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<div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62504c696caf596192fe5f92/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">1<span class="fc1 sc1"> </span>2<span class="fc1 sc1"> </span>3<span class="fc1 sc1"> </span>4<span class="fc1 sc1"> </span>5<span class="fc1 sc1"> </span>6<span class="fc1 sc1"> </span>7<span class="fc1 sc1"> 8 </span>9<span class="fc1 sc1"> </span>10<span class="fc1 sc1"> </span>11<span class="fc1 sc1"> </span>12<span class="fc1 sc1"> </span>13<span class="fc1 sc1"> </span>14<span class="fc1 sc1"> </span>15<span class="_ _0"></span><span class="fc1 sc1"> </span>16<span class="fc1 sc1"> </span>17<span class="fc1 sc1"> </span>18<span class="fc1 sc1"> </span>19<span class="fc1 sc1"> </span>20<span class="fc1 sc1"> </span>21<span class="fc1 sc1"> </span>22<span class="fc1 sc1"> </span>23</div><div class="t m0 x2 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0">24<span class="fc2 sc2"> </span>25<span class="fc2 sc2"> </span>26<span class="fc2 sc2"> </span>27<span class="fc2 sc3"> </span></div><div class="t m0 x3 h2 y3 ff2 fs0 fc1 sc1 ls0 ws0">视听技术小辞典（八）<span class="ff1"> <span class="fc2 sc3"> </span></span></div><div class="t m0 x4 h2 y4 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">数字电视（<span class="ff1">DTV</span>）</span>】</div><div class="t m0 x4 h2 y5 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">混浊（<span class="ff1">dull</span>）</span>】</div><div class="t m0 x4 h2 y6 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="ff1 fc0">DVD<span class="ff2">影碟</span></span>】</div><div class="t m0 x4 h2 y7 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="ff1 fc0">DVD</span></div><div class="t m0 x5 h3 y8 ff2 fs0 fc0 sc3 ls0 ws0">音频唱片<span class="fc1">】</span></div><div class="t m0 x4 h2 y9 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="ff1 fc0">DVD<span class="ff2">可录光盘</span></span>】</div><div class="t m0 x4 h2 ya ff2 fs0 fc1 sc3 ls0 ws0">【<span class="ff1 fc0">DVD-RAM</span>】</div><div class="t m0 x4 h2 yb ff2 fs0 fc1 sc3 ls0 ws0">【<span class="ff1 fc0">DVD<span class="ff2">只读光盘</span></span>】</div><div class="t m0 x4 h2 yc ff2 fs0 fc1 sc3 ls0 ws0">【<span class="ff1 fc0">DVD-RW</span>】</div><div class="t m0 x4 h3 yd ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">动态压缩</span>】</div><div class="t m0 x4 h3 ye ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">动态范围</span>】</div><div class="t m0 x4 h3 yf ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">动态范围压缩器</span>】</div><div class="t m0 x4 h3 y10 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">唱臂有效质量</span>】</div><div class="t m0 x4 h3 y11 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">静电式扬声器</span>】</div><div class="t m0 x4 h3 y12 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">电</span></div><div class="t m0 x6 h3 y13 ff2 fs0 fc0 sc3 ls0 ws0">磁干扰<span class="fc1">】</span></div><div class="t m0 x4 h3 y14 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">包</span></div><div class="t m0 x6 h3 y15 ff2 fs0 fc0 sc3 ls0 ws0">围感<span class="fc1">】</span></div><div class="t m0 x4 h3 y16 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">均衡</span>】</div><div class="t m0 x4 h3 y17 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">均衡器</span>】</div><div class="t m0 x4 h2 y18 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">刺耳（<span class="ff1">etched</span>）</span>】</div><div class="t m0 x4 h2 y19 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">延伸<span class="ff1">(extension)</span></span>】</div><div class="t m0 x4 h2 y1a ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">反馈<span class="ff1">(feedback)</span></span>】</div><div class="t m0 x4 h3 y1b ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">磁液冷却</span>】</div><div class="t m0 x4 h3 y1c ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">快速傅里叶变换</span>】</div><div class="t m0 x4 h3 y1d ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">滤波器</span>】</div><div class="t m0 x4 h3 y1e ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">滤波电容器</span>】</div><div class="t m0 x4 h2 y1f ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">火线<span class="ff1">(firewire)</span></span>】</div><div class="t m0 x4 h3 y20 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">快闪存贮</span>】</div><div class="t m0 x4 h2 y21 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">平坦（<span class="ff1">flat</span>）</span>】</div><div class="t m0 x4 h3 y22 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">落地式音箱</span>】</div><div class="t m0 x4 h3 y23 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">多次回声</span>】</div><div class="t m0 x4 h3 y24 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">前推</span>】</div><div class="t m0 x4 h2 y25 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">帧（<span class="ff1">frame</span>）</span>】</div><div class="t m0 x4 h2 y26 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">频率<span class="ff1">(frequency)</span></span>】</div><div class="t m0 x4 h3 y27 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">频率响应</span>】</div><div class="t m0 x4 h2 y28 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">前端<span class="ff1">(front end)</span></span>】</div><div class="t m0 x4 h3 y29 ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">前投式投影电视</span>】</div><div class="t m0 x4 h2 y2a ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">丰满（<span class="ff1">full</span>）</span>】</div><div class="t m0 x4 h3 y2b ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">宽频带音箱</span>】</div><div class="t m0 x4 h2 y2c ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">增益（<span class="ff1">gain</span>）</span>】</div><div class="t m0 x4 h2 y2d ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">柔和（<span class="ff1">gentle</span>）</span>】</div><div class="t m0 x4 h2 y2e ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">闪亮（<span class="ff1">glassy</span>）</span>】</div><div class="t m0 x4 h2 y2f ff2 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">颗粒（<span class="ff1">grainy</span>）</span>】</div><div class="t m0 x7 h4 y30 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y31 ff2 fs2 fc3 sc4 ls0 ws0">数字电视（<span class="ff1">DTV<span class="_ _0"></span></span>）<span class="ff4 fc2 sc3">󴖦󴖦󴖦<span class="ff1"> </span></span></div><div class="t m0 x8 h5 y32 ff2 fs2 fc2 sc3 ls1 ws0">所有数字电视的通称，包括高<span class="_ _1"></span>消晰度电视（<span class="ff1 ls0">HDTV</span>）和标准清晰度电视（<span class="ff1 ls0">SDTV</span>）在内。</div><div class="t m0 x9 h2 y33 ff1 fs0 fc2 sc3 ls2 ws0"> </div><div class="t m0 x7 h4 y34 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y35 ff2 fs2 fc3 sc4 ls0 ws0">混浊（<span class="ff1">dull</span>）<span class="ff4 fc2 sc3">󴖦󴖦󴖦<span class="_ _0"></span><span class="ff1"> </span></span></div><div class="t m0 x8 h6 y36 ff2 fs2 fc2 sc3 ls1 ws0">指缺少高音能量。</div><div class="t m0 xa h2 y37 ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 y38 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y39 ff1 fs2 fc3 sc4 ls3 ws0">DVD<span class="ff2 ls4">影碟（</span><span class="ls5">DVD-Video<span class="ff2 ls0">）<span class="_ _2"></span></span></span><span class="ff4 fc2 sc3">󴖦󴖦󴖦<span class="ff1 ls0"> </span></span></div><div class="t m0 x8 h5 y3a ff2 fs2 fc2 sc3 ls5 ws0">指用作家庭娱乐用的一种视频光盘。