imaginery

[gareth1983]

i have a mathematical question which I would like to perform using LabView. I'm suppose to provide a solution to test for duality for the fourier transform and the equation which I have is 1 / (1 + j), where 'j' refers to the imaginery function.

I would like to know, which icon should I use to implement the function? I explored Mathematics >> Numeric >> Complex but it seems that non of these are suitable for implementation. Is there any other alternatives?

[KateB]

Hi gareth1983,

 Put down a numeric constant on black diagram, and right click on it>>Representation>>CSG to change this numeric constant to complex single type.

 Then, type in the constant value, and just use reciprocal function to find 1/x.

Regards, Kate

[mikeporter]

There's also several examples that ship with LV on doing spectral analysis in various ways.

Mike...

[gareth1983]

Please find attached my program, to represent the duality property of fourier transform The output waveform in the frequency domain representation after applying the FT.

I'd applied the fourier transform property to the rectangular waveform to generate the output which is a sinc waveform. However to prove that fourier transform is symmetric, I have to apply a inverse fourier transform to the sinc waveform to get back the rectangular waveform, am I right? Correct me if I'm wrong.

I'm trying to figure out how to apply Inverse FFT to another waveform graph. (Not reflected in the attached program). Can someone help me? what is needed for me to apply the inverse?

[gareth1983]

updated waveform as attached..