天气预报 > 科技 > 留声机原理
留声机原理
更新时间: 2021-03-27 21:01:47  

1、留声机黑色唱盘上,声音振动由一条波浪起伏的轨道或沟槽来实现,在唱盘平面上的波动,尽可能准确地再现声波的压力变化。

2、当唱针沿着沟槽移动,针尖随沟槽波动而轻微地振动。这个振动通过机械装置传送一个膜而将其放大并散发在空气中。

关键词: 留声机 原理

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