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'2019-12-31 17:29:06'

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'<p>开一家KTV最重要的除了环境和客户的体验，影响音质的效果也是关键，在选择音响设备的时候各方面配置性能都应该比较好，KTV的设备出现噪音是时有的事，可以使用多种方法，将噪音去掉。下年就跟小编一起来了解一下怎样选择KTV音响设备，以及KTV音响设备出现噪音要怎样解决。</p>

<p style="text-align: center;"><img alt="" src="/uploads/allimg/201912/20191231173128.jpg" style="width: 635px; height: 399px;" /></p>

<p><span style="color:#ff0000;"><strong>一、KTV音响设备如何选择</strong></span></p>

<p>1、KTV包房音箱的选择分为主要音箱和辅助音箱，包房音箱的主要评价是人声的表现力要突出。声音相位要对(听听看能不能把人声送出来，有的音箱会感觉人声在箱体后面)，音乐频响要宽，动态够。</p>

<p>2、KTV音响配置中话筒的选择非常重要，早期的工程商喜欢用舞台专业话筒，直到最近才意识到卡拉OK话筒的专业属性。卡拉OK话筒要求网头经久耐摔、握把抗磨损、开关耐久、引线坚韧，这是最基本的要求。最重要的是卡拉OK话筒必须不那么容易回授啸叫(飞唛)，而且要对人声特别进行优化增强。衰减对人声多余的低频和超高频，使人声的中高频更加凸显，所谓容易出声。</p>

<p>3、KTV功放的选择。KTV功放分为合并式卡拉OK功放以及前后级分开的组合，按照话筒效果类型分为传统ECHO和DSP。选择功放与音箱的搭配非常重要，音箱的阻抗、灵敏度和功率都会影响到功放的选择。</p>

<p><span style="color:#ff0000;"><strong>二、KTV音响设备有噪音如何解决</strong></span></p>

<p>1、指向性选择：扩声系统啸叫与传声器的灵敏度并没有直接关联，但是高灵敏度传声器往往都是锐指向性的。容易产生啸叫，为此在要求较高的场合应该尽量采用无指向性形式。当使用有指向性扬声器时，不得将其朝向传声器。条件允许时最好采用声柱。</p>

<p>2、调整距离法：将传声器尽量靠近有源拾音，缩短声源与传声器发声设备与听众的距离。可以增强直达声，同时提升扩音的响度。养活系统的总增益，既避免啸叫又能提升扩音音量。若同时辅以指向性较宽的近场音箱，稍微离远点就更能避免啸叫。</p>

<p>3、频率均衡法：由于传声器拾音和发声设备的频率曲线不是理想平坦的直线，特别是一些质量比较差的放音设备。由于厅堂声场的声学往往都有谐振作用，使频率响应起伏很大。可以用频率均衡器补偿扩声曲线，把系统的频率响应调成近似的直线。使各频段的频响基本一致进而提高系统的传声增益，这种方法也叫做宽带陷波法。</p>

<p>4、反馈抑制器法：在要求很高的场合，如一些现场演唱的地方，普遍使用声频反馈自动抑制装置。用以自动跟踪反馈点频率，自动调整Q值带宽，自动将声反馈消除而又最大限度地保护了音质。</p>
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