Bretz, Rudy. (1971). The Communication Media. Englewood Cliffs, NJ; Educational Technology Publications
28 media and 5 characteristics.
| Telecommunications Medium | Sound | Picture | Line Graphics | Motion | Recording Medium | |
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Class I: Audio-Motion-Visual Media
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| x | x | x | x | x | Sound Film | |
| Television | x | x | x | x | x | Video Tape |
| Film TV Recording | ||||||
| x | x | x | x | x | Holographic Recording | |
| Picturephone | x | x | x | x | x | |
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Class II: Audio-Still-Visual Media
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| Slow-scan TV | X | X | X | X | Recorded Still TV | |
| Time-shared TV | ||||||
| X | X | X | X | Sound Filmstrip | ||
| X | X | X | X | Sound Slide-set | ||
| X | X | X | X | Sound-on-slide | ||
| X | X | X | X | Talking book | ||
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Class III: Audio-Semimotion Media
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| Telewriting | X | X | X | x | Recorded Telewriting | |
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Class IV: Motion-Visual Media
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| X | X | X | X | Silent film | ||
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Class V: Still-Visual Media
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| Facsimile | X | X | X | Printed page | ||
| X | X | X | Filmstrip | |||
| X | X | X | Picture Set | |||
| X | X | X | Microform | |||
| X | X | X | Video file | |||
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Class VI: Audio Media
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| Telephone | X | Audio Disc | ||||
| Radio | Audio Tape | |||||
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Class IV: Print Media
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| Teletype | X | Punch Paper Tape | ||||