Ive been working on this for about 3 months now tho ive been formulating the meditation for over a year. I found that merkaba visualization is a good method for this.
I posted my meditation on another forum ill link if youd like.
The meditation involves tracing your meridian network and then visualizing a merkaba to stimulate all your chakras at once. It results in a very vibratory state where clairaudience and clairvoyence are keen.
I can not usually hear spirits but using this method i heard them for the first time. Im still imrpoving it so criticism is welcomed