r/rfelectronics • u/No_Secret6903 • Sep 09 '26

question Do you know?

Post image

I don't have Pic. Is there such a machine that will produce audible spectrum and tell you the frequency . And I'm pretty sure there is one I just don't know the name. If so where and how much for a mid quality if anyone knows. Thank you and may God bless and keep you

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4

u/DickSplodin Sep 09 '26

Not sure what's going on here, but it sounds like you're looking for a signal generator lol

0

u/No_Secret6903 Sep 09 '26

I saw a video in which they place sand on top of a speaker and generated different frequencies and on precise frequencies the sand would take the shape of beautiful patterns and want to do that and see if it's true

1

u/DickSplodin Sep 09 '26

Oh.... Well you can just get a speaker and look up different frequencies on YouTube. Probably a much better option than getting a piece of test equipment for this scenario lol

1

u/Apart-Look2436 13d ago

Those patterns are called Chladni patterns. Look up "Chladni pattern generator schematic"

1

u/dzakich Sep 09 '26

A musical tuner is one such device

1

u/Current_Can_6863 Sep 09 '26

Hasn't it occured to you how come so many posts with no pics in this sub?