After a time, he heard a soft thud behind him.

The soft thud as she fell unconscious to the floor wouldn't have been heard more than a few feet away.

From the end of the bar there comes a soft thud.

As they did Blade heard something hit the ground behind him with a soft thud.

It hit the big man on the back of the head with a soft thud.

There was a sigh and a soft thud behind him.

The skull fell to the ground with a soft thud.

There came a soft thud as his small body hit the floor beside the bed.

It was a soft thud coming from the back of the house.

Several soft thuds hit the side of the house and the roof.