Quite satisfied with that situation, The Shadow listened for outside sounds.

There was a slight outside sound as The Shadow reached the door.

Only two features are unusual: The video cameras over each bed and the absence of any windows or outside sound.

For one thing, an outside sound usually reaches the two ears at slightly different times and intensity levels, allowing the brain to determine the source.

Even before Curt had hung up the receiver his ears caught an outside sound.

He had detected an outside sound that the man had not heard.

But the outside sounds seemed to filter in from another world.

The outside sounds of children at play were distant, dreamy.

In space, every sound inside a ship has its significance, and there are no outside sounds at all.

The noise of the presses had drowned any outside sounds.