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论文编号:DQ114 论文字数:20002,页数:41
摘要
随着计算机的普及、高速信息公路的兴起，多媒体技术已经进入千家万户一台基本的多媒体微型计算机，除PC机外，至少应该包含声卡、CD-ROM驱动器。与其他电脑产品相比，声卡的历史并不算长。但是做为多媒体力量的象征，声卡当然也经历了一次又一次轰轰烈烈的变革。 本文主要介绍了声音的采集播放和网络传输，利用声卡的A／D、D／A技术和MATLAB的方便编程及可视化功能，提出了一种语音信号数字处理方案，另一种是利用声卡DSP技术和LabVIEW 多线程技术，提出了一种基于声卡的数据采集与分析方法。又介绍包括WAVE、MIDI、MP3三种音频文件的播放方式。在传输方面，简要介绍了以Winsock为基础的远程网络传输。
最后，本介绍了Microsoft Visual C++6.0的发展历程及可视化技术以及在Microsoft Visual C++6.0开发环境中编出一个基于API的录音机程序，使其简单录、放音并保存为wav文件的程序。
关键词：声卡；采集播放；网络传输；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 + +
目录
摘要 II
Abstract III
1 绪论 1
1.1 研究背景与意义 1
1.2 声卡的发展概况 1
1.3 研究任务与目标 2
2 声音的产生与采集 5
2.1 声音信号的产生与表达 5
2.2 声音信号的数字化 5
2.2.1 采样与量化 5
2.2.2 声音信号的重构 5
2.3 声音的采集 10
2.3.1 基于声卡和MATLAB的数据采集与分析系统 10
2.3.2 基于声卡和LABVIEW的数据采集与分析系统 13
3 声音的播放 17
3.1 音频文件格式的种类 17
3.2 声音的播放 19
3.2.1 WAVE声音的播放 19
3.2.2 MIDI音乐的播放 20
3.2.3 WAVE与MIDI音乐的同步播放 21
3.2.4 MP3音乐的播放 22
4 声音的网络传输 24
4.1 网络传输协议 24
4.2 远程网络数据传输 24
5 程序设计 28
5.1 开发软件Visual C++相关 28
5.1.1 C++的发展历程 28
5.1.2 可视化技术及其发展 29
5.2 录音机程序设计 30
总结 34
致谢 35
参考文献 36
