She could feel the steady, deep hum of power generators all around her.

There was a steady hum as the door moved slowly into place.

There was a glow ahead of them, accompanied by a steady hum.

The conversation was a steady hum, never seeming to rise or to fall.

A steady hum came from the back of the computer, otherwise there was silence.

Just as she reached it, Remy heard a low, steady hum.

There was a steady hum from a million insects communicating with each other in their own little ways.

He was, however, rewarded with the steady hum of power.

The low, steady hum of the thrust drive was gone.

Funny; he hadn't consciously heard their steady hum in a long time.