尺寸和<span class="ff1 ls3">CD<span class="_ _0"></span></span>唱片一样，但录入的则为按<span class="ff1">MPEG-2</span><span class="ls0">编</span></div><div class="t m0 x8 h5 y3b ff2 fs2 fc2 sc3 ls5 ws0">码的数字视频和杜比数字（<span class="ff1 ls3">DD</span>）编码<span class="_ _0"></span>的环绕声音频。<span class="ff1 ls3">DVD</span>影碟需用<span class="_ _0"></span><span class="ff1 ls3">DVD</span>播放机来播</div><div class="t m0 x8 h6 y3c ff2 fs2 fc2 sc3 ls5 ws0">放。</div><div class="t m0 xb h2 y3d ff1 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y3e ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y3f ff1 fs2 fc3 sc4 ls3 ws0">DVD<span class="ff2 ls5">音频唱片（<span class="ff1">DVD-Audio</span><span class="ls0">）<span class="_ _2"></span></span></span><span class="ff4 fc2 sc3">󴖦󴖦<span class="_ _0"></span><span class="ff1 ls0"> </span></span></div><div class="t m0 x8 h5 y40 ff2 fs2 fc2 sc3 ls5 ws0">新一代的音乐唱片。目前为<span class="ff1 ls0">1<span class="_ _2"></span><span class="ff2">．<span class="_ _2"></span></span>0<span class="_ _2"></span></span>版本，数据格式为<span class="ff1">24bit/192kHz</span>，采用线性脉冲编</div><div class="t m0 x8 h5 y41 ff2 fs2 fc2 sc3 ls5 ws0">码调制（<span class="ff1 ls3">PCM</span>）及“无损压缩编码<span class="_ _0"></span>（<span class="ff1 ls3">MLP</span>）”。另还有些用<span class="_ _0"></span><span class="ff1">DVD-Video</span>制作的音乐<span class="ff1 ls3">DVD</span></div><div class="t m0 x8 h5 y42 ff2 fs2 fc2 sc3 ls5 ws0">唱片，但和<span class="ff1">DVD-Audio</span>不是一回事。<span class="ff1 ls0"> </span></div><div class="t m0 xc h2 y43 ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 y44 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y45 ff1 fs2 fc3 sc4 ls3 ws0">DVD<span class="ff2 ls5">可录光盘（</span>DV<span class="_ _0"></span>D-R<span class="ff2 ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 y46 ff2 fs2 fc2 sc3 ls5 ws0">为一次写入多次读出数据的<span class="ff1 ls3">DVD<span class="_ _0"></span></span>可录光盘。<span class="ff1 ls3">DVD-<span class="_ _0"></span>R</span>可以是单层的（<span class="ff1 ls0">3<span class="_ _2"></span><span class="ff2">．<span class="_ _2"></span></span><span class="ls5">95GB</span></span>），也可以</div><div class="t m0 x8 h5 y47 ff2 fs2 fc2 sc3 ls5 ws0">是双层的（<span class="ff1 ls0">7<span class="_ _2"></span><span class="ff2">．<span class="_ _2"></span></span><span class="ls3">9GB</span></span>）。<span class="ff1 ls0"> </span></div><div class="t m0 xd h2 y48 ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 y49 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y4a ff1 fs2 fc3 sc4 ls5 ws0">DVD-RAM<span class="fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y4b ff2 fs2 fc2 sc3 ls5 ws0">一种供计算机专用的，可擦除可重写的<span class="ff1 ls3">DVD<span class="_ _0"></span></span>光盘。规定的存贮容量为单面<span class="ff1 ls0">2<span class="_ _2"></span><span class="ff2">．<span class="_ _2"></span></span><span class="ls3">6G<span class="_ _0"></span>B</span></span>以及</div><div class="t m0 x8 h5 y4c ff2 fs2 fc2 sc3 ls5 ws0">双面<span class="ff1 ls0">5<span class="_ _2"></span><span class="ff2">．<span class="_ _2"></span></span><span class="ls3">2GB</span><span class="ff2">。<span class="_ _2"></span></span> </span></div><div class="t m0 xe h2 y4d ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 y4e ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y4f ff1 fs2 fc3 sc4 ls3 ws0">DVD<span class="ff2 ls5">只读光盘（</span>DV<span class="_ _0"></span>D-ROM<span class="_ _0"></span><span class="ff2 ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 y50 ff2 fs2 fc2 sc3 ls5 ws0">为一种与<span class="ff1">CD-ROM</span>光盘类似，但容量更大的只读光盘，专供电脑使用。<span class="_ _0"></span><span class="ff1 ls3">DVD-ROM<span class="_ _0"></span></span>可以有</div><div class="t m0 x8 h5 y51 ff2 fs2 fc2 sc3 ls5 ws0">不同的存贮容量，单面单层的<span class="ff1 ls0">4<span class="_ _2"></span><span class="ff2">．<span class="_ _2"></span></span><span class="ls3">7GB<span class="_ _0"></span></span></span>、单面双层<span class="ff1">8.5GB</span>、双面单层<span class="ff1">9.4GB</span>、双层双面</div><div class="t m0 x8 h5 y52 ff2 fs2 fc2 sc3 ls0 ws0">的<span class="_ _2"></span><span class="ff1 ls5">17GB</span>。</div><div class="t m0 xf h2 y53 ff1 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 y54 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y55 ff1 fs2 fc3 sc4 ls5 ws0">DVD-RW<span class="fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y56 ff2 fs2 fc2 sc3 ls5 ws0">由日本索尼公司和荷兰飞利浦公司及美国<span class="ff1 ls3">HP<span class="_ _0"></span></span>公司联合推出的一种存贮容量为<span class="ff1 ls3">3G<span class="_ _0"></span>B</span>的可</div><div class="t m0 x8 h5 y57 ff2 fs2 fc2 sc3 ls5 ws0">擦除和可重写的<span class="ff1 ls3">DVD</span>光盘。与<span class="_ _0"></span><span class="ff1">DVD-RAM</span>类似。目前尚在研制容量可达<span class="ff1">12GB</span>的，因此将</div><div class="t m0 x8 h5 y58 ff2 fs2 fc2 sc3 ls5 ws0">可录入<span class="ff1 ls0">5<span class="_ _2"></span></span>个小时的影视节目。</div><div class="t m0 x10 h2 y59 ff1 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y5a ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y5b ff2 fs2 fc3 sc4 ls5 ws0">动态压缩（<span class="ff1">dynamic compression</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 y5c ff2 fs2 fc2 sc3 ls5 ws0">指在音箱中发音单元所出现的那种当驱动信号增加而<span class="_ _0"></span>声输出仅有少量增加的现象。</div><div class="t m0 x11 h2 y5d ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 y5e ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y5f ff2 fs2 fc3 sc4 ls5 ws0">动态范围（<span class="ff1">dynamic range</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 y60 ff2 fs2 fc2 sc3 ls5 ws0">指信号最强部分与最微弱部分之间的电平差。对于音<span class="_ _0"></span>响器材，动态范围便表示器材对</div><div class="t m0 x8 h5 y61 ff2 fs2 fc2 sc3 ls5 ws0">强弱信号的兼顾处理能力。另对视频信号，则用于指黑白<span class="_ _0"></span>之间的亮度电平差。<span class="ff1 ls0"> </span></div><div class="t m0 x12 h2 y62 ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 y63 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y64 ff2 fs2 fc3 sc4 ls5 ws0">动态范围压缩器（<span class="ff1">dynamic range compressor</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 y65 ff2 fs2 fc2 sc3 ls5 ws0">指在有些装设有杜比数字（<span class="ff1 ls3">DD</span>）解<span class="_ _0"></span>码功能的功放接收机和前置放大器中采用的一种</div><div class="t m0 x8 h6 y66 ff2 fs2 fc2 sc3 ls5 ws0">电路。系用来减少音量的峰值和增加低电平声音的音量。<span class="_ _0"></span>深夜为了不影响邻居或家人</div><div class="t m0 x8 h6 y67 ff2 fs2 fc2 sc3 ls5 ws0">的休息，便可以使用动态范围压缩器来聆听音乐和<span class="_ _0"></span>观看影院节目。此时对于那些低电</div><div class="t m0 x8 h5 y68 ff2 fs2 fc2 sc3 ls5 ws0">平的声音，将仍能清晰可闻。<span class="ff1 ls0"> </span></div><div class="t m0 x13 h2 y69 ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 y6a ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y6b ff2 fs2 fc3 sc4 ls5 ws0">唱臂有效质量（<span class="ff1">effective tonearm mass</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 y6c ff2 fs2 fc2 sc3 ls5 ws0">指唱臂移动部分的总质量和质量沿唱臂总长的分布。靠<span class="_ _0"></span>近支点的质量仅会稍许增加些</div><div class="t m0 x8 h6 y6d ff2 fs2 fc2 sc3 ls5 ws0">唱臂的有效质量，但靠近唱臂唱头处的同样质量则<span class="_ _0"></span>会使有效质量大为增加。为了能够</div><div class="t m0 x8 h6 y6e ff2 fs2 fc2 sc3 ls5 ws0">有最好的性能，唱臂的有效质量必须同唱头的顺性相匹配。</div><div class="t m0 x14 h2 y6f ff1 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y70 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y71 ff2 fs2 fc3 sc4 ls5 ws0">静电式扬声器（<span class="ff1">electrostatic loudspeaker</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 y72 ff2 fs2 fc2 sc3 ls5 ws0">指极薄的振膜在静电力的作用下作前后移动的那类扬<span class="_ _0"></span>声器，和依靠电磁力来使振膜作</div><div class="t m0 x8 h5 y73 ff2 fs2 fc2 sc3 ls5 ws0">前后移动的电动式扬声器是不相同的。<span class="ff1 ls0"> </span></div><div class="t m0 x15 h2 y74 ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x16 h2 y75 ff2 fs0 fc2 sc3 ls0 ws0">页码，<span class="ff1">1/3<span class="_ _3"></span><span class="ff2">视听辞典</span></span></div><div class="t m0 x17 h2 y76 ff1 fs0 fc2 sc3 ls0 ws0">2004-3-1<span class="_ _3"></span><span class="ls8">http://www.avphile.com/dict/index7.htm</span></div></div><div class="pi" data-data='{"ctm":[1.139379,0.000000,0.000000,1.139379,0.000000,0.000000]}'></div></div>
