Re: lvanlys.dll Real IFT function change from version 6.1 to version 7

2004-02-10 Thread rdanell
Well that certainly did it. Thank you very much for your time in looking at this so quickly. This is definitely a point that I missed. It is interesting that LabVIEW 6.1 handled this error okay, but I am happy to know the correct way to build the input waveform. Thanks again.

Re: lvanlys.dll Real IFT function change from version 6.1 to version 7

2004-02-09 Thread yrao
From the input spectrum data (magnitude and phase), I can tell the complex input data to the inverse FFT is not DFT Symmetric. In order to compute correct Real Inverse FFT, the input complex vector must be even symmetric on the real part and odd symetric on the imaginary part ( it is in the DFT

Re: lvanlys.dll Real IFT function change from version 6.1 to version 7

2004-02-09 Thread LocalDSP
Could you please post your actual benchmark VI with your input test data saved as default (or optionally embedded as constants on the block diagram) and we will of course take a closer look at the issues. Thank you