Jump to content

Use Chirp Z transform to refine spectrum


bodopoq

Recommended Posts

     When using ChirpZ transform of LabVIEW(The example itself provides) to refining the spectrum, I found a strange thing. When the frequency is very big and the range is small together with a not small number of ChirpZ transform, Error happened(very bad spectrum and wrong frequency ChirpZ's result is)! Nothing is wrong with the examples(I've scripted other VIs to verify this), and this error didn't happend using MATLAB. So I believe that is a bug of LabVIEW!!!(Not Sure yet of course). I Need Help!
     Is there any error? Or is there a bug of LabVIEW's ChirpZ tansform?
     I've already uploaded the codes and screenshot.May you have a look.

Chirp Z Transform Configuration.vi

Multi Tone Signal Generation.vi

Spectrum using Chirp Z Transform.vi

post-53024-0-62870100-1418220972_thumb.p

post-53024-0-03242100-1418220980_thumb.p

Edited by bodopoq
Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.