個基于DSP TMS320VC5502和A/D轉(zhuǎn)換芯片TLC320AD50的語音信號采集系統(tǒng)的設(shè)計。給出了該系統(tǒng)的總體設(shè)計方案,具體硬件電路,包括系統(tǒng)電源設(shè)計、復(fù)位電路設(shè)計、時鐘電路設(shè)計、存儲器設(shè)計、A/D接口電路設(shè)計、JTAG接口設(shè)計、DSP與A/D芯片的連接等,以及軟件流程圖。通過MATLAB得到語音信號的波形和頻譜圖。實驗表明: 所設(shè)計的基于DSP的硬件和軟件系統(tǒng)是一個很好的語音信號采集系統(tǒng),該系統(tǒng)結(jié)構(gòu)清晰,電路簡潔,易于實現(xiàn)。關(guān)鍵詞:語音信號;數(shù)據(jù)采集;DSP;TLC320AD50Abstract:In the study based on digital signal processing, proposed a design based on DSP TMS320VC5502 and A / D converter chip TLC320AD50 speech signal acquisition system. Gives the overall design scheme of the system, the hardware circuit including the system power supply design, the reset circuit design, clock circuits, memory design, A / D interface circuit, JTAG interface design, the connections of DSP and A / D chip and so on, and software flow chart. We get speech signal waveform and spectrum diagram by MATLAB. Experiments show that: the design based on DSP hardware and software systems is an excellent voice signal acquisition system, the system structure is clear, the circuit is simple and easy to achieve.Keywords:Voice signal。Data Acquisition。DSP。TLC320AD5020世紀(jì)50年代以來,隨著數(shù)字信號處理各項技術(shù)的發(fā)展,語音信號處理技術(shù)得到不斷提高, 語音合成、語音識別、語音記錄與語音控制等技術(shù)已開始逐步成熟并得到應(yīng)用。在語音信號處理過程中, 要實現(xiàn)語音信號處理技術(shù)的精確性、實時性目的,語音信號采集和無誤差存儲成為語音信號處理中的前提。TMS320VC5502是德州儀器公司公司在2002年基于TMS320VC5502推出的定點數(shù)字信號處理器,它采用修正的哈佛結(jié)構(gòu),包括1個程序存儲總線、3個數(shù)據(jù)存儲總線和4個地址總線,這種結(jié)構(gòu)允許同時執(zhí)行程序指令和對數(shù)據(jù)操作, 運行速度快,單周期定點指令