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FFT in DSPLIB, is it working?

erik2
Associate II
Posted on June 11, 2007 at 11:11

FFT in DSPLIB, is it working?

1 REPLY 1
erik2
Associate II
Posted on May 17, 2011 at 09:44

I’ve struggled a bit with the FFT from the DSPLIB.

To me it looks like it’s not working correctly.

I’ve tested the algorithm with the test done in the doc. 4.2 (table 4)

The result is a bit strange. When I use a sine wave the imag-part is correct if you take the complex-conjugate but the real-part is zero. When I use a co-sine wave the real-part is correct but not the imag-part.

Has someone got the FFT up and running correctly?