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上海师范大学 2010 年教育技术学专业研究生复试题
考试科目二：外语
The New OxfordAmerican Dictionary defines podcast as “a digital recording of a radio
broadcast or similar program, made available on the Internet for downloading to a
personal audio player.” In other words, it’s a digital audio file that’s created,
shared, and heard.
Although many podcasts contain only music or only speaking, most are a creative mix of
voice, music, and sounds. Some now include video or photos. There is a wide variety of
content, such as National Public Radio programming, a university lecture, an
international news update, a band’s newest music, or an individual’s enthusiastic view
of a political issue. Podcasts range in length from a few minutes to several hours.
What’s so revolutionary about a pod-cast? MP3 files have been around for a while and
were accessed easily from the Web. But the arrival of podcasting and its Really Simple
Syndication (RSS) feed means that you no longer have to go to the Web to get newly posted
MP3 files or to download them to an MP3 player. Instead, youcan subscribe to a podcast
series. Anytime you log onto the Internet, the software reaches out and automatically
downloads newly posted podcasts towhich you’ve subscribed. The new files wait on your
computer or MP3 player until you’re ready to listen.
In September 2004, when podcasting was in its infancy and a Google search of “podcast”
brought up only 24 results, Doc Searls of IT Garage said, “Podcasting will shift much of
our time away from an old medium where we wait for what we might want to hear to a new
medium where we choosewhat we want to hear, when wewant to hear it, and how we want to
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