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Labview实现脉波调制( PDM )

作者：时间：2016-12-27 来源：网络

根据定义为脉冲宽度调制

生成一个正弦信号，得到其幅值输入给一个方波信号的占空比
由于方波信号的占空比里面含有正弦信号的信息
因此通过滤出方波信号的占空比信息则可以恢复波形

PDM输出图2：

对比分析两次的PDM图形，方波信号的占空比一直在持续变化，变化的根据就是正弦信号的幅值。
结果图中，正弦信号恢复准确

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关键词： Labview脉波调制PD

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