Concept in Definition ABC

A broadcast is the distribution of audio and / or video signals to a specific audience.

For the communication and the disciplines that study radio broadcasting, broadcast is the most frequent act of transmitting waves and / or audio signals and video in various formats to an audience that can be local, regional, national, international and with different characteristics.

Broadcasting systems are many and varied. For example, there are broadcasting systems with national capacity that allow the transmission of verbal messages in schools, hospitals and other institutions public. Other very common systems are of lower power and broadcast from radio and TV stations to more or less small areas. The latter are the most frequently mentioned when referring to radio and TV programs, which can be through broadcasting towers, broadcasting systems, satelite and by cable. Radio and TV media systems can cover areas as small as a block or hectare or as wide as entire continents. In turn, the message reaches the different audiences through

air (with antenna and receiver), cable (as with cable TV), or Internet.

From the popularization of digital media and, more specifically, the Internet, a new form of broadcasting emerged. Broadcasting over the Web is often much easier, cheaper and more effective than using the old traditional means of broadcasting. In addition, computer networks allow much greater reach and global coverage. In Internet broadcasting there is multicasting (when the information reaches multiple points), unicast (when it reaches only one) and anycast (when it reaches the closest node).
In turn, the emergence of this new modality stimulated the appearance of new concepts, such as that of podcasting. Podcasting is the production of audio and / or video files for dissemination through online subscription systems. The Username want to listen to it receives a warning, downloads it and can transfer it to any device of reproduction multimedia to access it at any time.

Broadcast Topics