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<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62504c696caf596192fe5f92/bg2.jpg"><div class="t m0 x7 h4 y77 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y78 ff2 fs2 fc3 sc4 ls5 ws0">电磁干扰（<span class="ff1 ls3">EMI</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 y79 ff2 fs2 fc2 sc3 ls5 ws0">指因电磁波的辐射而产生的干扰。<span class="ff1 ls0"> </span></div><div class="t m0 x18 h2 y7a ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 y7b ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y7c ff2 fs2 fc3 sc4 ls5 ws0">包围感（<span class="ff1">envelopment</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 y7d ff2 fs2 fc2 sc3 ls5 ws0">指在聆听音乐时有一种被音乐环绕包围的感觉。比如在用<span class="_ _0"></span>多声道的环绕系统来听音乐</div><div class="t m0 x8 h5 y7e ff2 fs2 fc2 sc3 ls5 ws0">时。<span class="ff1 ls0"> </span></div><div class="t m0 x19 h2 y7f ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 y80 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y81 ff2 fs2 fc3 sc4 ls5 ws0">均衡（<span class="ff1">equalization</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 y82 ff2 fs2 fc2 sc3 ls5 ws0">指在重放录音磁带或<span class="ff1 ls3">LP</span>密纹唱片时<span class="_ _0"></span>，有意削减些高音以便能够同录音时曾经对高音</div><div class="t m0 x8 h5 y83 ff2 fs2 fc2 sc3 ls5 ws0">的提升达到平衡。<span class="ff1 ls0"> </span></div><div class="t m0 x1a h2 y84 ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 y85 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y86 ff2 fs2 fc3 sc4 ls5 ws0">均衡器（<span class="ff1">equalizer</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 y87 ff2 fs2 fc2 sc3 ls5 ws0">指可以用来改变音频节目音调的总体平衡的电路。<span class="_ _0"></span>对低音和高音的加以控制便是均衡</div><div class="t m0 x8 h5 y88 ff2 fs2 fc2 sc3 ls5 ws0">器的一种形式。<span class="ff1 ls0"> </span></div><div class="t m0 x1b h2 y89 ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 y8a ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y8b ff2 fs2 fc3 sc4 ls5 ws0">刺耳（<span class="ff1">etched</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 y8c ff2 fs2 fc2 sc3 ls5 ws0">指一种令人讨厌的因过于突出瞬态音乐信息而常会<span class="_ _0"></span>出现的那种过于明亮的声音。</div><div class="t m0 x1c h2 y8d ff1 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y8e ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y8f ff2 fs2 fc3 sc4 ls5 ws0">延伸（<span class="ff1">extension</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 y90 ff2 fs2 fc2 sc3 ls5 ws0">指音响器材在重放音乐时所能重放出的最高频率或最低<span class="_ _0"></span>频率。</div><div class="t m0 x1d h2 y91 ff1 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 y92 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y93 ff2 fs2 fc3 sc4 ls5 ws0">反馈（<span class="ff1">feedback</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 y94 ff2 fs2 fc2 sc3 ls5 ws0">指在放大器电路中，有意将一部分的输出信号反馈<span class="_ _0"></span>回放大器的输入端。反馈可以减少</div><div class="t m0 x8 h6 y95 ff2 fs2 fc2 sc3 ls5 ws0">失真和使电路工作得更为稳定。</div><div class="t m0 x1e h2 y96 ff1 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 y97 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y98 ff2 fs2 fc3 sc4 ls5 ws0">磁液冷却（<span class="ff1">ferrofluid</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 y99 ff2 fs2 fc2 sc3 ls5 ws0">指填充在发音单元磁隙中的含有微粒磁性材料的液体。是<span class="_ _0"></span>用来让音圈冷却和对移动部</div><div class="t m0 x8 h6 y9a ff2 fs2 fc2 sc3 ls5 ws0">分起阻尼作用的。</div><div class="t m0 x1f h2 y9b ff1 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y9c ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y9d ff2 fs2 fc3 sc4 ls5 ws0">快速傅里叶变换（<span class="ff1 ls3">FFT<span class="_ _0"></span></span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 y9e ff2 fs2 fc2 sc3 ls5 ws0">指将时域中的信息变换到频域中的一种数学运算。<span class="ff1 ls0"> </span></div><div class="t m0 x20 h2 y9f ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 ya0 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 ya1 ff2 fs2 fc3 sc4 ls5 ws0">滤波器（<span class="ff1">filter</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 ya2 ff2 fs2 fc2 sc3 ls5 ws0">指有选择的设法除去或减少某些频率成分的幅度的<span class="_ _0"></span>电子电路。<span class="ff1 ls0"> </span></div><div class="t m0 x21 h2 ya3 ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 ya4 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 ya5 ff2 fs2 fc3 sc4 ls5 ws0">滤波电容器（<span class="ff1">filter capacitor</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 ya6 ff2 fs2 fc2 sc3 ls5 ws0">指在直流供电电源中用来滤去交流<span class="ff1">50Hz</span>纹波的那些滤波电容器。<span class="ff1 ls0"> </span></div><div class="t m0 x22 h2 ya7 ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 ya8 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 ya9 ff2 fs2 fc3 sc4 ls5 ws0">火线（<span class="ff1">firewire</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 yaa ff2 fs2 fc2 sc3 ls5 ws0">也称<span class="ff1">IEEE 1394</span>数字接口。系一种高速的数字视频和数据接口技术。已被美<span class="_ _0"></span>国<span class="ff1">IEEE</span><span class="ls0">采</span></div><div class="t m0 x8 h6 yab ff2 fs2 fc2 sc3 ls5 ws0">纳为新型的标准。用于将数字电视和计算机与其它<span class="_ _0"></span>器材和周边设备连接。比如用于将</div><div class="t m0 x8 h5 yac ff2 fs2 fc2 sc3 ls5 ws0">数字录像机、<span class="ff1">HDTV</span>的机顶盒、数字摄录机等连接起来。<span class="ff1">Firewire</span>为美国苹果公司推</div><div class="t m0 x8 h5 yad ff2 fs2 fc2 sc3 ls5 ws0">出的，类似的还有日本索尼公司的<span class="ff1">iLINK</span>等。<span class="ff1 ls0"> </span></div><div class="t m0 x23 h2 yae ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 yaf ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 yb0 ff2 fs2 fc3 sc4 ls5 ws0">快闪存贮（<span class="ff1">flash memory</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 yb1 ff2 fs2 fc2 sc3 ls5 ws0">简称闪存。系一种不会受影响的永久性随机存贮器（<span class="_ _0"></span><span class="ff1 ls3">RAM</span>）。多半用于由电池供<span class="_ _0"></span>电或</div><div class="t m0 x8 h5 yb2 ff2 fs2 fc2 sc3 ls5 ws0">便携式或数字存贮的器件中。比如数字相机、笔记<span class="_ _0"></span>本电脑以及<span class="ff1 ls3">MP3</span>播放机。可固定<span class="_ _0"></span>装</div><div class="t m0 x8 h6 yb3 ff2 fs2 fc2 sc3 ls5 ws0">放也可方便的取出。</div><div class="t m0 x24 h2 yb4 ff1 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 yb5 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 yb6 ff2 fs2 fc3 sc4 ls5 ws0">平坦（<span class="ff1">flat</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 yb7 ff2 fs2 fc2 sc3 ls5 ws0">对于音箱，便指能够准确地重放所输入音频信号的那<span class="_ _0"></span>类音箱。