The room became so silent, he could hear the soft, regular sound of her breathing mixed with his own.

It had started raining again, but the regular sound of the drops hitting the roof hardly bothered me at all.

Yes, there was a noise - a few quick, regular sounds, far away and hollow-sounding.

She finally began to register a flat, regular clapping sound.

He wiped the dream from his face and listened to the distant sounds: too regular for thunder.

She was so caught up in her work that at first she did not notice a flat, regular clapping sound.

What he listened to was the regular sound of Natalia's breathing.

A regular creaking sound seemed to be coming from overhead.

Hurrying her steps, she heard the soft regular sound of snoring.

There was, instead, a regular rasping sound that had a slobber in it.