Our Friend Hedgehog : The Story of Us Our Friend Hedgehog Series ; Book 1 by Lauren Castillo Copyright Year: 2020 ISBN-13: 9781524766719 Video Preview Available format(s): VOICEText (H) Add to Bookshelf What's an Audio Format Audio format refers to the way an audiobook is recorded. Not all audiobooks have the same formats. Classic Audio: A human reading an audiobook without the text displayed. VOICEtext (H): Human narrator with text that you can follow along with as it reads. VOICEtext (S): Synthetic voice with text you can follow along with as it reads.