称之为响应平坦的音箱</div><div class="t m0 x8 h5 yb8 ff2 fs2 fc2 sc3 ls5 ws0">乃因其频率响应曲线甚为平坦。另没有浮凸的平坦<span class="_ _0"></span>则用于描述缺乏纵深感的声场。<span class="ff1 ls0"> </span></div><div class="t m0 x7 h4 yb9 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 yba ff2 fs2 fc3 sc4 ls5 ws0">落地式音箱（<span class="ff1">floorstanding Speaker</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 ybb ff2 fs2 fc2 sc3 ls5 ws0">指不用音箱脚架而直接摆放在地面上的那些大型音箱。<span class="ff1 ls0"> </span></div><div class="t m0 x25 h2 ybc ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 ybd ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 ybe ff2 fs2 fc3 sc4 ls5 ws0">多次回声（<span class="ff1">flutter echo</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 ybf ff2 fs2 fc2 sc3 ls5 ws0">指在房间内的二个表面之间的来回反射。多次回声<span class="_ _0"></span>系由未经处理的平行表面产生的。</div><div class="t m0 x7 h4 yc0 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 yc1 ff2 fs2 fc3 sc4 ls5 ws0">前推（<span class="ff1">forward</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 yc2 ff2 fs2 fc2 sc3 ls5 ws0">指用于表示仿佛将重放出来的声音给抛投到聆听者的面前<span class="_ _0"></span>来似的那种感受的声学术</div><div class="t m0 x8 h6 yc3 ff2 fs2 fc2 sc3 ls5 ws0">语。</div><div class="t m0 xb h2 yc4 ff1 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x16 h2 y75 ff2 fs0 fc2 sc3 ls0 ws0">页码，<span class="ff1">2/3<span class="_ _3"></span><span class="ff2">视听辞典</span></span></div><div class="t m0 x17 h2 y76 ff1 fs0 fc2 sc3 ls0 ws0">2004-3-1<span class="_ _3"></span><span class="ls8">http://www.avphile.com/dict/index7.htm</span></div></div><div class="pi" data-data='{"ctm":[1.139379,0.000000,0.000000,1.139379,0.000000,0.000000]}'></div></div>
<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62504c696caf596192fe5f92/bg3.jpg"><div class="t m0 x7 h4 yc5 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 yc6 ff2 fs2 fc3 sc4 ls5 ws0">帧（<span class="ff1">frame</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 yc7 ff2 fs2 fc2 sc3 ls5 ws0">指一幅完整的视频图像。<span class="ff1">NTSC</span>制成的电视图像每秒便有<span class="ff1 ls3">29<span class="_ _0"></span></span><span class="ls0">．<span class="_ _2"></span><span class="ff1 ls3">97</span></span>帧。帧的一半则称<span class="_ _0"></span>为</div><div class="t m0 x8 h5 yc8 ff2 fs2 fc2 sc3 ls5 ws0">场，比如，我国实施的<span class="ff1">PAL-D</span>制成便每秒有<span class="ff1 ls3">50</span><span class="ls4">场。</span></div><div class="t m0 x26 h2 yc9 ff1 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 yca ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 ycb ff2 fs2 fc3 sc4 ls5 ws0">频率（<span class="ff1">frequency</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 ycc ff2 fs2 fc2 sc3 ls5 ws0">指在一个周期内的重复次数，或每秒的周波数。计<span class="_ _0"></span>量单位为<span class="ff1 ls3">Hz</span><span class="ls0">（<span class="_ _2"></span></span><span class="ff1">Hertz</span>），如频率为</div><div class="t m0 x8 h5 ycd ff1 fs2 fc2 sc3 ls5 ws0">1000Hz<span class="ff2 ls0">（<span class="_ _2"></span></span>1kHz<span class="ff2">）的音频信号每秒便有</span>1000<span class="ff2">个正弦波的周波。</span></div><div class="t m0 x27 h2 yce ff1 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 ycf ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 yd0 ff2 fs2 fc3 sc4 ls5 ws0">频率响应（<span class="ff1">frequency response</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 yd1 ff2 fs2 fc2 sc3 ls5 ws0">指用图表的形式来展示音响器材的相对幅度和频率的函<span class="_ _0"></span>数关系。</div><div class="t m0 x28 h2 yd2 ff1 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 yd3 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 yd4 ff2 fs2 fc3 sc4 ls5 ws0">前端（<span class="ff1">front end</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 yd5 ff2 fs2 fc2 sc3 ls5 ws0">多指音频系统中的音源，如<span class="ff1 ls3">LP</span>电唱<span class="_ _0"></span>盘或<span class="ff1 ls3">CD</span>唱机。有时也指接收调谐器中<span class="_ _0"></span>处理从无线</div><div class="t m0 x8 h6 yd6 ff2 fs2 fc2 sc3 ls5 ws0">电广播中接收信号的前级。</div><div class="t m0 x29 h2 yd7 ff1 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 yd8 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 yd9 ff2 fs2 fc3 sc4 ls5 ws0">前投式投影电视（<span class="ff1">front projector</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 yda ff2 fs2 fc2 sc3 ls5 ws0">指将图像从远处投向单独的大屏幕（对角线尺寸可大到<span class="_ _0"></span><span class="ff1 ls3">25</span>英尺）的视频装置。</div><div class="t m0 x2a h2 ydb ff1 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 ydc ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 ydd ff2 fs2 fc3 sc4 ls5 ws0">丰满（<span class="ff1">full</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 yde ff2 fs2 fc2 sc3 ls5 ws0">指基波相对强于谐波。低频响应良好，虽未必有所延<span class="_ _0"></span>伸，但在<span class="ff1">100Hz</span><span class="ls0">到<span class="_ _2"></span></span><span class="ff1">300Hz</span>的频率</div><div class="t m0 x8 h5 ydf ff2 fs2 fc2 sc3 ls5 ws0">范围内，具有足够的电平。男声在<span class="ff1">125Hz</span>一带相当充足；而女声<span class="_ _0"></span>和小提琴声在<span class="ff1">250Hz</span></div><div class="t m0 x8 h5 ye0 ff2 fs2 fc2 sc3 ls5 ws0">一带也相当充足；萨克斯管在<span class="ff1">250Hz</span><span class="ls0">到<span class="_ _2"></span></span><span class="ff1">400Hz</span>一段也很充足。反义词为<span class="ff1 ls0">"<span class="_ _2"></span><span class="ff2">单</span></span></div><div class="t m0 x8 h5 ye1 ff2 fs2 fc2 sc3 ls0 ws0">薄<span class="_ _2"></span><span class="ff1">"<span class="_ _2"></span></span>（<span class="_ _2"></span><span class="ff1 ls5">thin<span class="ff2">）。</span></span></div><div class="t m0 xe h2 ye2 ff1 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 ye3 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 ye4 ff2 fs2 fc3 sc4 ls5 ws0">宽频带音箱（<span class="ff1">full-range speaker</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 ye5 ff2 fs2 fc2 sc3 ls5 ws0">也称全频段音箱。指能够重放低音以及中音和高音的那<span class="_ _0"></span>类音箱。<span class="ff1 ls0"> </span></div><div class="t m0 x2b h2 ye6 ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 ye7 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 ye8 ff2 fs2 fc3 sc4 ls5 ws0">增益（<span class="ff1">gain</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 ye9 ff2 fs2 fc2 sc3 ls5 ws0">用来表示放大器放大量的数值。放大器如果能够将<span class="_ _0"></span>幅度为<span class="ff1 ls0">0<span class="_ _2"></span><span class="ff2">．<span class="_ _2"></span></span><span class="ls3">1V</span></span>的信号放大到<span class="ff1 ls3">1V<span class="_ _0"></span></span>，便</div><div class="t m0 x8 h5 yea ff2 fs2 fc2 sc3 ls5 ws0">称之为具有<span class="ff1 ls3">10</span>倍的增益。</div><div class="t m0 x2c h2 yeb ff1 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 yec ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 yed ff2 fs2 fc3 sc4 ls5 ws0">柔和（<span class="ff1">gentle</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h5 yee ff2 fs2 fc2 sc3 ls5 ws0">指高次和中频高段的谐波没有被增强甚至还有所削弱。<span class="_ _0"></span>反义词“尖刺”（<span class="ff1">edge</span>）。</div><div class="t m0 x2d h2 yef ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 yf0 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 yf1 ff2 fs2 fc3 sc4 ls5 ws0">闪亮（<span class="ff1">glassy</span><span class="ls0">）<span class="_ _2"></span><span class="ff1 fc2 sc3"> </span></span></div><div class="t m0 x8 h6 yf2 ff2 fs2 fc2 sc3 ls5 ws0">指极为明亮的情况。