What we are referring now is the most extremely ancient sound formed due to the vibration of the whole Universe, and in terms of purity, this is the purest form created totally on realm and no other forms of sound can even come near it.
Great spiritual teachers and yoga masters draw tremendous

The other day, I tried to say the "OM" sound loudly *of course when no one was around*, the effect was shocking! My whole body practically vibrated, and I felt energy penetrating my deepest tissues and cells! Blood circulation was quickened and there was a rash of excitement due to the flow of more oxygen.
Maria Duval says this is result of my body atoms interacting with the primordial vibrations of the universal energy.
Try it! Everything vibrates to this sound. Close your mouth, use your throat region to force out this OM's bassy tone. If you have powerful OM tone, perhaps you can set your wooden furniture creaking!