The rate at which a continuous waveform is sampled is called the ______.

if the period of a pulse waveform increase, the frequency alse increases

in a certain digital waveform, the period is twice the pulse width . the duty cycle is

( ) is not the index of power quality. A: voltage B: current C: frequency D: waveform

After Effects Audio Waveform特效应该施加在下列那些Layer上（）

These transistor circuits can amplify voltage signals with minimum waveform distortion. 下划线介词短语充当_______。

When you zoom in and in on your waveform, you can view a smaller and smaller part of your entire sound file.

Given a signal, [img=31x25]180337898503e1e.png[/img], whose waveform is shown below, the waveform of [img=35x26]180337898da438f.png[/img] is ( )[img=560x347]18033789b1adb02.bmp[/img] A: [img=470x272]18033789ce221e1.bmp[/img] B: [img=464x264]18033789edbf758.bmp[/img] C: [img=442x265]1803378a066832b.bmp[/img] D: [img=458x267]1803378a240c8b8.bmp[/img]

To measure the period of a pulse waveform, you must use( ) A: a DMM B: a logic probe C: an oscilloscope D: a logic pulser

中国大学MOOC: These transistor（晶体管） circuits can amplify（放大） voltage signals with minimum waveform distortion（波形失真）. 下划线介词短语充当_______。