Listen-shehas begun to read upstairs; there's the sound of a steady hum.

There was a low, steady hum of voices in the distance.

A steady hum, like the sound of an enormous beehive, filled the air.

The generators cycled up and up, reached a high, steady hum, and leveled off.

So the steady hum of traffic was kind of like a white noise machine.

The only sound that came from the phone was the steady hum of the line.

Straining his ears, Steell thought he could hear the steady hum of machinery in motion.

I listen to the steady hum of the train.

A basso whine emanated from the guts of the machine rising to a steady hum.

She could hear chiefly the steady hum of the voices of the executioner and his aids.

From the galley came a steady hum of voices and a rattle of pots and dishes.

The engine immediately ceased its high-pitched, surging struggles, eased back into a consistent and steady hum.

Beyond the darkness there was a steady hum, like the distant whirr of a great machine.

As the propeller blades settled into a steady hum the vibration of the car indicated increased speed.

Jacinto's noises-traffic ,distantvoices, the steady hum of a city-stayedrespectfully outside the high, vine-covered perimeter walls.

The floor polisher continues, a steady hum.