So say that blue wave has a frequency f1 and wave two has a frequency f2 then I can find the beat frequency by just taking the difference. The beat frequency is equal to the absolute value of the difference in frequency of the two waves. A beat frequency oscillator Some people are sensitive to beat frequencies the difference between flickering sources at two different rates The separation distance of images of your hand would be the velocity of your hand divided by the beat frequency or as a formula.
So say that blue wave has a frequency f1 and wave two has a frequency f2 then I can find the beat frequency by just taking the difference.
F beat f 1 f 2 displaystyle f_ text beatf_ 1-f_ 2 This can be seen on the adjacent diagram. One over the beat period whats one over the beat period. That means if the 1x rpm component and the line frequency component have similar amplitudes there will be a beat frequency occurring at 20 cpm. Hence beat frequency is 170 H z.