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Zoom FFT in Labview

I want to build a Zoom FFT vi. I know that the sampled signal must be low-filtered and decimated, but first of all frequency shifted. I want to do this by multiplying the real waveform and e^(-jwt) just as reported here

I wonder how to do this complex modulation and then do FFT of this complex waveform.


PS: I don't want to use extra labview toolkit.

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Hi Desk,

the link you provided doesn't work. 

I want to point that what you're try to develop, already exist in a LabVIEW toolkit:



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