Characteristics of age and sex

детский голос a child's voice; a childish voice
мальчишеский голос a boyish voice
юношеский голос an adolescent's voice; a youthful voice
девичий голос a girl's voice; a girlish voice
женский голос a womanly voice; a woman's voice; a female voice
мужской голос a masculine voice; a man's voice; a male voice
молодой голос a youthful voice
старческий голос an old person's voice