The article surveys how to use IRLED to setup the IR voice communication system and to use pre-emphasis and de-emphasis to lower the noise and improve the width and length of the transmission field.

 
  • 本文探讨如何运用近红外光二极体去实现红外线声音通讯,并利用前置强调与去强调的方法降低杂讯,使可传送的范围及距离增加。
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