His voice quieted when he said that last sentence.

Their voices quieted to absolute silence, so much so that she was able to speak without a microphone.

His voice quieted, "I'm sorry but we'll have to post a guard outside the barn.

The voices quieted, but they didn't quite die down.

A man's voice, firm and deep and kind, quieted her first wild feeling of terror.

The contenders rounded the faraway corner and their voices quieted, leaving him in near silence.

She paused, looking down at the floor, and when she spoke again, her voice had quieted.

A strange voice whispering in his ear quieted him.

The governor's voice had quieted, but it was still laced with bitterness.

When their voices quieted, she said to Marcus, "Are you lost, sir?