White Noise Mind Suggestion Combat Experimentation

White Noise is a sound designed to open up its target to posthypnotic suggestions.

In Vault 92's experiment, musicians were secretly exposed to the noise to study possible applications. Unknown to Professor Malleus, the scientist in charge, Vault 92's Overseer exposed all vault residents to the sound in their sleep and "programmed" them with additional directives. These directives were provided by Vault-Tec and were supposed to turn the vault inhabitants into soldiers who would carry out any order and feel no pain.

The experiment ultimately failed as the subjects went insane and killed everybody else in the Vault.

Holotapes
There are several holotapes in Vault 92 concerning the mind control project. They give a backstory on how things went wrong and how the scientist slowly discovered the Overseer's true intentions.