Her voice sounded rusty and strained in her own ears.

His voice sounded old and rusty to his own ears.

He should have realized it when he'd tickled her and her stream of laughter had sounded so rusty.

It sounded strange and rusty, and a bit frightening.

To Emily, her own voice sounded harsh and rusty.

Her voice sounded old and rusty 'How you feeling, dear?'

His own voice sounded rusty and odd to him.

Even to himself his voice sounded rusty and old, and he was grateful no one asked any questions.

John Rowlands seemed to speak with difficulty; his voice sounded slow and rusty.

His voice sounded harsh and rusty, as though he had not used it for a long time.