G'day,

The throat chakra is associated with the astral.

The spoken word is projected by the throat chakra onto the astral level.

Your higher self is more receptive and proactive on the astral level.

Vibrating the throat chakra with words and tones will affect the energy body in many ways.

Vibrating words deep in the throat is also a part of ritual magic, for the above reasons.

The throat chakra is associated, as said, with obe. But it cannot really be used to induce an obe, due to the deep state of relaxation needed.

You might like to research 'toning' and other ways or using this.

robert