</div><div class="t m0 x24 h2 yf3 ff1 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 yf4 ff3 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 yf5 ff2 fs2 fc3 sc4 ls5 ws0">颗粒（<span class="ff1">grainy</span><span class="ls0">）<span class="_ _2"></span><span class="ff1"> </span></span></div><div class="t m0 x8 h6 yf6 ff2 fs2 fc2 sc3 ls5 ws0">用于表示器乐或人声在音色上的粗糙程度的声学术语<span class="_ _0"></span>。有点像照片中的那些颗粒。音</div><div class="t m0 x8 h6 yf7 ff2 fs2 fc2 sc3 ls5 ws0">乐听来有些像被分割成许多的小段而不再连续，也不再<span class="_ _0"></span>清澈或通透。系因有谐波失真</div><div class="t m0 x8 h5 yf8 ff2 fs2 fc2 sc3 ls5 ws0">或互调失真所引起的。早期的模拟<span class="ff1 ls0">/<span class="_ _2"></span></span>数字（<span class="ff1 ls3">A/<span class="_ _0"></span>D</span>）变换器和现在一些设计不良的<span class="ff1 ls3">A/<span class="_ _0"></span>D</span><span class="ls0">变</span></div><div class="t m0 x8 h5 yf9 ff2 fs2 fc2 sc3 ls5 ws0">换器便有这样的毛病。粉抹便比颗粒好。<span class="ff1 ls0"> </span></div><div class="t m0 x8 h6 yfa ff2 fs2 fc3 sc3 ls5 ws0">（本小辞典的编撰得到了杨士毅先生的大力支持，本刊<span class="_ _0"></span>谨向杨先生致谢。）</div><div class="t m0 x2e h2 yfb ff1 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x2f h5 yfc ff2 fs2 fc2 sc3 ls5 ws0">编辑<span class="ff1 ls0"> <span class="_ _2"></span></span><span class="ls4">出版<span class="ff1 ls0"> <span class="_ _2"></span></span></span>发行：《视听技术》杂志社<span class="ff1 ls0"> </span></div><div class="t m0 x2f h5 yfd ff2 fs2 fc2 sc3 ls5 ws0">地址：成都市鼓楼南街<span class="ff1 ls3">99</span>号南<span class="_ _0"></span>楼<span class="ff1 ls3">102<span class="ff4 ls0">󴖦<span class="_ _2"></span><span class="ff1"> </span></span></span></div><div class="t m0 x2f h5 yfe ff2 fs2 fc2 sc3 ls5 ws0">邮编：<span class="ff1">610012<span class="ff4">󴖦󴖦</span></span></div><div class="t m0 x30 h2 yff ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x31 h5 yfc ff2 fs2 fc2 sc3 ls5 ws0">编辑部电话：<span class="ff1">(028)86754694<span class="ff4 ls0">󴖦<span class="_ _2"></span></span> 86755537</span></div><div class="t m0 x31 h5 yfd ff2 fs2 fc2 sc3 ls5 ws0">广告部电话：<span class="ff1">(028)86748403<span class="ff4 ls0">󴖦<span class="_ _2"></span></span> 86748669 </span></div><div class="t m0 x31 h5 yfe ff2 fs2 fc2 sc3 ls5 ws0">发行部电话：<span class="ff1">(028)86629602</span></div><div class="t m0 x32 h2 yff ff1 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x16 h2 y75 ff2 fs0 fc2 sc3 ls0 ws0">页码，<span class="ff1">3/3<span class="_ _3"></span><span class="ff2">视听辞典</span></span></div><div class="t m0 x17 h2 y76 ff1 fs0 fc2 sc3 ls0 ws0">2004-3-1<span class="_ _3"></span><span class="ls8">http://www.avphile.com/dict/index7.htm</span></div></div><div class="pi" data-data='{"ctm":[1.139379,0.000000,0.000000,1.139379,0.000000,0.000000]}'></div></div>
<div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62504c696caf596192fe5f92/bg4.jpg"><div class="t m0 x33 h2 y1 ff5 fs0 fc1 sc1 ls0 ws0">1<span class="sc3"> <span class="fc0 sc0">2</span> <span class="fc0 sc0">3</span> <span class="fc0 sc0">4</span> <span class="fc0 sc0">5</span> <span class="fc0 sc0">6</span> <span class="fc0 sc0">7</span> <span class="fc0 sc0">8</span> <span class="fc0 sc0">9</span> <span class="fc0 sc0">10</span> <span class="fc0 sc0">11</span> <span class="fc0 sc0">12</span></span> <span class="fc0 sc0">13</span><span class="sc3"> <span class="fc0 sc0">14</span> <span class="fc0 sc0">15</span> <span class="fc0 sc0">16</span> <span class="fc0 sc0">17</span> <span class="fc0 sc0">18</span> <span class="fc0 sc0">19<span class="_ _0"></span></span></span> <span class="fc0 sc0">20</span> <span class="fc0 sc0">21</span><span class="sc3"> <span class="fc0 sc0">22</span></span> <span class="fc0 sc0">23</span></div><div class="t m0 x34 h2 y2 ff5 fs0 fc0 sc0 ls0 ws0">24<span class="fc1 sc1"> </span>25<span class="fc1 sc1"> </span>26<span class="fc1 sc1"> </span>27<span class="fc2 sc3"> </span></div><div class="t m0 x35 h2 y3 ff6 fs0 fc1 sc1 ls0 ws0">视听技术小辞典（一）<span class="ff5"> <span class="fc2 sc3"> </span></span></div><div class="t m0 x4 h2 y4 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="ff5 fc0">CD</span>】</div><div class="t m0 x4 h2 y5 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="ff5 fc0">CD-ROM</span>】</div><div class="t m0 x4 h2 y6 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="ff5 fc0">VCD</span>】</div><div class="t m0 x4 h3 y7 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">超</span></div><div class="t m0 x6 h2 y8 ff6 fs0 fc0 sc3 ls0 ws0">级<span class="ff5">VCD</span><span class="fc1">】</span></div><div class="t m0 x4 h2 y9 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="ff5 fc0">DVD</span>】</div><div class="t m0 x4 h2 ya ff6 fs0 fc1 sc3 ls0 ws0">【<span class="ff5 fc0">MD</span>】</div><div class="t m0 x4 h2 yb ff6 fs0 fc1 sc3 ls0 ws0">【<span class="ff5 fc0">D/A<span class="ff6">转换器</span></span>】</div><div class="t m0 x4 h2 yc ff6 fs0 fc1 sc3 ls0 ws0">【<span class="ff5 fc0">CD<span class="ff6">转盘</span></span>】</div><div class="t m0 x4 h3 yd ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">超取样</span>】</div><div class="t m0 x4 h2 ye ff6 fs0 fc1 sc3 ls0 ws0">【<span class="ff5 fc0">HDCD</span>】</div><div class="t m0 x4 h2 yf ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">比特<span class="ff5">(bit)</span></span>】</div><div class="t m0 x4 h3 y10 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">比特流</span>】</div><div class="t m0 x4 h2 y11 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="ff5 fc0">THX</span>】</div><div class="t m0 x4 h2 y12 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="ff5 fc0">THX 5.1</span></div><div class="t m0 x36 h3 y13 ff6 fs0 fc1 sc3 ls0 ws0">】</div><div class="t m0 x4 h2 y14 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="ff5 fc0">DTS</span></div><div class="t m0 x5 h3 y15 ff6 fs0 fc1 sc3 ls0 ws0">】</div><div class="t m0 x4 h2 y16 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="ff5 fc0">SRS</span>】</div><div class="t m0 x4 h2 y17 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">杜比<span class="ff5">B</span>，<span class="ff5">C</span>，<span class="ff5">S</span></span>】</div><div class="t m0 x4 h2 y18 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">杜比<span class="ff5">HX Pro</span></span>】</div><div class="t m0 x4 h3 y19 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">杜比环绕声</span>】</div><div class="t m0 x4 h3 y1a ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">杜比定向逻辑</span>】</div><div class="t m0 x4 h3 y1b ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">杜比数字</span>】</div><div class="t m0 x4 h3 y100 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">定向逻辑环绕声放大</span></div><div class="t m0 x4 h3 y101 ff6 fs0 fc0 sc3 ls0 ws0">器<span class="fc1">】</span></div><div class="t m0 x4 h3 y102 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">杜比数字放大器</span>】</div><div class="t m0 x4 h3 y103 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">双放大器分音</span>】</div><div class="t m0 x4 h3 y104 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">双线分音</span>】</div><div