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Discussion Groups | Analog Devices DSPs | inverse FFT

Technical discussions related to Analog Devices DSPs (including Blackfin, TigerSHARC, SHARC and ADSP-21xx DSPs).

  

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inverse FFT - bojuchen2000 - Aug 10 12:01:00 2004



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?





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