The Quest for Inner Sound
Perceiving the astral sounds
Chanting “AUM / OM” in each one of the chakras is an art. Om should be accompanied by an unswerving will to track down the echo of this vibration until you become aware of the astral sounds.
Listening to the sound like a ''flute'' of the breath Make the sound of the breath subtler and subtler. The exhalation arising in the nasal pharynx has a fine sound like a faint whistle. Symbolically speaking they say it is the "flute of Krishna". "similar to blowing air through a keyhole", This sound is produced in the upper part of the nasal pharynx. Now then, this flute sound is one thing and the astral sounds is another thing. However, a long concentration upon the flute-like sound is the best action to listen to the internal astral sounds. These sounds come from the activity of the Chakras. A great experience is hearing a distant sound of a long-sustaining bell (the sound of Anahata.) The experience of the ''bell''changes into the sound of ''many waters.'' This is the real sound of Om that guides the soul to travel through the spine, contacting the Divine Light in the upper part of the head.
Usually we do not notice the exact instant when we start listening to the internal sounds: at a certain point we notice we are already listening to them since some time. The internal sounds don't appear when the mind is active thinking, but only when it is perfectly void, even void of the I consciousness, void of the thought you are doing a certain practice. When we reach a total void (to some this state seems having entered the sleep state), when the repetition of the Mantra has created a transformation of our state of consciousness, we will be surprised by a certain indefinite internal sound.
ॐ शान्ति: शान्ति: शान्ति: ॥