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关于 C674x DSPLIB中Efficient FFT Computation of Real Input问题。



如图所示为使用COMPLEX FFT,与Efficient FFT Computation of Real Input的CCS5.5中CLOCK计时读数。(8192点的)

下图所示为TI提供的性能对比,请问为何使用Efficient FFT Computation of Real Input时,效率反而下降?

  • 如图所示为使用COMPLEX FFT,与Efficient FFT Computation of Real Input的CCS5.5中CLOCK计时读数。(8192点的)

    下图示为TI提供的性能对比,请问为何使用Efficient FFT Computation of Real Input时,效率反而下降?