The Nine Modes of Delivery Text copy of the Lesson on Aquatic Systems MSWord PDF 2. Audio: 44 KHZ, 32 Bit, Sterio, CD Quality3. Streaming Audio: 11 KHZ, 16 Bit, Mono, Telephone Quality 4. Text to Audio: Text To Audio 5. Streaming Video: Conventional Classroom 6. Streaming Video: Enriched Classroom 7. VCD For Players:Available with OUSL 8. DVD For Players:Available with OUSL 9. Visually impaired Partial:Magnifier/Total: Audio Use +/- Key for Enlarging the Characters (for Magnification)