Regarding linear convolution and circular convolution, which of the following statements are correct?

A、Linearconvolutionandcircularconvolutionaredifferentincalculationmethods,sotheresultsobtainedaredifferent.;
B、Undercertainconditions,theresultsoflinearconvolutionandcircularconvolutioncanbeequal.;
C、Theresultofthecircularconvolutionisofphysicalsignificance,soinpracticethecircularconvolutionisgenerallycalculated.;
D、Linearconvolutionandcircularconvolutionareincompletelydifferentcalculationmethods,sothereisnocorrelationbetweenthem.