Final answer:
If the broadcaster says the audible has been called, it means the quarterback changed the play at the line of scrimmage.
Step-by-step explanation:
If you heard the broadcaster say that the audible had been called, it means that the quarterback changed the play at the line of scrimmage. An audible is a change in the offensive play called by the quarterback based on the defense's alignment. The purpose of an audible is to adjust the play to take advantage of the defensive weaknesses or to counter their strategy.