麦克风,学名为传声器,由英语microphone(送话器)翻译而来,也称话筒,微音器。麦克风是将声音信号转换为电信号的能量转换器件。分类有动圈式、电容式、驻极体和最近新兴的硅微传声器,此外还有液体传声器和激光传声器。大多数麦克风都是驻极体电容器麦克风,其的工作原理是利用具有永久电荷隔离的聚合材料振动膜。
The video signal which inputs from the pickup camera and the tonic signal which inputs from the microphone become to the digital signal which pass to the capture, A/D transforms,and last transmitted into DSP.
从摄像机输入的视频信号和从麦克风输入的音频信号经采集、A/D转换为数字信号后送入DSP。
参考来源 - 基于DSP的视频采集系统的设计·2,447,543篇论文数据,部分数据来源于NoteExpress
首席歌手手执麦克风,神气地走来走去。
我的手抖得厉害以至于几乎握不住麦克风。
My hand shook so much that I could hardly hold the microphone.
那音乐被麦克风扩大了。
So this of course relies on me having brought some money and we'll have to do this without dislodging the microphone.
要继续我得先拿出来点钱,但我还不能碰掉麦克风
Somebody way over there who's going to be way off camera but we can actually get a mike in there.
那位同学举手了,但是摄像机拍不到,没事,递给他一个麦克风吧
Can I turn on my microphone. Very good idea.
我能不能打开麦克风,好主意
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