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A text-book of physics: Sound (Fourth Edition) - download pdf or read online

By J. H Poynting and J. J. Thomson

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From a quality point of view, such technologies mean that the consumer device – such as the CD player or digitally enabled television or radio – can perform the translation from digital to analogue audio stream, extending the digital domain all the way into the home. 4 How does digital technology work? To explain how digital technology works, it is appropriate to look at the example of a popular general-purpose computing device such as a personal computer (PC). The PC is an example of a microcomputer, so called because most other types of computers are bigger, if not physically, at least in terms of power and cost.

Most studios using digital audio are forced to use a combination of open-standard and proprietary techniques in order to transfer data from its source to the recording media, since one vendor may not have products that fit all the steps in the audio production chain. In such cases, interconnections, media filters, and translation devices of various types ensure translation and 43 Network Technology for Digital Audio synchronization between the various devices in use. This method of transfer is difficult to manage and can be extremely complex, especially over long distances when all the component elements are considered.

The receiving device can interpret the digital information, and not the distortion common in analogue signals caused by reflections or weather conditions. Another advantage in using digital signals is the ability to multiplex or combine signals together. This means that several completely separate signals can be sent over the same communication channel (such as cable or a particular radio frequency). This can occur by some means of addressing or recognition of the components of each stream within the broadcast.

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