求助有源低通滤波器−3-dB frequency at 1 Hz什么意思
看一篇外文文献,说的是有源滤波器,−3-dBfrequencyat1Hz是什么意思啊?下面是一整段话Alltheanaloguesignalconditioningpathsconcludedwithacorrespondingunitygainfourpolelowpassfilter,eachwitha−3-dBfrequencyat1Hztominimizethenoiseandinterferenc