Free program online to show guitar frequencies?

[SQUAREHEAD]

Is there anything like this online?
What I have is a few guitars that ‘should’ all sound the same, same wood, same necks, same Frets, same German Floyd Rose, same pickups, but they’re all different, and I mean quite a bit different… Is there something I can download that would actually show me the ‘frequency graph’ each one is putting out, if that makes sense?
Keith

 

[Pseudo Drew Peterson]

You’re gonna need to plug your guitars into one of these.

 

[frthib]

I would record a di of each guitar paying exactly the same thing..

I would then use FabFilter Pro-Q 3 - Equalizer Plug-In to matchEQ the different guitar the see the difference between them

 

[CrazyNutz]

Every hunk of wood sounds different, even if its the same type. This is because the density of the wood is not consistent between trees, and also not consistent between different sections of the trees the wood came from.

Really good Luthier's will hold a block of wood up, tap on it, and listen to the resonant frequency when selecting wood for a guitar.

Anyhow you can use something like Audacity https://www.audacityteam.org/ to compare the wave forms. You would want to record a simple chord so that its easily repeatable on all guitars. You should be able to find plugins like FabFilter Pro-Q 3 frthib mention, might be some stuff built into audacity to help find resonant frequency, etc.. not sure been awhile since i used it.

 

[technomancer]

Most DAWs have some kind of spectrum analyzer built in... even Garage Band I believe has one called Visual EQ

 

[SQUAREHEAD]

OK guys, thank you for all your help…
I will try a few of these things,
I appreciate it