用“波形法”测量群时延失真

Measurement of Group Delay Distortion Using "Waveform Method"

文章介绍了用示波器将输入、输出信号波形相位进行比较的方法来测量相位延迟,然后,再进行换算得到通道的群时延/频率特性值,该方法经济、简便。

Firstly the relative phase delay between the input and output signals is measured on an oscilloscope using comparison method, and then it is converted into the values of group delay/frequency characteristics. The method is quite economical, simple and convenient.