Vignana Bhairava Tantra - 42

Beejakshara Sounds

Pinda Mantrasya Sarvasya Sthoola Varna Kramena tu
Ardhendubindunaadantaha Shoonyoccharaad Bhaveth Shivaha

Pinda is an egg. Egg is a seed, also called Beeja. Mantra is a word, when expanded, reads as Mananath Trayate Iti Mantraha - that sound which protects and liberates the mind. This Tantra says that, when one chants all the Beeja Mantras - letters of the Sanskrit alphabet dotted with a Makara or the sound of mmm...., the mind gets attuned to the most subtle vibrations that merges into consciousness. The way to chant these Bija mantras - for instance Aum...is like this.
Take in a deep breath. Experience the awareness in the navel region. When you exhale, let the breath go out with the sound of Om. After the sound is chanted fully, be with that silence and space. That is the experience of merging with Shiva. - Swahilya Shambhavi.

Vignana Bhairava Tantra - 30

Step by step

Kramadwaadashakam Samyag Dwadashaakshara Bheditam
Sthoolasookshma Parasthithyaa Muktwa Muktwantatah Shivaha

When the 12 centres of the energy in the body are experienced successively by chanting of the seed sounds or the Beeja Aksharas, one gets liberated of the bodies - gross, subtle and beyond and finally merges with Shiva - consciousness. The methods in which the mantras (sounds) can be chanted, may be learnt under the guidance of a Guru. - Swahilya Shambhavi (swahilya.soulmate@gmail.com)