Inner Sound

The inner sound has also been developed as a spiritual path or reference point in almost all the religions, traditions and philosophies worldwide. It has been said that it goes by the following names in these various scriptures and philosophical works:

• AUM, Naad, Akash Bani and Sruti in the Vedas
• Nada and Udgit in the Upanishads
• Akshar in the Bhagavad Gita
• The music of the spheres taught by Pythagoras
• Sraosha by Zoroaster
• Kalma and Kalam-i-Qadim in the Qur’an
• Word and Water of Life in the Bible
• The Divine Wine and HU by the Sufis
• Hari Ras and Amrit by Saints and Mystics
• Naam, Akhand Kirtan and Sacha Shabd in the Guru Granth Sahib
• Logos in Greek and Hebrew metaphysics, the unifying principle of the world.

It is called variously as Sruti or Shruti (that which is heard), Shabd (word) or Akash bani (voice from the heaven), Sraosha (music of the beyond), Harmony, Logos, Kalma or Bang-i-Ilahi (call from God) or Nida-i-Asmani (heavenly sound).  

Aum is the universal sound, and is not religious in nature. Armaic used by Jews including Christianity they close it with Amen said as Aaammeeennnn (take off n and say), in US it's said A-Man and Islam says Ameen.

When Ram came to South, people called him Rama, Raman. Krishn became Krishna and Krishnan. Infliction of  'N'

A , U , Mm - Do not need the use of the tongue.  Just like in clour television there are only three basic colours - Red, blue and Green. Tongue is helping to mix these sounds in different ways. 

Om is basically a monosyllabic word, as compared to Aum, which is tri-syllabic. Om is simply pronounced the way it is written as opposed to Aum, which is pronounced aa-uu-eemm. In Sanskrit, 'O' is a diphthong sound. This means that it is formed by combining the two sounds 'A' and 'U'.

Daily utterance of AUM will have a phenomenal difference in your existence.