發(fā)布時(shí)間：2018-01-31 11:19

  本文關(guān)鍵詞： RTP協(xié)議 語(yǔ)音數(shù)據(jù) 實(shí)時(shí)傳輸 延時(shí)　出處：《黑龍江大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著Internet網(wǎng)絡(luò)的迅速發(fā)展，在人們的日常生活中，出現(xiàn)了越來(lái)越多的網(wǎng)絡(luò)業(yè)務(wù)。相較于其它業(yè)務(wù)，語(yǔ)音數(shù)據(jù)的實(shí)時(shí)傳輸業(yè)務(wù)成為了網(wǎng)絡(luò)發(fā)展的熱點(diǎn)。在網(wǎng)絡(luò)中傳輸語(yǔ)音數(shù)據(jù)，既要考慮到網(wǎng)絡(luò)通道的帶寬問(wèn)題，，又要確保語(yǔ)音數(shù)據(jù)在傳輸過(guò)程中的實(shí)時(shí)性及連續(xù)性。為此，IEFT在RFC1989中發(fā)布了RTP協(xié)議。 論文中，詳細(xì)介紹了流媒體數(shù)據(jù)的特點(diǎn)，語(yǔ)音數(shù)據(jù)在傳輸過(guò)程中會(huì)出現(xiàn)的問(wèn)題，以及RTP協(xié)議的特點(diǎn)和應(yīng)用，并提出了在ARM處理器上實(shí)現(xiàn)基于RTP協(xié)議的實(shí)時(shí)語(yǔ)音數(shù)據(jù)傳輸?shù)脑O(shè)計(jì)。 語(yǔ)音數(shù)據(jù)在傳輸過(guò)程中會(huì)出現(xiàn)傳輸延時(shí)、傳輸抖動(dòng)及數(shù)據(jù)包丟失等問(wèn)題。為了保證語(yǔ)音數(shù)據(jù)的服務(wù)質(zhì)量，在硬件方面，使用支持10/100M的LAN8720A網(wǎng)口芯片傳輸數(shù)據(jù)。在軟件方面，實(shí)現(xiàn)了語(yǔ)音數(shù)據(jù)的采集、編碼、壓縮、解碼、RTP打包分組、發(fā)送和接收操作，在軟硬件的協(xié)同配合下，實(shí)現(xiàn)了基于RTP協(xié)議的實(shí)時(shí)語(yǔ)音數(shù)據(jù)的傳輸。
[Abstract]:With the rapid development of Internet network, more and more network services appear in people's daily life, compared with other services. The real-time transmission of voice data has become a hot spot in the development of network. In the transmission of voice data in the network, we should consider the bandwidth of the network channel. In order to ensure the real-time and continuity of voice data transmission, IEFT issues RTP protocol in RFC1989. In this paper, the characteristics of streaming media data, the problems of voice data transmission, and the characteristics and applications of RTP protocol are introduced in detail. The design of real-time voice data transmission based on RTP protocol on ARM processor is proposed. In order to ensure the quality of service of voice data, there are some problems such as transmission delay, transmission jitter and packet loss in the process of voice data transmission. In the software aspect, the data acquisition, coding, compression and decoding are realized. With the cooperation of hardware and software, the transmission of real-time voice data based on RTP protocol is realized.
【學(xué)位授予單位】：黑龍江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP393.04

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本文編號(hào)：1478946