As he got closer, the sound increased, but way out of proportion.

There was no answer, but the sound increased as hurried steps moved towards him.

The mood of the neighborhood changed as the sound increased.

But then the sound increased, became a presence in the surrounding air.

The sound of the wind increased, and the plane began to rise straight up.

The sounds increased in volume, and I felt that they were approaching.

As she pulled it off, the foreign sound increased in volume.

When their sound increased, her body began to jerk violently.

Yet the sound increased - and what could I do?

As the control is turned up, the sound will increase in brightness.