Podcasting and online radio
Podcasting and online radio,
Podcasting is a form of distributing audio files over the Internet, allowing users to access them by subscribing and downloading them.
There are now many affordable portable devices called MP3 devices, for both recording and listening to podcasts. This, along with increased access to the internet, makes podcasting a useful tool for people to share information.
A podcast (or non-streamed webcast) is a series of digital media files (either audio or video) that are released episodically and often downloaded through web syndication. The word replaced webcast in common use with the success of the iPod and its role in the rising popularity and innovation of web feeds.
The mode of delivery differentiates podcasting from other means of accessing media files over the Internet, such as direct download link, or streamed webcasting. A list of all the audio or video files currently associated with a given series is maintained centrally on the distributor's server as a web feed, and the listener or viewer employs special client application software known as a podcatcher that can access this web feed, check it for updates, and download any new files in the series. This process can be automated so that new files are downloaded automatically. Files are stored locally on the user's computer or other device ready for offline use, giving simple and convenient access to episodic content.[1][2] Commonly used audio file formats are Ogg Vorbis and MP3.
As discussed by Richard Berry, podcasting is both a converged medium bringing together audio, the web and portable media player, and a disruptive technology that has caused some in the radio business to reconsider some established practices and preconceptions about audiences, consumption, production and distribution.[3] This idea of disruptiveness is largely because no one person owns the technology; it is free to listen and create content, which departs from the traditional model of 'gate-kept' media and production tools.[4] It is very much a horizontal media form: producers are consumers and consumers become producers and engage in conversations with each other.[5]