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Hi, I use DIT method to implement FFT. But while I use the same code to execute inverse FFT, anything else I should be careful out there? In the Analog Device application book, only the following two isuues. 1. scale (1/N), and 2. twiddle factor, from (-sin) to (sin) Does it need to bit reverse the input signal (real/imaginary part of the spectrum) before the IFFT module? |