I am not exactly sure what you mean when you say that "higher frequency vibrations seem to absorb the lower ones by a process of light absorption"!
I suppose that you are referring to interference?
When a frequency wave is flowing and it encounters other waves (obstacles), it can get interference and lose power either from interference with other similar waves at the same frequency or from the harmonics of other waves at different frequencies. But, under the right conditions it can also be amplified..
Whether or not a frequency wave gets reflected, refracted, converted to another frequency or absorbed depends on a lot of things. Higher frequencies certainly have more bandwidth and can penetrate certain obstacles, but when frequency waves are very far apart from each other, it is not clear to me how they interact with each other and how energy is transferred from one frequency dimension to another!
Maybe there are specific portals that allow energy transfers between separate frequency dimensions!!!