Sketching principle Harmonics

Discussion in 'Homework Help' started by CNC682, May 14, 2015.

  1. CNC682

    Thread Starter New Member

    Jan 23, 2015
    25
    1
    synthesise the shape of the original waveform from its
    principal harmonics [e.g. sketch the waveforms of the harmonics on
    the same time axis and add them together].


    upload_2015-5-14_18-34-45.png

    I don't have a function to work with. I have the 3 principle harmonics (the peaks.) How would I add them together to create the original waveform?
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,138
    1,789
    I would use a spreadsheet, or one of the free Matlab clones.
     
  3. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
    1,066
    Or how about LTSpice? I synthesized the wave, and took the FFT to compare to the original.

    213.gif
     
  4. CNC682

    Thread Starter New Member

    Jan 23, 2015
    25
    1
    Thanks! That looks similiar to my free draw sketch
     
  5. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
    1,066
    Yes, but can free sketch do the FFT?

    How did you decide what delay to put between the fundamental and the harmonics?
     
Loading...