Orthogonal Transform o An important consequence of the orthogonality of the basis sequence is energy preservation property of the transform ∑ 可=∑xi N k=0Orthogonal Transform ⚫ An important consequence of the orthogonality of the basis sequence is energy preservation property of the transform     1 1 2 2 0 0 1 N N n k x n X k N − − = =   =