class="t m0 x4 h3 y105 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">峰值音乐输出功率</span>】</div><div class="t m0 x4 h3 y106 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">类</span>】</div><div class="t m0 x4 h3 y107 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">甲类</span>】</div><div class="t m0 x4 h3 y108 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">乙类</span>】</div><div class="t m0 x4 h3 y109 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">甲乙类</span>】</div><div class="t m0 x4 h3 y10a ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">失真</span>】</div><div class="t m0 x4 h3 y10b ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">谐波失真</span>】</div><div class="t m0 x4 h2 y10c ff6 fs0 fc1 sc3 ls0 ws0">【<span class="ff5 fc0">AV<span class="ff6">功放</span></span>】</div><div class="t m0 x4 h3 y10d ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">接收机</span>】</div><div class="t m0 x4 h3 y10e ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">分频器</span>】</div><div class="t m0 x4 h3 y10f ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">放大器</span>】</div><div class="t m0 x4 h3 y110 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">功率放大器</span>】</div><div class="t m0 x4 h3 y111 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">前置放大器</span>】</div><div class="t m0 x4 h3 y112 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">后级</span>】</div><div class="t m0 x4 h3 y113 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">前级</span>】</div><div class="t m0 x4 h3 y114 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">合并式放大器</span>】</div><div class="t m0 x4 h3 y115 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">胆机</span>】</div><div class="t m0 x4 h3 y116 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">额</span></div><div class="t m0 x6 h3 y117 ff6 fs0 fc0 sc3 ls0 ws0">定功率<span class="fc1">】</span></div><div class="t m0 x7 h4 y118 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y119 ff5 fs2 fc3 sc4 ls0 ws0">CD<span class="ff8 fc2 sc3">󴖦󴖦󴖦<span class="ff5"> </span></span></div><div class="t m0 x8 h5 y11a ff6 fs2 fc2 sc3 ls1 ws0">索尼和飞利浦公司联手研制的一种<span class="_ _1"></span>数字音乐光盘，有<span class="ff5 ls0">12cm</span>直径和<span class="ff5 ls0">8cm</span>直径两种规格，以前者</div><div class="t m0 x8 h5 y11b ff6 fs2 fc2 sc3 ls1 ws0">最为常见，它能提供<span class="ff5 ls0">74<span class="ff6">分钟的高质量音乐。</span></span></div><div class="t m0 x37 h2 y11c ff5 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 y11d ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y11e ff5 fs2 fc3 sc4 ls0 ws0">CD-ROM<span class="ff8 fc2 sc3">󴖦󴖦󴖦<span class="ff5"> </span></span></div><div class="t m0 x8 h5 y11f ff6 fs2 fc2 sc3 ls1 ws0">用于存储电脑数据的只读型<span class="ff5 ls0">CD<span class="ff6">。</span></span></div><div class="t m0 x38 h2 y120 ff5 fs0 fc2 sc3 ls0 ws0"> </div><div class="t m0 x7 h4 y121 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y122 ff5 fs2 fc3 sc4 ls3 ws0">VCD<span class="ff8 fc2 sc3">󴖦󴖦󴖦<span class="_ _0"></span><span class="ff5 ls0"> </span></span></div><div class="t m0 x8 h5 y123 ff6 fs2 fc2 sc3 ls5 ws0">采用<span class="ff5">MPEG-1</span>压缩编码技术的影音光盘，其图像清晰度和<span class="ff5 ls3">VH<span class="_ _0"></span>S</span>录像带差不多。</div><div class="t m0 x39 h2 y124 ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y125 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y126 ff6 fs2 fc3 sc4 ls5 ws0">超级<span class="ff5 ls3">VCD<span class="ff8 fc2 sc3">󴖦󴖦<span class="_ _0"></span><span class="ff5 ls0"> </span></span></span></div><div class="t m0 x8 h5 y127 ff5 fs2 fc2 sc3 ls3 ws0">VCD<span class="ff6 ls5">的改进产品，采用<span class="ff5">MPEG-2</span>编码，图像<span class="_ _0"></span>清晰度得到了提高。</span></div><div class="t m0 x3a h2 y128 ff5 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 y129 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y12a ff5 fs2 fc3 sc4 ls3 ws0">DVD<span class="fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y12b ff6 fs2 fc2 sc3 ls5 ws0">一种外型类似<span class="ff5 ls3">CD</span>的新一代超大容量光<span class="_ _0"></span>盘，它将广泛应用于高质量的影音节目记录和</div><div class="t m0 x8 h6 y12c ff6 fs2 fc2 sc3 ls5 ws0">用作电脑的海量存储设备。</div><div class="t m0 x29 h2 y12d ff5 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 y12e ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y12f ff5 fs2 fc3 sc4 ls3 ws0">MD<span class="fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y130 ff6 fs2 fc2 sc3 ls5 ws0">索尼公司研制的迷你可录音乐光盘，外型象电脑<span class="_ _0"></span>用<span class="ff5 ls3">3.5</span>英寸软盘，但采用光学<span class="_ _0"></span>信号拾</div><div class="t m0 x8 h5 y131 ff6 fs2 fc2 sc3 ls5 ws0">取系统，类似<span class="ff5 ls3">CD</span><span class="ls0">。<span class="_ _2"></span><span class="ff5 ls3">MD<span class="_ _0"></span></span></span>使用高效的压缩技术来达到与<span class="ff5 ls3">CD<span class="_ _0"></span></span>相同的记录时间，音质则接近</div><div class="t m0 x8 h5 y132 ff5 fs2 fc2 sc3 ls3 ws0">CD<span class="ff6 ls0">。</span></div><div class="t m0 x3b h2 y133 ff5 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 y134 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y135 ff5 fs2 fc3 sc4 ls3 ws0">D/A<span class="ff6 ls5">转换器</span><span class="fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y136 ff6 fs2 fc2 sc3 ls5 ws0">数码音响产品<span class="ff5 ls0">(<span class="_ _2"></span></span>例如<span class="ff5 ls3">CD</span><span class="ls0">、<span class="_ _2"></span></span><span class="ff5">DVD) </span>中将数字音频信号<span class="_ _0"></span>转换为模拟音频信号的装置。<span class="ff5 ls3">D/A<span class="_ _0"></span></span><span class="ls0">转</span></div><div class="t m0 x8 h5 y137 ff6 fs2 fc2 sc3 ls5 ws0">换器可以做成独立的机器，以配合<span class="ff5 ls3">CD<span class="_ _0"></span></span>转盘使用，此时常常称为解码器。</div><div class="t m0 x3c h2 y138 ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y139 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y13a ff5 fs2 fc3 sc4 ls3 ws0">CD<span class="ff6 ls5">转盘</span><span class="fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y13b ff6 fs2 fc2 sc3 ls0 ws0">将<span class="_ _2"></span><span class="ff5 ls3">CD</span><span class="ls5">机的机械传动部分独立出来<span class="_ _0"></span>的机器。</span></div><div class="t m0 x3d h2 y13c ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y13d ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y13e ff6 fs2 fc3 sc4 ls5 ws0">超取样<span class="ff5 fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y13f ff6 fs2 fc2 sc3 ls5 ws0">取样频率数倍于<span class="ff5 ls3">CD</span>制式的标准取<span class="_ _0"></span>样频率<span class="ff5">44.1kHz</span>，其目的是便于<span class="ff5 ls3">D/A</span>转换之后数<span class="_ _0"></span>码噪</div><div class="t m0 x8 h5 y140 ff6 fs2 fc2 sc3 ls5 ws0">声的滤除，改善<span class="ff5 ls3">CD</span>机的高频相位失<span class="_ _0"></span>真。早期的<span class="ff5 ls3">CD</span>机使用<span class="ff5 ls0">2<span class="_ _2"></span></span>倍频或<span class="ff5 ls0">4<span class="_ _2"></span></span>倍频取样<span class="_ _0"></span>，近期的</div><div class="t m0 x8 h5 y141 ff6 fs2 fc2 sc3 ls5 ws0">机器已经达到<span class="ff5 ls0">8<span class="_ _2"></span></span>倍或者更高。