本文關(guān)鍵詞：基于ARMCortex-M3數(shù)字音頻網(wǎng)絡(luò)廣播終端的設(shè)計(jì)與實(shí)現(xiàn)　出處：《西安科技大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 數(shù)字音頻網(wǎng)絡(luò)廣播終端 ARM Cortex-M3 SafeRTOS LwIP

【摘要】：嵌入式和網(wǎng)絡(luò)技術(shù)的飛速發(fā)展，給傳統(tǒng)的音頻處理和傳輸領(lǐng)域帶來了極大的沖擊。傳統(tǒng)的模擬音頻廣播技術(shù)將逐步被基于以太網(wǎng)絡(luò)傳輸?shù)臄?shù)字音頻網(wǎng)絡(luò)廣播技術(shù)所取代。采用低成本、低功耗、體積小、應(yīng)用靈活的嵌入式系統(tǒng)成為了數(shù)字音頻網(wǎng)絡(luò)廣播系統(tǒng)的發(fā)展趨勢(shì)。 本文針對(duì)數(shù)字音頻網(wǎng)絡(luò)廣播系統(tǒng)的應(yīng)用需求，，提出了一種基于嵌入式系統(tǒng)的數(shù)字音頻網(wǎng)絡(luò)廣播終端的設(shè)計(jì)方案。本終端以基于ARM Cortex-M3內(nèi)核的微處理器LM3S9B96為核心，設(shè)計(jì)了主處理模塊、外部存儲(chǔ)模塊、音頻模塊、網(wǎng)絡(luò)接口模塊和電源模塊，實(shí)現(xiàn)了數(shù)字音頻網(wǎng)絡(luò)廣播終端的硬件平臺(tái)設(shè)計(jì)。 本文提出了基于SafeRTOS實(shí)時(shí)操作系統(tǒng)的終端驅(qū)動(dòng)程序?qū)崿F(xiàn)方案。在參考實(shí)時(shí)傳輸協(xié)議(RTP)及實(shí)時(shí)傳輸控制協(xié)議(RTCP)的基礎(chǔ)上，設(shè)計(jì)了基于UDP協(xié)議的適合數(shù)字音頻網(wǎng)絡(luò)廣播的網(wǎng)絡(luò)傳輸協(xié)議，解決了廣播數(shù)據(jù)傳輸?shù)膶?shí)時(shí)性和可靠性問題。完成了基于嵌入式TCP/IP協(xié)議棧LwIP的音頻數(shù)據(jù)傳輸及播放程序的設(shè)計(jì)。 最后為確保數(shù)字音頻網(wǎng)絡(luò)廣播終端符合工業(yè)化要求，對(duì)數(shù)字音頻網(wǎng)絡(luò)廣播終端進(jìn)行了驅(qū)動(dòng)程序測(cè)試、音頻性能指標(biāo)測(cè)試和功能性測(cè)試。實(shí)驗(yàn)表明該系統(tǒng)同傳統(tǒng)的廣播系統(tǒng)相比，體現(xiàn)出了明顯的優(yōu)勢(shì)，達(dá)到了設(shè)計(jì)要求。
[Abstract]:The rapid development of embedded technology and network technology, brings great impact to the audio processing and transmission field. The traditional analog audio broadcasting technology of traditional broadcasting technology will gradually be based on Ethernet network digital audio replaced. With low cost, low power consumption, small volume, flexible application of embedded system has become the development trend of network digital audio broadcasting system.
According to the application requirements of the network digital audio broadcasting system, this paper puts forward a design scheme of embedded system network digital audio broadcasting terminal based on Cortex-M3. The terminal uses ARM microprocessor based on LM3S9B96 as the core, design the main processing module, external storage module, audio module, network interface module and power supply module, realized the design of hardware platform of network digital audio broadcasting terminal.
This paper presents a design scheme of terminal SafeRTOS real-time operating system based on driver. In reference to the real-time transport protocol (RTP) and real time Transport Control Protocol (RTCP) based on the design of network protocol for network digital audio broadcasting system based on UDP protocol to solve the radio data transmission problem of real time and reliability. Complete the design of audio data transmission of embedded TCP/IP protocol stack LwIP and broadcast program based on.
Finally, in order to ensure the network digital audio broadcasting terminal in line with the industrialization requirements of network digital audio broadcasting terminal of audio driver testing, performance testing and functional testing. The experimental results show that compared with the traditional broadcasting system, the system reflects the obvious advantages, meet the design requirements.

【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TN934.3;TP368.12

【參考文獻(xiàn)】

相關(guān)期刊論文 前9條

1 謝光強(qiáng);;基于RTOS開發(fā)嵌入式系統(tǒng)初探[J];電腦知識(shí)與技術(shù);2006年23期

2 趙暉;Ethersound網(wǎng)絡(luò)數(shù)字音頻技術(shù)及應(yīng)用[J];電聲技術(shù);2004年01期

3 范學(xué)鋒;吳成柯;;基于DDK的TLV320AIC23型編解碼器的驅(qū)動(dòng)設(shè)計(jì)[J];國(guó)外電子元器件;2006年03期

4 陳志軍,封筠,王滿順,劉朝英;流媒體技術(shù)及應(yīng)用[J];河北工業(yè)科技;2003年04期

5 邵富杰;張國(guó)利;周勇;;基于I2S總線實(shí)現(xiàn)嵌入式語(yǔ)音采集與回放[J];微計(jì)算機(jī)信息;2011年06期

6 范承志,伍慶潤(rùn),張文淵,宋寧;局域網(wǎng)中多媒體數(shù)據(jù)實(shí)時(shí)傳輸技術(shù)的實(shí)現(xiàn)[J];微型電腦應(yīng)用;2002年10期

7 孫樂鳴;江來;代鑫;;嵌入式TCP/IP協(xié)議棧LWIP的內(nèi)部結(jié)構(gòu)探索與研究[J];電子元器件應(yīng)用;2008年03期

8 趙進(jìn),葉梧,馮穗力;基于RTP/RTCP的流媒體服務(wù)器技術(shù)研究[J];中國(guó)有線電視;2004年01期

9 魏輝;徐中海;;智能型音頻處理器的原理及應(yīng)用[J];音響技術(shù);2009年06期

本文編號(hào)：1383423