Abstract
A previously proposed algorithm for the FFT (fast Fourier transform) computation of real symmetric and antisymmetric sequences reduced the N-point symmetric FFT computation to a N/4-point complex FFT computation, but the postprocessing involved division by sin(2 pi k/N). For large size N, this may cause stability problems. An algorithm is presented which overcomes the problem for real symmetric and antisymmetric data sequences. A similar algorithm is given for the translational complex conjugate symmetric data sequence. >
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