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By Tony Feldman

During this transparent and hugely available booklet, Tony Feldman presents an account of the evolution and alertness of electronic media. Clarifying its underlying applied sciences, he identifies its enormous advertisement and human capability. utilizing as a kick off point a simplification which considers new media in unique sectors; packaged "off-line" media equivalent to CD-ROMs; and the area of transmitted media along with electronic broadcasting and interactive on-line companies, Feldman presents a accomplished assessment of the electronic media panorama. targeting multimedia and the leisure media he describes and analyses the extraordinary upward push of CD-based details and the both progressive improvement of the net and on-line prone. Set inside of a advertisement context, readers can determine the aptitude to generate profit and cash in on the hot media. An creation to electronic Media concludes with a strategic evaluation of the results of going electronic for people, businesses and companies.

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Indeed, the degree of sacrifice may not be great. After all, if 25 frames per second represents what is technically described as full motion, would the eye of the consumer really notice a drop to 20? In practice—depending on the video footage involved—digital producers can go as low as 15 frames per second and still retain much of the quality of full motion, even if the video gets a little jerky when the action hots up. If you want to take risks, you can also cut the data still further by reducing the amount of colour data in the images and making do with a grainy greyness instead of sharp, contrasty video quality.

Software suitably designed for the particular application is employed to control the user’s interaction with the multimedia data on the disc. This means that the choices a user makes determine the particular pathway that the user takes through the multimedia information, with the computer drawing as required on the text, sound, still images and moving video stored on the disc. Used this way, the video disc is no more than a peripheral to the computer, much as any external disk drive might be. It is simply a physical source of stored, AN INTRODUCTION TO DIGITAL MEDIA 37 displayable information, accessed by a computer as a part of an interactive product designed for a given purpose.

First, a standard disc offers up to 55,000 frames of information, each with its own unique electronic address or frame number. This makes it possible to access any individual frame by calling up that address and displaying its contents. Second, because the disc offers radial access to its contents, an individual frame or sequence of frames can be located and retrieved very quickly. The combination of these two factors means that by placing access to the disc under computer control, it is possible to create an interactive multimedia experience.

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