Introduction - If you have any usage issues, please Google them yourself
This paper proposes a hybrid architecture
algorithm for fast computation of DCT and DFT via
recursive factorization. Recursive factorization of DCT-II
and DFT transform matrix leads to a similar architectural
structure so that common architectural base may be used by
simply adding a switching device. Linking between two
transforms was derived based on matrix recursion
formula. Also computational complexity is comparable to
those of the fast DCT algorithms for moderate size of N.