1、物理层的基本概念 2、数据通信的基本知识 3、物理层下面的传输媒体 4、信道复用技术 5、数字传输系统 6、宽带接入技术

声音是携带信息的极其重要的媒体，是多媒体技术研究中 的一个重要内容。声音的种类繁多，如人的话音、乐器声、动 物发出的声音、机器产生的声音以及自然界的声音等。 这些声音有许多共同的特性，也有它们各自的特性。在用 计算机处理这些声音时，既要考虑它们的共性，又要利用它们 的各自的特性

信息时代的重要特征是信息的数字化。早期的信息用模拟方式表示，模拟 存在着明显的缺点：在信息的传输过程中会产生噪音和信号丢失；信息在 复制过程中其噪音和误差会逐步积累；模拟信号不适合数字计算机加工处 理。信号的数字化克服了上述缺点，但数字化后未经压缩的视频和音频等 媒体信息的数据量是非常大的

We examine the patterns of media ownership in 97 countries around the world. We find that almost universally the largest media firms are owned by the government or by private families. Government ownership is more pervasive in broadcasting than in the printed media. Government ownership of the media is generally associated with less press freedom, fewer political and economic

Washington & Lee Public Law and Legal Theory Research Paper Series Working Paper No. 01-03 November 2000 ENHANCING THE SPECTRUM: MEDIA POWER, DEMOCRACY, AND THE MARKETPLACE OF IDEAS

(Harvard University and NBER) October 1, 2002 Abstract There are two dierent types of media bias. One bias, which we refer to as ideology, re ects a news outlet's desire to aect reader opinions in a particular direction. The second bias, which we refer to as spin

This work is distributed as a Discussion Paper by the STANFORD INSTITUTE FOR ECONOMIC POLICY RESEARCH SIEPR Discussion Paper No. 03- Confusing Success with Access: “Correctly” Measuring Concentration of Ownership and Control in Mass Media and Online Services

Privatization and Self-Regulation as Tropes of Global Media Restructuring There is a power to language itself in affecting media reform around the world. The field of media regulation is filled with examples of strong ideas, encapsulated in words and phrases, that have an enormous impact on legislative transformation, and the export of which seems a characteristic of globalization. Just think of the ideology-laden tropes

Regulatory Reform: The Telecommunications Act of 1996 and the FCC Media Ownership Rules by Bruce M. Owen May 2003 Prepared for the Fourth Annual

1、广告发展概述（2课时） 2、广告螺旋（2课时） 3、广告管理（2课时） 4、广告调研（2课时） 5、广告媒体（8课时） 6、广告设计（12课时） 7、广告制作（2课时） 8、零售广告（2课时） 9、广告效益分析（2课时）