Onomatopoeia - Om Om tap iya or upAya

Onomatopoeia - Repeating the phonetic syllables to form new words that tries to imitate the sounds it makes - like "tick - tick" or "tick-tock"

I believe and researched that AUM was worshiped in Egypt, Crete, Middle East, Greek, Italy, Ireland, Americas and Asia.  There are many pointers including DNA, Linguistics and Archaeology.

OM is AUM.  So someone chanting "AUM - AUM" is doing the "tap" or "effort of hard work" and "upAya" is "method" or it could be adjective "IYA".

So literally someone doing this hard work of process (of worshipping to obtain peace, happiness and salvation) will be described "AUM AUM TAP UPAYA" or "AUM AUM TAP IYA".

There are rules, where for polishing, nasals sounds cane be made of one kind or for musical effects can be made into different kinds. So "N" and "M" are the same family of nasal sounds.

adibatic - AdI bhA t ik - Another Name of Brahman

adibatic - means in Thermodynamics that where no Heat is added or subtracted.

Western Scholars agree that Indians were first ones to understand the Conservation of Energy principles, when stating the Soul is never born or never dies.

There are two kind of souls: individual soul - the wave - and super soul - the ocean.

adI - bhA - t - ik  is beginning +  light (heat) + ness - the essence of Brahman that is not diminished or increased.  The sloka, "aum pURNam adA, pURNam idam,.." describes this Infnite Nature of Brahman,

"bhA" is to shine.  "t' makes it present active noun-adjective that something shines. Light is also carrier of Heat like in Radiation. "ik" makes it "ness" or something which is of that nature.