Standard: The green is compressed, travels down to the bottom (red), expands (green), then resonates in that manner !!
Vintage: The green is compressed, travels(blue), then expands (red), then travels to the bottom, compresses again (blue) then expands again (green), then resonates in that manner.
The blue is the sound difference you can`t get without re-rings that vintage drums started with.
Note: Concert toms are different only in resonate values, they don`t !!
My two !!
Sound takes the shape of it`s container !!
That`s as tec. as I`m gett`n !!
Oddball - where did you find that sonic color chart? I'd like to read more about it.
John
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Great contribution, thanks... DOH
I'm going to hunt around for some sound test data for drums, if any exists. I'll post a link if I turn anything up.
John
... wow ... just wow ...
I found this site:
http://courses.physics.illinois.edu/phys193/NSF_REU_Reports/2003_reu/Eric_Macaulay_Final_Paper.pdf
Interesting paper, well worth a read especially if you're a drum geek. It gets very technical in parts, but enough of it is understandable to the average layman so again, worth a read.
John
It is interesting that the article mentioned the double 45 has the best energy transfer. I was seconding whoever said that they probably used the double 45 to save cost and time of different tooling!, and I would have guessed that more contact area = better. Maybe they actually were onto a little something.....LOL. Or, they just got lucky and saved money as a bonus!
Dan - the extra transfer of energy in the dbl. 45 set-up explains why modern drums with those edges project so well as compared to vintage round-over kits which do not.
We just sit there and hit the drums, but there is a lot going on when we do! Lots of physics involved. I only wish I understood more of the charts they showed. I know I'm missing out on tons of information simply because I don't have the right knowledge to understand several parts of the study. However, the parts I could understand explain a lot. I'll see if I can't dig up some more. There is a bunch of stuff I found along the way where vintage kits/snares are compared to each other, but they are just sound files. No real explanation about how those sounds are built into the drums. Something to check out though, some of the kits they use are vintage classics. Always fun to get a chance to hear them.
John
