【正文】 即時(shí)消息系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)語音通訊模塊的實(shí)現(xiàn)摘要： .....................................................................3ABSTRACT:.................................................................3第一章 引言 ............................................................4 論文背景 .....................................................................................................................................................4 國內(nèi)外研究現(xiàn)狀及發(fā)展趨勢 .....................................................................................................................5 研究現(xiàn)狀 ..............................................................................................................................................5 發(fā)展趨勢 ..............................................................................................................................................5第二章 關(guān)鍵技術(shù) ........................................................7 XMPP協(xié)議 ...................................................................................................................................................7 XMPP協(xié)議簡介 .....................................................................................................................................7 XMPP協(xié)議基本網(wǎng)絡(luò)結(jié)構(gòu) .....................................................................................................................7 選擇 XMPP協(xié)議的理由 ........................................................................................................................7 網(wǎng)絡(luò)通信協(xié)議 ............................................................................................................................................8 SOCKET網(wǎng)絡(luò)編程 .........................................................................................................................................9 音頻捕獲技術(shù) ............................................................................................................................................9 音頻回放技術(shù) ............................................................................................................................................9 音頻采樣技術(shù) ..........................................................................................................................................10 音頻壓縮/解壓技術(shù) ................................................................................................................................10 P2P技術(shù) ...................................................................................................................................................10第三章 語音通訊系統(tǒng)的分析 .............................................11 語音通訊系統(tǒng)可行性分析 .......................................................................................................................11 語音通訊系統(tǒng)需求分析 ...........................................................................................................................11 項(xiàng)目總述 ............................................................................................................................................12 市場需求分析 ....................................................................................................................................12 用戶需求分析 ....................................................................................................................................12 軟件性能要求 ....................................................................................................................................13 軟件功能需求 ....................................................................................................................................13 語音通訊系統(tǒng)流程分析 ...........................................................................................................................14 語音通訊系統(tǒng)數(shù)據(jù)流圖 ...........................................................................................................................15第四章 語音通訊系統(tǒng)的設(shè)計(jì) .............................................17 系統(tǒng)結(jié)構(gòu) .....................................................................................................................................................17 開發(fā)工具 .....................................................................................................................................................17 流程設(shè)計(jì) .....................................................................................................................................................18 語音通訊系統(tǒng)總體設(shè)計(jì) .............................................................................................................................19 語音通訊系統(tǒng)詳細(xì)設(shè)計(jì) .............................................................................................................................19 登錄模塊 ............................................................................................................................................19 建立連接模塊 ....................................................................................................................................20 音頻捕獲模塊 ....................................................................................................................................21 音頻回放模塊 ....................................................................................................................................23第五章 語音通訊系統(tǒng)的實(shí)現(xiàn) .............................................26 構(gòu)建語音通訊系統(tǒng)的用戶登錄系統(tǒng) .........................................................................................................26 連接建立模塊的實(shí)現(xiàn) .................................................................................................................................26 麥克風(fēng)相關(guān)操作 ................................................................................................................................26 建立通信連接 ....................................................................................................................................28.....................................................