基于聲卡的聲音采集播放與網絡傳輸

電氣工程論文編號:DQ114   論文字數:20002,頁數:41

目錄
摘要 II
Abstract III
1 緒論 1
1.1 研究背景與意義 1
1.2 聲卡的發展概況 1
1.3 研究任務與目標 2
2  聲音的產生與采集 5
2.1 聲音信號的產生與表達 5
2.2 聲音信號的數字化 5
2.2.1 采樣與量化 5
2.2.2 聲音信號的重構 5
2.3 聲音的采集 10
2.3.1 基于聲卡和MATLAB的數據采集與分析系統 10
2.3.2 基于聲卡和LABVIEW的數據采集與分析系統 13
3  聲音的播放 17
3.1 音頻文件格式的種類 17
3.2 聲音的播放 19
3.2.1 WAVE聲音的播放 19
3.2.2 MIDI音樂的播放 20
3.2.3 WAVE與MIDI音樂的同步播放 21
3.2.4 MP3音樂的播放 22
4  聲音的網絡傳輸 24
4.1 網絡傳輸協議 24
4.2 遠程網絡數據傳輸 24
5  程序設計 28
5.1 開發軟件Visual C++相關 28
5.1.1  C++的發展歷程 28
5.1.2  可視化技術及其發展 29
5.2 錄音機程序設計 30
總結 34
致謝 35
參考文獻 36

摘要
    隨著計算機的普及、高速信息公路的興起，多媒體技術已經進入千家萬戶一臺基本的多媒體微型計算機，除PC機外，至少應該包含聲卡、CD-ROM驅動器。與其他電腦產品相比，聲卡的歷史并不算長。但是做為多媒體力量的象征，聲卡當然也經歷了一次又一次轟轟烈烈的變革。    本文主要介紹了聲音的采集播放和網絡傳輸，利用聲卡的A／D、D／A技術和MATLAB的方便編程及可視化功能，提出了一種語音信號數字處理方案，另一種是利用聲卡DSP技術和LabVIEW 多線程技術，提出了一種基于聲卡的數據采集與分析方法。又介紹包括WAVE、MIDI、MP3三種音頻文件的播放方式。在傳輸方面，簡要介紹了以Winsock為基礎的遠程網絡傳輸。
 最后，本介紹了Microsoft Visual C++6.0的發展歷程及可視化技術以及在Microsoft Visual C++6.0開發環境中編出一個基于API的錄音機程序，使其簡單錄、放音并保存為wav文件的程序。
 
關鍵詞：聲卡；采集播放；網絡傳輸；Winsock；Visual C++

Abstract
With the popularization of computers, the rise of Information Highway , multimedia technology has entered every household a basic multi-media micro-computer, with the exception of PC machine,  at least should include sound card, CD-ROM drive. Compared with other computer products, sound cards have not a very long history. But as a symbol of the power of multimedia, sound card of course, has undergone dynamic changes again and again.
This paper mainly introduces the player to collect the sound and network transmission, the use of sound card A / D, D / A technology and the convenience of MATLAB programming and visualization capabilities, a voice signal digital processing program, and the other is DSP technology and the use of sound card LabVIEW multithreading technology, a sound card based on the data collection and analysis methods. Introduced, including WAVE, MIDI, MP3 audio files of three ways of player. In the transmission connection, I introduce the Winsock remote network-based transmission.
Finally, the introduction of Microsoft Visual C + +6.0 and the development process of visualization technology, as well as in Microsoft Visual C + +6.0 development environment for a procedure based on the API tape recorder so that it recorded a simple, playback and save it as a wav documents.
Key words: sound card; Acquisition player; network transmission; Winsock; Visual C + +