Her voice sounded harsh and unfamiliar to her; she had to make a great effort to speak at all.

Even the harsh voice which she had learned to loathe and to dread sounded curiously subdued and unfamiliar.

If it sounds unfamiliar and confusing, that is because it is.

Her voice sounded unfamiliar and thick, almost as though it was choked with tears.

They sound very familiar and very unfamiliar at around about the same ringing time.

He played mostly standard repertory and made it sound fresh and unfamiliar.

Both pronunciations are correct, but each will sound strange and unfamiliar to a speaker of the opposite dialect.

The mother's voice, though gentle, apparently sounded strange and unfamiliar to the child, because it frightened him.

Belinda's own voice sounded odd and unfamiliar to her; she couldn't remember when she last spoke.

It sounded so unfamiliar that he tried to look up, thinking that someone else might be in the room.