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By Tony Feldman

During this transparent and hugely obtainable ebook, Tony Feldman presents an account of the evolution and alertness of electronic media. Clarifying its underlying applied sciences, he identifies its huge advertisement and human power. utilizing as a place to begin a simplification which considers new media in targeted sectors; packaged "off-line" media resembling CD-ROMs; and the realm of transmitted media such as electronic broadcasting and interactive on-line companies, Feldman presents a complete review of the electronic media panorama. targeting multimedia and the leisure media he describes and analyses the unbelievable upward thrust of CD-based details and the both progressive improvement of the net and on-line prone. Set inside a advertisement context, readers can determine the aptitude to generate profit and take advantage of the recent media. An creation to electronic Media concludes with a strategic evaluate of the results of going electronic for people, businesses and companies.

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One clear reason, directly relevant to our pursuit of an identity for multimedia, concerns the way in which the different media were being presented. Although excellent in themselves, each of the elements of the multimedia kit was delivered independently. This fragmentation was, of course, unavoidable. In the mid–1970s, the technology needed to bind the individual media together simply did not exist. There was no way of combining the information in the workbooks, the sounds of the audio tape or the images of the slides and film strips.

Even if desktop computing had not yet been invented, the term ‘multimedia’ was already in use. In the world of educational publishing, in particular, multimedia meant kits, typically a combination of pupils ‘booklets, teachers’ guides, film strips, audio tapes, and photographic slides. Such products, attractively boxed and delivered to the classrooms of the early 1970s, certainly offered multiple media—text, images and sound—but each was delivered as an independent element in the package. The different media were fragmented, difficult to integrate.

The benefits of data compression have always been obvious. If a message can be compressed one hundred times, it can be transmitted in one-hundredth of the time, or transmitted at the same speed through a channel with one-hundredth of the bandwidth, and it can be stored in one-hundredth of the volume of the original. Of course, the message will make sense only if it can be successfully decompressed when it reaches the user. Although this analysis is not strictly accurate—there is always a compression/decompression overhead of about 5 per cent—the benefits and potential cost savings are substantial and compression techniques have been a major field of development from the time of the very earliest digital databases.

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