The Sound of OM

with the sound of OM we say everything

If we analyze OM as it is written in Sanskrit, we see that it is made up of A, U, M, and a symbol representing resonance.  So OM has four aspects.  The first is the A, a sound that comes from the belly, is formed in the open throat, and is voiced with the mouth open.  As with many alphabets, A is the first letter of the Sanskrit alphabet.  The second aspect is the U, a sound that is formed in the middle of the mouth.  The mouth is not as wide open as it is for sounding the A.  With the third sound, M, the mouth closes.  The sound rises to the nasal passages from where the resonance, the fourth aspect of OM issues forth. 

U stands for continuity and connection, and M is the final consonant in the Sanskrit alphabet.  So getting from A to M through U represents everything that can be expressed in words is Isvara (higher divine beings).  When I wound, A, I must open my mouth which stands for the process of creation.   U symoblizes the continuance of creation, which is constantly renewing itself.  M symbolizes the end of dissolution.  Following M the sound carries on a while.  This sound has no alphabetical symbol to represent it.  We can therefore say that Isvara is not only that which can be expressed in words, but also that which cannot be expressed in words.  This is the meaning of OM.

~ The Heart of Yoga, TKV Desikachar