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On the Computation of the Discrete Cosine Transform

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2 Author(s)
Narasimha, M.J. ; Stanford Univ., CA ; Peterson, A.M.

An N -point discrete Fourier transform (DFT) algorithm can be used to evaluate a discrete cosine transform by a simple rearrangement of the input data. This method is about two times faster compared to the conventional method which uses a 2N -point DFT.

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Communications, IEEE Transactions on  (Volume:26 ,  Issue: 6 )