Preparing for the Chemistry AP exam with Chemistry : the central science [by Theodore L.] Brown [Eugene] LeMay [Jr.] [Bruce E.] Bursten.

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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.