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Problem about frequency filtering help me

  1. Nov 13, 2009 #1
    Problem about frequency filtering help me plz urgent

    1. The problem statement, all variables and given/known data
    I received sensor's volts and professor says "plot the volts ,Fourier transform, analyze data and design low pass filter"
    it is attached "data.zip"
    << zip file deleted by Mentors >>
    it has 4 data in matlab
    1 is ploted volts 사진1.jpg
    2 is transformed volts ploted 사진2-3.jpg

    2. Relevant equations
    nothing?
    low pass filtering



    3. The attempt at a solution
    how to analyze data (find period properties and frequencys)
    how to find cut off frequency
    Help me plz
     
    Last edited: Nov 14, 2009
  2. jcsd
  3. Nov 13, 2009 #2

    berkeman

    User Avatar

    Staff: Mentor

    Re: Problem about frequency filtering help me plz

    Please do not post ZIP attachments. Please post in PDF or JPG formats.
     
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