</div><div class="t m0 x10 h2 y142 ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y143 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y144 ff5 fs2 fc3 sc4 ls5 ws0">HDCD<span class="fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y145 ff5 fs2 fc2 sc3 ls5 ws1">High Definition Compact Disc<span class="ff6 ws0">（高解析度<span class="ff5 ls3">CD</span>）的缩写——一种改善<span class="ff5 ls3">CD<span class="_ _0"></span></span>音质的编</span></div><div class="t m0 x8 h5 y146 ff6 fs2 fc2 sc3 ls5 ws0">码系统，兼容传统的<span class="ff5 ls3">CD</span>，但需要在<span class="_ _0"></span>带<span class="ff5">HDCD</span><span class="ls4">解码的<span class="ff5 ls3">CD</span></span>机上重放或外接一台<span class="ff5">HDCD</span><span class="ls4">解码器</span></div><div class="t m0 x8 h6 y147 ff6 fs2 fc2 sc3 ls5 ws0">才能获得改善的效果。</div><div class="t m0 x3e h2 y148 ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y149 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y14a ff6 fs2 fc3 sc4 ls5 ws0">比特<span class="ff5">(bit)<span class="fc2 sc3 ls0"> </span></span></div><div class="t m0 x8 h5 y14b ff6 fs2 fc2 sc3 ls5 ws0">二进制数码信号的最小组成单位，它总是取<span class="ff5 ls0">0<span class="_ _2"></span><span class="ff6">或<span class="_ _2"></span></span>1<span class="_ _2"></span></span>两种<span class="_ _0"></span>状态之一。</div><div class="t m0 x3f h2 y14c ff5 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 y14d ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y14e ff6 fs2 fc3 sc4 ls5 ws0">比特流<span class="ff5 fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y14f ff6 fs2 fc2 sc3 ls5 ws0">飞利浦公司的一种将<span class="ff5 ls3">CD</span>数码信号<span class="_ _0"></span>转换成模拟音乐信号的技术。</div><div class="t m0 x40 h2 y150 ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y151 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y152 ff6 fs2 fc3 sc4 ls5 ws0">杜比<span class="ff5 ls0">B<span class="_ _2"></span><span class="ff6">，<span class="_ _2"></span></span>C<span class="_ _2"></span><span class="ff6">，<span class="_ _2"></span></span>S<span class="_ _2"></span><span class="fc2 sc3"> </span></span></div><div class="t m0 x8 h6 y153 ff6 fs2 fc2 sc3 ls5 ws0">美国杜比公司研制的系列磁带降噪系统，用于降低<span class="_ _0"></span>磁带录音产生的“嘶嘶声”，扩</div><div class="t m0 x8 h5 y154 ff6 fs2 fc2 sc3 ls5 ws0">展动态范围。<span class="ff5 ls0">B<span class="_ _2"></span></span>型降噪系统能降噪<span class="ff5">10dB</span><span class="ls0">，<span class="_ _2"></span><span class="ff5">C<span class="_ _2"></span></span></span>型增加到<span class="ff5">20dB</span><span class="ls0">，<span class="_ _2"></span><span class="ff5">S<span class="_ _2"></span></span></span>型则可达<span class="ff5">24dB</span><span class="ls0">。</span></div><div class="t m0 x2e h2 y155 ff5 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 y156 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y157 ff6 fs2 fc3 sc4 ls5 ws0">杜比<span class="ff5">HX Pro<span class="fc2 sc3 ls0"> </span></span></div><div class="t m0 x8 h6 y158 ff6 fs2 fc2 sc3 ls5 ws0">不是降噪系统，而是一种改善磁带高频记录失真<span class="_ _0"></span>的技术，通常也称为“上动态余量</div><div class="t m0 x8 h6 y159 ff6 fs2 fc2 sc3 ls5 ws0">扩展”。</div><div class="t m0 x41 h2 y6f ff5 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 y70 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y71 ff6 fs2 fc3 sc4 ls5 ws0">杜比环绕声<span class="ff5">(Dolby Surround)<span class="fc2 sc3 ls0"> </span></span></div><div class="t m0 x8 h6 y72 ff6 fs2 fc2 sc3 ls5 ws0">一种将后方效果声道编码至立体声信道中的声音。重放<span class="_ _0"></span>时需要一台解码器将环绕声</div><div class="t m0 x8 h6 y15a ff6 fs2 fc2 sc3 ls5 ws0">信号从编码的声音中分离出来。</div><div class="t m0 x1e h2 y15b ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x16 h2 y75 ff6 fs0 fc2 sc3 ls0 ws0">页码，<span class="ff5">1/5<span class="_ _3"></span><span class="ff6">视听辞典</span></span></div><div class="t m0 x17 h2 y76 ff5 fs0 fc2 sc3 ls0 ws0">2004-3-1<span class="_ _3"></span><span class="ls8">http://www.avphile.com/dict/index.htm</span></div></div><div class="pi" data-data='{"ctm":[1.139379,0.000000,0.000000,1.139379,0.000000,0.000000]}'></div></div>
<div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62504c696caf596192fe5f92/bg5.jpg"><div class="t m0 x4 h3 y15c ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">单端放大</span>】</div><div class="t m0 x4 h3 y15d ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">推挽放大</span>】</div><div class="t m0 x4 h3 y15e ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">动态范围</span>】</div><div class="t m0 x4 h3 y15f ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">频率响应</span>】</div><div class="t m0 x4 h3 y160 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">瞬态响应</span>】</div><div class="t m0 x4 h3 y161 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">交越失真</span>】</div><div class="t m0 x4 h3 y162 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">音染</span></div><div class="t m0 x42 h3 y163 ff6 fs0 fc1 sc3 ls0 ws0">】</div><div class="t m0 x4 h3 y164 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">声压</span>】</div><div class="t m0 x4 h3 y165 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">声压级</span>】</div><div class="t m0 x4 h3 y166 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">灵</span></div><div class="t m0 x6 h3 y167 ff6 fs0 fc0 sc3 ls0 ws0">敏度<span class="fc1">】</span></div><div class="t m0 x4 h3 y168 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">电平</span>】</div><div class="t m0 x4 h2 y169 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">分贝<span class="ff5">(dB) </span></span>】</div><div class="t m0 x4 h3 y16a ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">阻尼系数</span>】</div><div class="t m0 x4 h3 y16b ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">反馈</span>】</div><div class="t m0 x4 h3 y16c ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">负反馈</span>】</div><div class="t m0 x4 h3 y16d ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">正反馈</span>】</div><div class="t m0 x4 h2 y16e ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">信噪比（<span class="ff5">S/N</span>）</span>】</div><div class="t m0 x4 h3 y16f ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">正弦波</span>】</div><div class="t m0 x4 h3 y170 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">波长</span>】</div><div class="t m0 x4 h3 y171 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">屏蔽</span>】</div><div class="t m0 x4 h3 y172 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">阻抗匹配</span>】</div><div class="t m0 x4 h3 y173 ff6 fs0 fc1 sc3 ls0 ws0">【<span class="fc0">煲机</span>】</div><div class="t m0 x7 h4 y174 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y175 ff6 fs2 fc3 sc4 ls5 ws0">杜比定向逻辑<span class="ff5 ls0"> </span></div><div class="t m0 x8 h5 y176 ff5 fs2 fc3 sc4 ls5 ws0">(Dolby Pro-Logic)<span class="fc2 sc3 ls0"> </span></div><div class="t m0 x8 h6 y177 ff6 fs2 fc2 sc3 ls5 ws0">在杜比环绕声的基础上增加了一个前方中置声道，以便<span class="_ _0"></span>将影片中的对白锁定到屏幕</div><div class="t m0 x8 h6 y178 ff6 fs2 fc2 sc3 ls5 ws0">上。</div><div class="t m0 xb h2 y179 ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y17a ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y17b ff6 fs2 fc3 sc4 ls5 ws0">杜比数字<span class="ff5">(Dolby Digital)<span class="fc2 sc3 ls0"> </span></span></div><div class="t m0 x8 h5 y17c ff6 fs2 fc2 sc3 ls5 ws0">也称为<span class="ff5">AC-3</span>，杜比实验室发布的新一代家庭影院环绕声系统<span class="_ _0"></span>。