As the Mandukya Upanishad tells us the perfect state or super conscious state and all that precedes it are a part of Om. The sound can also be displayed in its more complete form of Aum. When written this way it appears as if the sound has three parts. In actuality it has four.
The A (aahhh) sound represents the creation aspect of the universe and all of the gross objects within it. Ahh is the beginning of all sounds. This is the most common letter that starts alphabets. It connects us to our sense of self, the ego. With this syllable you experience the existence of the world through the activity of the senses. When you chant this sound notice that it is produced in the throat and back of the mouth where the tongue is rooted and resonates in the lower abdomen. The first sound embodies “Sat”, the sound that starts to bring you back to unity, to the truth of your existence.
The U (oooh) sound signifies the maintaining energy of the universe and the subtle impressions of the mind. It connects us to an inner sense of something greater than that which we can see and feel with our senses. Oooh lets in lightness, clarity, balance and goodness. When you chant this letter the sound moves forward between the tongue and the palate up to the lips and vibrates in the solar plexus. The sound denotes “Chit”, an illumination of knowing, pure wisdom.
The M (mmmm) sound characterizes the transformative energy of the universe and the thoughts and beliefs of your being. This sound unites you to the awareness of oneness. It allows you to slow down in order to feel the connectedness of all that is. The sound “mmmm” is produced by closing the lips and it vibrates the crown of the head. The sound symbolizes “Ananda”, to be at one with bliss everywhere with all things.
The fourth sound is silence oranagata. It is the vibration which is beyond verbal pronunciation. It is pure consciousness of the Self or the Atman. The unity of Sat Chit Ananda (I exist, I know, I am blissful) is experienced here.