Page 126 The sounds of silence it tells you exactly what the purpose is and how it is done. Just fill in the blanks yourself. Experiment.
When doing what is called Belials Black alchemy, your bringing the Qliphothic spheres and energy into your being. Then releasing them.
After you have done that.
Vibrate the sounds of silence.
11 times each until all 22 sounds of silence have been vibrated. To activate/Anchor the tree of knowledge within. You don’t have to release the sounds of silence.
I personaly don’t call upon the Gatekeepers when doing this. I’m working with the qlippoth and the tunnels.