Internet radio (also known as web radio, net radio, streaming radio and e-radio) is an audio service transmitted via the Internet. Music streaming on the Internet is usually referred to as webcasting since it is not transmitted broadly through wireless means.
Internet radio involves streaming media, presenting listeners with a continuous stream of audio that cannot be paused or replayed, much like traditional broadcast media; in this respect, it is distinct from on-demand file serving. Internet radio is also distinct frompodcasting, which involves downloading rather than streaming. Many Internet radio services are associated with a corresponding traditional (terrestrial) radio station or radio network. Internet-only radio stations are independent of such associations.
A webcast is a media file distributed over the Internet using streaming media technology to distribute a single content source to many simultaneous listeners/viewers. A webcast may either be distributed live or on demand. Essentially, webcasting is “broadcasting” over the Internet.
The largest “webcasters” include existing radio and TV stations, who “simulcast” their output, as well as a multitude of Internet only “stations”. The term webcasting usually refers to non-interactive linear streams or events. Rights and licensing bodies offer specific “webcasting licenses” to those wishing to carry out Internet broadcasting using copyrighted material.
Webcasting is also used extensively in the commercial sector for investor relations presentations (such as Annual General Meetings), in E-learning (to transmit seminars), and for related communications activities. However, webcasting does not bear much, if any, relationship to web conferencing, which is designed for many-to-many interaction.
A podcast (or non-streamed webcast) is a series of digital media files (either audio orvideo) that are released episodically and often downloaded through web syndication. The word usurped webcast in common vernacular, due to rising popularity of the iPod and the innovation of web feeds.
The mode of delivery differentiates podcasting from other means of accessing media files over the Internet, such as direct download, 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 clientapplication 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.
Social media are media for social interaction, using highly accessible and scalablepublishing techniques. Social media use web-based technologies to transform and broadcast media monologues into social media dialogues. Andreas Kaplan and Michael Haenlein define social media as “a group of Internet-based applications that build on the ideological and technological foundations of Web 2.0, and that allow the creation and exchange of user-generated content.”[1] Businesses also refer to social media as consumer-generated media (CGM). Social media utilization is believed to be a driving force in defining the current time period as the Attention Age. A common thread running through all definitions of social media is a blending of technology and social interaction for the co-creation of value.