其数字化的伴音中包</div><div class="t m0 x8 h5 y17d ff6 fs2 fc2 sc3 ls5 ws0">含左前置、中置、右前置、左环绕、右环绕<span class="ff5 ls0">5<span class="_ _2"></span></span>个声道的信<span class="_ _0"></span>号，它们均是独立的全频带</div><div class="t m0 x8 h5 y17e ff6 fs2 fc2 sc3 ls5 ws0">信号。此外还有一路单独的超低音效果声道，俗<span class="_ _0"></span>称<span class="ff5 ls3">0.1</span>声道。所有这些声道合起<span class="_ _0"></span>来就</div><div class="t m0 x8 h5 y17f ff6 fs2 fc2 sc3 ls5 ws0">是所谓的<span class="ff5 ls3">5.1</span><span class="ls4">声道。</span></div><div class="t m0 x43 h2 y180 ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y181 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y182 ff5 fs2 fc3 sc4 ls3 ws0">AV<span class="ff6 ls5">功放</span><span class="fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y183 ff6 fs2 fc2 sc3 ls5 ws0">专门为家庭影院用途而设计的放大器，一般都具<span class="_ _0"></span>备<span class="ff5 ls3">4 </span>个以上的声道数以及环绕声解</div><div class="t m0 x8 h6 y184 ff6 fs2 fc2 sc3 ls5 ws0">码功能。</div><div class="t m0 x41 h2 y185 ff5 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 y186 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y187 ff6 fs2 fc3 sc4 ls5 ws0">定向逻辑环绕声放大器<span class="ff5 fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y188 ff6 fs2 fc2 sc3 ls5 ws0">带杜比定向逻辑解码功能的<span class="ff5 ls3">AV</span>功放。</div><div class="t m0 x44 h2 y189 ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y18a ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y18b ff6 fs2 fc3 sc4 ls5 ws0">杜比数字放大器<span class="ff5 fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y18c ff6 fs2 fc2 sc3 ls5 ws0">也称为<span class="ff5">AC-3</span>放大器，一种带杜比数字解码功能的<span class="ff5 ls3">AV<span class="_ _0"></span></span>功放。</div><div class="t m0 x45 h2 y18d ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y18e ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y18f ff6 fs2 fc3 sc4 ls5 ws0">接收机<span class="ff5 fc2 sc3 ls0"> </span></div><div class="t m0 x8 h6 y190 ff6 fs2 fc2 sc3 ls5 ws0">带有收音功能的放大器。</div><div class="t m0 x3 h2 y191 ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y192 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y193 ff5 fs2 fc3 sc4 ls3 ws0">THX<span class="fc2 sc3 ls0"> </span></div><div class="t m0 x8 h6 y194 ff6 fs2 fc2 sc3 ls5 ws0">美国卢卡斯影业公司制定的一种环绕声标准，它<span class="_ _0"></span>对杜比定向逻辑环绕系统进行了改</div><div class="t m0 x8 h5 y195 ff6 fs2 fc2 sc3 ls5 ws0">进，使环绕声效果得到进一步的增强。<span class="ff5 ls3">TH<span class="_ _0"></span>X</span>标准对重放器材例如影音源、放大器、<span class="_ _0"></span>音</div><div class="t m0 x8 h6 y196 ff6 fs2 fc2 sc3 ls5 ws0">箱甚至连接线材都有一套比较严格而具体的要求，<span class="_ _0"></span>达到这一标准并经卢卡斯认证通</div><div class="t m0 x8 h5 y197 ff6 fs2 fc2 sc3 ls5 ws0">过的产品，才授予<span class="ff5 ls3">THX</span>标志。</div><div class="t m0 x46 h2 y198 ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y199 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y19a ff5 fs2 fc3 sc4 ls5 ws0">THX 5.1<span class="fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y19b ff6 fs2 fc2 sc3 ls5 ws0">基于杜比数字系统的<span class="ff5 ls3">THX</span><span class="ls0">。</span></div><div class="t m0 x47 h2 y19c ff5 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 y19d ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y19e ff5 fs2 fc3 sc4 ls3 ws0">DTS<span class="fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y19f ff6 fs2 fc2 sc3 ls5 ws0">分离通道家庭影院数码环绕声系统<span class="ff5">(Discrete-channel home cinema digital </span></div><div class="t m0 x8 h5 y1a0 ff5 fs2 fc2 sc3 ls5 ws0">sound system)<span class="ff6">，它也采用独立的</span><span class="ls3">5.1</span><span class="ff6">声道，</span><span class="ls0"> <span class="_ _2"></span></span><span class="ff6">效果达到甚至<span class="_ _0"></span>优于杜比数字环绕声系</span></div><div class="t m0 x8 h6 y1a1 ff6 fs2 fc2 sc3 ls5 ws0">统，是杜比数码环绕声强劲的竞争对手。</div><div class="t m0 x3d h2 y1a2 ff5 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 y1a3 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y1a4 ff5 fs2 fc3 sc4 ls3 ws0">SRS<span class="fc2 sc3 ls0"> </span></div><div class="t m0 x8 h5 y1a5 ff6 fs2 fc2 sc3 ls5 ws0">美国<span class="ff5 ls3">SRS</span>公司的一种用两只音箱<span class="_ _0"></span>产生环绕声效果的系统。</div><div class="t m0 x48 h2 y1a6 ff5 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 y1a7 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y1a8 ff6 fs2 fc3 sc4 ls5 ws0">分频器<span class="ff5 fc2 sc3 ls0"> </span></div><div class="t m0 x8 h6 y1a9 ff6 fs2 fc2 sc3 ls5 ws0">音箱内的一种电路装置，用以将输入的音乐信号<span class="_ _0"></span>分离成高音、中音、低音等不同部</div><div class="t m0 x8 h6 y1aa ff6 fs2 fc2 sc3 ls5 ws0">分，然后分别送入相应的高、中、低音喇叭单元中重放。</div><div class="t m0 x49 h2 y1ab ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y1ac ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y1ad ff6 fs2 fc3 sc4 ls5 ws0">双放大器分音<span class="ff5">(Biamping)<span class="fc2 sc3 ls0"> </span></span></div><div class="t m0 x8 h6 y1ae ff6 fs2 fc2 sc3 ls5 ws0">音箱的每一只喇叭单元由一个独立的放大器通道<span class="_ _0"></span>来进行驱动的一种连接方式。一对</div><div class="t m0 x8 h6 y1af ff6 fs2 fc2 sc3 ls5 ws0">两分频的的音箱需要使用两台立体声功放和两对<span class="_ _0"></span>喇叭线。见“双线分音”。</div><div class="t m0 x2e h2 y1b0 ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y1b1 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y1b2 ff6 fs2 fc3 sc4 ls5 ws0">双线分音<span class="ff5">(Biwiring)<span class="fc2 sc3 ls0"> </span></span></div><div class="t m0 x8 h6 y1b3 ff6 fs2 fc2 sc3 ls5 ws0">用两套喇叭线分别传送音乐信号的高、低音部分的一<span class="_ _0"></span>种接线方式。双线分音需要使</div><div class="t m0 x8 h6 y1b4 ff6 fs2 fc2 sc3 ls5 ws0">用具备两对接线端子的专门设计的音箱。</div><div class="t m0 x3d h2 y1b5 ff5 fs0 fc2 sc3 ls7 ws0"> </div><div class="t m0 x7 h4 y1b6 ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y1b7 ff6 fs2 fc3 sc4 ls5 ws0">放大器<span class="ff5 fc2 sc3 ls0"> </span></div><div class="t m0 x8 h6 y1b8 ff6 fs2 fc2 sc3 ls5 ws0">前置放大器和功率放大器的统称。</div><div class="t m0 x4a h2 y1b9 ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y1ba ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y1bb ff6 fs2 fc3 sc4 ls5 ws0">功率放大器<span class="ff5 fc2 sc3 ls0"> </span></div><div class="t m0 x8 h6 y1bc ff6 fs2 fc2 sc3 ls5 ws0">简称功放，用于增强信号功率以驱动音箱发声的一<span class="_ _0"></span>种电子装置。不带信号源选择、</div><div class="t m0 x8 h6 y1bd ff6 fs2 fc2 sc3 ls5 ws0">音量控制等附属功能的功率放大器称为后级。</div><div class="t m0 x4b h2 y1be ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x7 h4 y1bf ff7 fs1 fc2 sc3 ls0 ws0">z</div><div class="t m0 x8 h5 y1c0 ff6 fs2 fc3 sc4 ls5 ws0">前置放大器<span class="ff5 fc2 sc3 ls0"> </span></div><div class="t m0 x8 h6 y1c1 ff6 fs2 fc2 sc3 ls5 ws0">功放之前的预放大和控制部分，用于增强信号的<span class="_ _0"></span>电压幅度，提供输入信号选择，音</div><div class="t m0 x8 h6 y1c2 ff6 fs2 fc2 sc3 ls5 ws0">调调整和音量控制等功能。前置放大器也称为前<span class="_ _0"></span>级。</div><div class="t m0 x4c h2 y1c3 ff5 fs0 fc2 sc3 ls6 ws0"> </div><div class="t m0 x16 h2 y75 ff6 fs0 fc2 sc3 ls0 ws0">页码，<span class="ff5">2/5<span class="_ _3"></span><span class="ff6">视听辞典</span></span></div><div class="t m0 x17 h2 y76 ff5 fs0 fc2 sc3 ls0 ws0">2004-3-1<span class="_ _3"></span><span class="ls8">http://www.avphile.com/dict/index.htm</span></div></div><div class="pi" data-data='{"ctm":[1.139379,0.000000,0.000000,1.139379,0.000000,0.000000]}'></div></div>
