A.randint()B.genqammod()C.conv()D.upsample()
A.df/2B.(df+1)/2C.(df-1)/2D.df/3
A.降低復(fù)雜度B.提高實(shí)時(shí)性C.譯碼器簡(jiǎn)單D.算法效率降低