Editing Mass media (section)

=== Broadcast media ===
{{Main|Radio broadcasting|Television}}
[[File:Crystal radio advertisement.png|thumb|A family listening to a [[crystal radio]] in the 1920s]]
The sequencing of content in a broadcast is called a [[scheduling (broadcasting)|schedule]]. With all technological endeavours a number of technical terms and slang have developed.<ref>See [[glossary of broadcasting terms]].</ref>

[[Radio]] and [[television]] programs are distributed over frequency bands which are highly regulated in the United States. Such regulation includes determination of the width of the bands, range, licensing, types of receivers and transmitters used, and acceptable content.

[[Cable television]] programs are often broadcast simultaneously with radio and television programs, but have a more limited audience. By coding signals and requiring a [[cable converter box]] at individual recipients' locations, cable also enables [[subscription]]-based channels and [[pay-per-view]] services.

A broadcasting [[organisation]] may broadcast several programs simultaneously, through several channels ([[frequencies]]), for example [[BBC One]] and [[BBC Two|Two]]. On the other hand, two or more organisations may share a channel and each use it during a fixed part of the day, such as the [[Cartoon Network]]/[[Adult Swim]]. [[Digital radio]] and [[digital television]] may also transmit [[multiplexing|multiplexed]] programming, with several channels [[data compression|compressed]] into one [[DAB ensemble|ensemble]].

When broadcasting is done via the Internet the term [[webcast]]ing is often used. In 2004, a new phenomenon occurred when a number of technologies combined to produce [[podcast]]ing. Podcasting is an asynchronous broadcast/narrowcast medium. [[Adam Curry]] and his associates, the ''[[Podshow]]'', are principal proponents of podcasting.