American Football NCAA Rule 9-2-1-b-5

5. Persons subject to the rules, including bands and audio/video/lighting systems operators, shall not create any noise or distraction that prohibits a team from hearing its signals or obstructs play (Rule 1-1-6).
PENALTY [1-4]—Unsportsmanlike conduct. Dead-ball foul. 15 yards from the succeeding spot [S7 and S27]. Automatic first down for fouls by Team B if not in conflict with other rules. Flagrant offenders, if players or substitutes, shall be ejected [S47].
PENALTY [5]—Unsportsmanlike conduct. The referee may take any action they consider equitable, which includes directing that the down be repeated, including assessing a 15-yard penalty, awarding a score, or suspending or forfeiting the game [S27].