beat frequency?

[antissa]

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Hey guys, on AAMC 6R, there's a question about beat frequency and the answer turns out to be just f2-f1
Still, I remember doing problems in physics class where we use (f2-f1)/2 for beat frequency. When do you use what formula? 😕

 

[willthatsall]

never heard of it

*the division part, that is. I've heard of beat frequency.

 

[TiggidyTooth]

For figuring beat frequency, it's always f2-f1. No tricks or divisions.

Tooth

 

[antissa]

#17 on 6R PS
It's the difference in frequency between 2 signals

 

[Groove]

I ran across that same question today when taking 6r. If I remember correctly from EK's materials, it's always the absolute value of |f2-f1|