White Noise Mind Suggestion Combat Experimentation

White Noise is a term that describes a lack of sound being projected over an area. White Noise often manifests as a ringing in the ears.

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.