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动圈麦克、电容麦克和驻极体麦克都有什么区别。

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1#
发表于 2011-1-19 11:40:17 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
华为代理商
如果是动圈麦克,可以当耳机用的。一试便知。插头如果不合适,打开一个收音机,将喇叭线引出两根导线(不分极性的)即可。
电容麦克听不到声音。
也可以打开看话筒芯,动圈式的和耳机芯一样,只是大很多,电容式的只是很小的一个圆柱形话筒头儿


用驻极体材料作成的电容式话筒叫驻极体麦克,其结构是由一个张紧的被敷有金属薄膜的振膜和驻极体作 背极组成的平行板电容器。声波作用时,振膜与驻极体背极间的距离改变,使平行板电容器电容量发生变 化,两端电压随之改变,其变化与声振动相对应,完成声电转换过程,这种话筒除具有一般电容话筒的理想 特性外,还具有稳定、体积小、重量轻及抗振性能良好等优点,其指向性也可以在无方向、心 形、8字形间变化。但由于输出信号比较微弱,依然需要加前置放大器。

电容式的麦克,灵敏度高
电容式MIC是通过薄膜的震动改变电容的电荷这种工作原理来工作的,因为电容式的MIC灵敏度高,所以在使用时很难消除环境杂音;但其输出功率比较大,可以使用如声卡一类功率放大功能不强的接入设备。而动圈式MIC是通过薄膜震动带动线圈切割磁力线的方式工作的,因为灵敏度不高,环境杂音的干扰要小很多,但它的输出功率比较小,需要有比较好的功率放大功能的接入设备

你录mp3如果有录音室就用电容式的麦克
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2#
匿名  发表于 2011-1-19 15:24:21
华为代理商
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3#
发表于 2011-5-2 02:05:46 | 只看该作者
华为代理商
谢谢
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