Labview IFFT using Complex numbers

[kengkc]

Hi,

      I am currently trying to get my time domain waveform by using IFFT from frequency domain. I have discovered that the IFFT.vi has a selection of real and complex numbers. Currently, I wonder what is the complex format for the input of IFFT, is it x +i*y? If it is x+i*y, I wonder if it is correct to use the real and img.vi to convert to the said format, since I have a set of real and imgainary data. Thank you.

Rdgs

Chew

[altenbach]

The input to IFFT is a 1D or 2D array of double precision complex datatype (CDB).

So, yes, if you have RE and IM as two DBL arrays, you need to use "Re/Im to complex" to form the complex datatype for the input to IFFT.

Message Edited by altenbach on 07-13-2008 01:50 AM

[kengkc]

Hi,

       Thanks a lot.

Rdgs

Chew