多媒体基础知识

翔羽

<h3 style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;"><span lang="EN-US"><p></p></span></span>&nbsp;</h3><p style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;"><span lang="EN-US"><br/></span>主要知识点<span lang="EN-US"><p></p></span></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">掌握多媒体的基本概念，熟悉图形、图像格式和基本音频、视频知识。<span lang="EN-US"><p></p></span></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;"><span lang="EN-US"><br/>1、</span>常见的音频格式<span lang="EN-US"><p></p></span></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">（<span lang="EN-US">1</span>）<span lang="EN-US"> WAVE</span>，扩展名为<span lang="EN-US">WAV</span>。<span lang="EN-US"><p></p></span></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">该格式记录了声音的波形，只要采样率高、采样字节长、计算机速度快，利用该格式记录的声间文件能够和原声基本一致。<span lang="EN-US">WAVE</span>的唯一缺点就是文件太大，毕竟它要把声音的每个细节都记录下来，而且不压缩。<span lang="EN-US"><p></p></span></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">（<span lang="EN-US">2</span>）<span lang="EN-US"> MOD</span>，扩展名为<span lang="EN-US">MOD</span>，<span lang="EN-US">ST3</span>，<span lang="EN-US">XT</span>，<span lang="EN-US">S<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="3" unitname="m">3M</chmetcnv></span>，<span lang="EN-US">FAR</span>和<span lang="EN-US">669</span>等。<span lang="EN-US"><p></p></span></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MOD</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">是一类音乐文件的总称，逐渐发展产生了<span lang="EN-US">ST3</span>，<span lang="EN-US">XT</span>，<span lang="EN-US">S<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="3" unitname="m">3M</chmetcnv></span>，<span lang="EN-US">FAR</span>和<span lang="EN-US">669</span>等扩展格式，而其基本原理还是一样的。该格式的文件不仅存放了乐谱，而且存放了乐曲使用的各种音色样本，具有回放效果明确、音色种类永无止境的优点。<span lang="EN-US"> <p></p></span></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">（<span lang="EN-US">3</span>）<span lang="EN-US"> MPEG-3</span>，扩展名为<span lang="EN-US">MP3</span>。<span lang="EN-US"><p></p></span></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MPEG-3</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">压缩较大，是一种有损压缩，其实际音质并不完美。在网络、可视电话能信方面，<span lang="EN-US">MP3</span>大有用武之地。由于本质不同，所以它没法和<span lang="EN-US">MOD</span>、<span lang="EN-US">MIDI</span>相提并论。从<span lang="EN-US">HIFI </span>角度上讲，<span lang="EN-US">MP3</span>有损失，而<span lang="EN-US">MOD</span>和<span lang="EN-US">MIDI</span>则没有。<span lang="EN-US"><p></p></span></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">（</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">4</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">）</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;"> Real Audio</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">，扩展名</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">RA</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;"><p></p></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">强大的压缩量和极小的失真度使其在众多格式中脱颖而出。</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">与<span lang="EN-US">MP3</span>相同，它也是为了解决网络传输带宽资源设计的，因此其主要目标是提高压缩比和容错性，其次才是音质。<span lang="EN-US"><p></p></span></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">（</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">5</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">）</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">Creative Musical Format, </span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">的扩展名为</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">CMF</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;"><p></p></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">这是</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">Creative</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">公司的专用音乐格式。</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">它和<span lang="EN-US">MIDI</span>差不多，只是音色、效果上有些特色，专用于<span lang="EN-US">FM</span>声卡。不过其兼容性差，且效果无法和别的格式相提并论。<span lang="EN-US"><p></p></span></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">（<span lang="EN-US">6</span>）<span lang="EN-US">CD Audio</span>音乐<span lang="EN-US">CD</span>，扩展名为<span lang="EN-US">CDA</span>。<span lang="EN-US"><p></p></span></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">CDA</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">格式就是唱片采用的格式，又叫<span lang="EN-US">"</span>红皮书<span lang="EN-US">"</span>格式，记录的是波形流。<span lang="EN-US">CDA</span>的缺点是无法编辑，文件长度太大。<span lang="EN-US"><p></p></span></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">（</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">7</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">）</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MIDI</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">，扩展名为</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MID</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;"><p></p></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">作为音乐工业的数据通信标准，</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MIDI</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">可谓是一种非常专业的语言，它能指挥各种音乐设备的运转，而且具有统一的标准格式，甚至能够模仿用原始乐器的各种演奏持巧无法演奏的效果。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MIDI</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">文件长度非常小。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MIDI</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">的一个缺点是不能记录语音。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;"><p></p></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;"><br/>2</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">、多媒体数据压缩的编码技术标准。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;"><p></p></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">（</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">1</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">）</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">H</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">．</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">261<p></p></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">H</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">．</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">261</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">是用于音频视频服务的视频编码和解码器（也称</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">X64</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">标准）。应用目标是可视电话和视频会议系统。含有此标准的系统必须能实时地按标准进行编码和解码。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">H.261</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">与</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">JPEG</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">及</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MPEG</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">标准间有明显的相似性</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">,</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">区别是</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">H.261</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">是为动态使用而设计的</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">,</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">并提供完全饮食的组织和高水平的交互控制</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">.<p></p></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">(2)JPEG<p></p></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">JPEG</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">是静止图像压缩和解压缩算法的标准</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">.JPEG</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">成为</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">ISO</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">的国际标准</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">.<p></p></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">(3)MPEG<p></p></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MPEG-X</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">版本是指一组</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">ITU</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">和</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">ISO</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">制定发布的视频、音频和数据的压缩标准。现在有</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">3</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">个版本的</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MPEG</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">：</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MPEG-1</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">、</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MPEG-2</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">和</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MPEG-4</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MPEG</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">在以下</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">3</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">方面优于其他压缩</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">/</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">解压缩方案：具有很好的兼容性；</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MPEG</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">能够比其他算法提供更好的压缩比，最高达</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">200</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">：</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">1</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">；更重要的是，</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MPEG</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">在提供高压缩比的同时，数据压缩的损失很小。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;"><p></p></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">（</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">4</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">）</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">DVI<p></p></span></p><p style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">DVI</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">视频图像压缩算法的性能与</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">MPEG1</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">相当，即图像质量可达到</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">VHS</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">的水平。压缩后的图像数据率约为</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">1</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">5Mbit/s.</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">为了扩大</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">DVI</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">技术的应用，</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">Intel</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">公司最近又推出了</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">DVI</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">算法的软件解码算法，称为</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">Indeo</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">技术。它能将数字视频文件压缩为五分之一到十分之一。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">Indeo</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">技术使用了多类</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">"</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">有损</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">"</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">和</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">"</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">无损</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;">"</span><span lang="ZH-TW" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体;">压缩技术。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN;"><p></p></span></p>

cherie

不错，感谢楼主

不变的信仰

真是汗啊  我的帖子好少啊  加油