He started looking up companies in the phone book and putting on a deep voice.
At the same time, a deep voice came from behind her.
It could have been a woman with a deep voice.
A moment later a deep voice was on the other end of the line.
A deep male voice asked a question I didn't catch.
You're thinking about her as if she's real, the deep voice said.
"You will have to get one of your own some day," I heard him say in his deep voice.
His deep voice made it a statement rather than a question.
She appears to be their leader, and has a deep voice.
A deep and very clear voice came from the other end.