I wanted to be the female voice of the group.

A female voice coming from a place he couldn't imagine.

It was a female voice, but not one I'd heard before.

Before he could say anything, the female voice on the other end spoke.

A soft female voice came on at the other end.

Another female voice answered from what seemed to be the room in general.

He couldn't tell what it was, but a female voice seemed to be singing to him.

"Would it make a difference if I spoke in a female voice?"

This is not the only source of difference between male and female voice.

Eric and the others were nearly to the top when a female voice called out off to the right.