Then a steady humming noise began to emanate from Cindy's room, right next door.

As he did, the steady humming noise and the vibration under his feet became louder.

Here also the shaft was visible but from it came a steady humming noise.

I heard the steady noise of the atmosphere rushing by outside.

All was quiet there, just the strong, steady, reassuring noise of her breathing.

I shouted over the steady noise of the big engine.

After the steady noise of the engines, the silence was almost oppressive.

This sort of thing works best on steady noise.

They became aware of a steady pounding noise beyond the walls.

From the plain below there came a roar, even above the steady noise of battle.