March 2nd, 2019, 06:56 AM  #1 
Member Joined: Feb 2018 From: England Posts: 61 Thanks: 0  Waveform
Hi All, Have been trying to simulate the following waveform but struggling to work out what waveform it approx. represents? 0.91sin (2∏ x 100t) + 0.31 sin (2∏ x 300t) + 0.19 sin (2∏ x 500t) + 0.14 sin (2∏ x 700t) + 0.04 sin (2∏ x 900t) Thanks for any guidance. 
March 2nd, 2019, 07:53 AM  #2  
Math Team Joined: May 2013 From: The Astral plane Posts: 2,205 Thanks: 901 Math Focus: Wibbly wobbly timeywimey stuff.  Quote:
Dan  
March 2nd, 2019, 10:49 AM  #3 
Senior Member Joined: Sep 2015 From: USA Posts: 2,468 Thanks: 1342 
It's 5 terms into being a square wave. The amplitude is about 1.4.. it's probably intended to be $\sqrt{2}$ Last edited by romsek; March 2nd, 2019 at 10:53 AM. 
March 3rd, 2019, 11:34 PM  #4 
Senior Member Joined: Apr 2014 From: UK Posts: 921 Thanks: 331 
And a frequency of 100Hz


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