I just want to know that does any one of you experts have used FFT analysis in their programming.

I have to do FFT analysis using: one dimensional real data i.e. float.
No. of points is 4096

I have tried on of the implementation taken from NET named as FFTReal. I have to compare the outputr result with output from mathematical programming language out put

Ultimate aim is to display Power Spectrum of the signal on time basis.

Any help and suggestion are highly welcomed and i am looking after.

Sandeep Arya