A.對(duì)于連續(xù)時(shí)間復(fù)指數(shù)信號(hào),不同的頻率對(duì)應(yīng)不同的信號(hào),當(dāng)頻率增大時(shí),對(duì)應(yīng)的信號(hào)振蕩頻率越來越高,不會(huì)發(fā)生逆轉(zhuǎn)
B.對(duì)于離散時(shí)間復(fù)指數(shù)信號(hào),在頻域具有周期重復(fù)性
C.對(duì)于連續(xù)時(shí)間復(fù)指數(shù)信號(hào),在時(shí)域是周期的
D.對(duì)于離散時(shí)間復(fù)指數(shù)信號(hào),在時(shí)域也是周期的
A.時(shí)移
B.時(shí)反
C.尺度變換
D.幅度變換