falling edge

The extraction methods of pulse signal envelope feature using the complex wavelet transform and Hilbert transform are discussed in the article, by which we extract the rising edge, falling edge, envelope top drop and pulse width as the final feature values.

研究了对脉冲信号包络特征的提取方法，利用复小波变换和希尔伯特变换获取稳态信号包络，提取上升沿、下降沿、包络顶降以及脉宽等参数作为稳态特征。

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a transition in a logic signal from a logic high to a logic low is referred to as a falling edge.

逻辑信号从高电平到低电平的转换被称为下降沿。

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able to count max 10 pulses per second, detect pulse on rising or falling edge.

能指望每秒最多10个脉冲，检测上升沿或下降沿脉冲。

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