The whispered signal had sounded like a mere preliminary to something more to come.

As the signal sounded, I didn't wait for the car to come to a halt.

"No signal sounded to show anyone tried to cross the magnetized zone around the house."

Frost entered the room only after being told that the signal had sounded.

When the lower rim of the orange sun touched the sea, it was almost as if a signal had sounded for the girl.

Had he not been present, the signal would have sounded once every minute.

Instead, it is assumed that subjects have an understanding of what an ideal signal sounds like and they use this as their own reference.

A few moments later the all-clear signal sounded and again the trucks took up their work.

The Commander wanted to add something when a buzzing signal sounded.

If there are any other coins not in our custody the signal will sound.