Invented in 2004, Podcasting is a way of publishing sound files to the Internet so you can then subscribe to a feed and receive new audio files automatically.

Podcasting is a term that derives its name from Apple's market-leading digital audio player, the iPod, and broadcasting. However, it is worth noting that Podcasting was not invented by Apple, nor do Podcasts require a portable player (especially an iPod) or Apple software.

Indeed, Podcasting is making audio files (most commonly in MP3 format) available online in a way that allows software to automatically download the files for listening at a later date. The name Podcasts is no longer specifically related to the iPod but to any software and hardware combination that permits the downloading of the files.

Podcasting is distinct from other types of online audio delivery because of its subscription model, which uses the RSS 2.0 (Really Simple Syndication) file format. Podcasting enables independent producers to create self-published, syndicated 'radio shows', and gives broadcast radio programs a new distribution method. Listeners may then subscribe to feeds using 'Podcatching' software (a type of aggregator), which periodically checks for and downloads new content automatically.

All you need to get started is Podcasting software (also called 'aggregator' software), which periodically checks for and downloads new content. Once you've downloaded and installed the software, simply add a Podcast feed from any content provider that supports them - much like RSS feeds. The Podcasting software will then automatically check for updates and download the files to your computer so you can load them onto your digital audio player.

Unlike radio or streaming media, Podcasts are time-shifted, meaning that you have control over when you hear the recording. This has disadvantages, since Podcasts cannot have live participation or reach large audiences as quickly as radio can.

However, Podcasting has significant advantages over traditional methods of broadcasting due to the egalitarian nature of the technique. In most countries, the radio spectrum is heavily regulated, and personal broadcast licenses are difficult or impossible to obtain. Podcasting allows individuals to easily transmit content worldwide without these difficulties.

Podcasting differs from broadcasting and Webcasting in the way that content is transmitted. Instead of a central audio stream, listeners download audio files remotely and automatically. Podcasts can also include metadata such as dates, titles, and descriptions.

Podcasting also differs from autocasting in terms of content - Podcasts are generally voice broadcasts while autocasting is a speech-synthesised version of regular text blogs. Audioblogs can be easily made into Podcasts if they add support for RSS to facilitate automatic retrieval.

Podcasting is generally inexpensive to implement. Investment in a good quality microphone will ensure that the recording is audible. Depending on knowledge and experience, some Podcasters invest in audio conversion, compression and audio editing software applications. Also, Web space bandwith and software to create the feed for the Podcast is needed. All in all, the initial expense is relatively small.

Where will Podcasting go next? We believe that the technology has a far way to go before the Internet sees the full potential of Podcasting. One thing is for sure - audiophiles will benefit!

BIOS, Jul 13, 05 | Print | Send | Comments (0) | Posted In Audio