Welcome Guest Search | Active Topics |

Tag as favorite
Beat Frequency Equation
Bryan_6554
#1 Posted : Sunday, June 27, 2021 9:45:55 PM
Rank: Newbie

Groups: Registered
Joined: 4/27/2021
Posts: 0

Thanks: 0 times
Was thanked: 0 time(s) in 0 post(s)
Hey Forum,

I was looking over my notes and noticed that the beat frequency equation is different from the one I previously learned. I've known it as fbeat = |f2-f1|, but it's written as fbeat = |f1-f2|. Is this to compensate for the +/- frequency when solving for either f2 or f1?

Warm regards,
Bryan
INSTR_Katrina_128
#2 Posted : Tuesday, June 29, 2021 4:59:12 PM
Rank: Advanced Member

Groups: Registered
Joined: 5/18/2021
Posts: 73

Thanks: 0 times
Was thanked: 0 time(s) in 0 post(s)
Hi Bryan,

Yes.

But, notice the absolute value signs (the vertical bars)? Thus, it doesn't matter the order in which the math is done.

So if we say that f1 = 100 Hz and f2 = 110 Hz,

Then, f1 - f2 or f2 - f1 will result in -10 Hz and 10 Hz, respectively, and |f1 - f2| and |f2 - f1| are BOTH equal to 10 Hz. So, the equations are the same thing! 😀

Overall, the beat frequency formula tells you the MAGNITUDE (or the +/-, like that said).
Users browsing this topic
Guest (2)
Tag as favorite
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Clean Slate theme by Jaben Cargman (Tiny Gecko)
Powered by YAF | YAF © 2003-2009, Yet Another Forum.NET
This page was generated in 0.082 seconds.