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fft,dft

Discussion in 'Mathematics and Physics' started by aswin p ajayan, Mar 15, 2014.

  1. aswin p ajayan

    aswin p ajayan Member

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    hi guys,
    I am a newbie
    i need to get frequency vs magnitude plot of sampled signal . I learned fft for that . but i am not sure how to scale frequency. can any body help me please . or just give the links of some pdf's which might be usefull . iam using pic 18f4550
     
  2. rc3po

    rc3po Banned

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    Hello Aswin,
    I'm new here also and haven't learned about uControllers yet. I have an Arduino starter kit ordered that should arrive next week.
    Do you have an oscilloscope? Can you probe the pic with a scope and find what you need?
     
    Last edited: Mar 17, 2014
  3. aswin p ajayan

    aswin p ajayan Member

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    actually what i want to perform a harmonic analysis on a composite signal. ie I dont know the out put freq to caliberate in the way you explained . any way thanks for the attention
     
  4. dave

    Dave New Member

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  5. misterT

    misterT Well-Known Member Most Helpful Member

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    http://www.dspguide.com/pdfbook.htm
     
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