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Emerging Technology: Podcasting
CATS 2005 Presentation
Steve [email protected]://sloantech.blogspot.com/
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Podcasting a topic of great interest
See:
•www.mercurynews.com
•Itconversations.com
•Dangillmor.typepad.comThis is a podcast!
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Agenda What is podcasting? Emerging Technology (ET)
Define and understand ET Where podcasting fits into ET
Define and understand podcasting Podcasting nuts and bolts
How to create a podcast Podcasting tools
Summary Benefits of podcasting Downside of podcasting
Conclusion, credits and conversation
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Emerging Technologies of the pastPortable phones once niche players in
telecommunications
Hard to use
Cumbersome
Expensive
Now considered one of the three things everybody has
Wallet/purse
Keys
Portable phone
Continuing to change face of society, this tech is still emerging
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What is Emerging Technology?
What are some emerging
technologies?
The adjective emerging has 3 meanings Coming into view
Coming into existence
Coming to maturity
Internet + Weblogging The read-write web
Dan Gillmor, “We the media”
User enabling software-hardware Common computers over 1 billion instructions a second (Super
Computers, “Lethal Weapons”)
Media creation applications such as iMovie, iPhoto etc.
Portable devices OQO, Sony devices, Nokia and “Scoble” phones
Always-on broadband in the home Cable-DSL
Ubiquitous connectivity, “digital dial tone” 802.11, Cellular, RSS, (wireless plus download)
See:
•www.answers.com
•www.bushin30seconds.org
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Emerging Technology Is:
Useable, portable & powerful systems
capable of accessing and creating
dynamic content in the hands of the
public.
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Podcasting and Emerging
Technology
Podcasting is a subset of RSS which is a subset of Emerging Technology
Podcasting uses RSS v. 2.0 Enclosures
Also includes videocasting
XML based
Download based
Not dependent on high bandwidth
Dependant on relatively pervasive connectivity
Technically it is pull technology Push / pull convergence
Subscription required
Has push characteristics
“Long tail” technology
Infinite number of channels!
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Podcasting is Mixing of the words iPod and broadcasting
A web-based broadcast medium
Audio files (most commonly in MP3 format) Made available online
Software (like iPodder & xPodder) Automatically detects new files
Based on RSS v 2.0 enclosures
Downloads the files For listening at the user's convenience
Allows time shiftingSee:
•www.wikipedia.org
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Understanding Podcasting
A podcast is like an audio magazine subscription Subscribe to a feed
Subscriber receives regular audio programs delivered via the Internet
Can listen to them at their leisure
Differ from traditional internet audio in two important ways They can be listened to at any time because a copy is on the
listener's computer or portable music player (hence the "pod" in "podcasting")
Are automatically delivered to subscribers, so no active downloading is required
Podcasting is functionally similar to the use of timeshift-capable digital video recorders (DVRs) such as TiVo which lets users record and store television
programs for later viewing
Push / Pull convergence
See:
•www.wikipedia.org
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Podcasting is not just for iPods
See:
•www.edupodder.com
•www.itconversations.com
•www.engadget.com
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XML code of a podcast
See:
•www.edupodder.com
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Some uses for podcasting in
education
For distance learning
To facilitate self-paced learning
For remediation of slower learners
To allow faculty to offer advanced and or highly motivated learners extra content
For helping students with reading and/or other learning disabilities
For multi-lingual education
To provide the ability for educators to feature guest speakers from remote locations
To allow guest speakers the ability to present once to many sections and classes
To allow educators to escape the tedium of lecturing
To offer a richer learning environment
See:
•www.edupodder.com
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How to do a podcast?
Production can be simple or complex, depending on platform and how polished you want the end product to be Len Pryor has shown several cookbook methods at
Engadget
New WYSIWYG web-based tools promise to streamline podcast production
See:
•www.engadget.com
•www.odeo.com
•www.audioblog.com
•www.edupodder.com
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One easy way to create a podcast
QuickTime™ and a3ivx D4 4.5.1 decompressor
are needed to see this picture.
See:
•www.audioblog.com
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Audioblog
See:
•www.audioblog.com
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This is Odeo
See:
•www.odeo.com
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Odeo offers some attractive features
Access Control Lists (ACLs) on the roadmap
Can control who can get access to content
Easy to use user interface
Evan Williams, former co-founder of Pyra Labs
Pyra created “Blogger”
Blogger is now owned by Google
See:
•odeo.com
•Flickr.com
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Audioblogger
See:
•www.audioblogger.com
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Feeder
See:
•www.reinventedsoftware.com
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Podcasting kit
See:
•www.pwop.com
Less than $400!
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One podcasting kit High-quality gear that is also compact and affordable
You don't need a computer in order to record your voice
The mic plugs into the preamp. The preamp plugs into the recording device's line input, and the headphones plug into the recording device's headphone jack
Only the preamp requires AC power
Recording device uses a single AA battery which lasts a long time
See:
•www.pwop.com
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Lifeblog
See:
•mobile.kaywa.com
•www.nokia.com
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Transparency By nature RSS is transparent This can be good or bad
Invites the world into the classroom
Some solutions for this
Use application layer security (SSL/SSH)
Tools like Odeo to feature ACLs
Secure RSS?
Do we adapt to provide more transparency, or do we adapt the tool to provide greater security? Route around nature of Internet may make it difficult to
not be transparent
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See:
•www.infoage.idg.com.au
secureRSS? Does secure RSS exist?
Will secure RSS exist?
If so may enable easy one-to-one podcasting
Digital Rights Management (DRM) an alternative?
Also, application layer security (SSH/SSL)
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“When it comes to podcasting, we are
all newbies”~Doug Kaye
Tools are making podcasting easier and easier
Podcasting can be done from and to everything from desktop computers to cell phones
The key to podcasting is RSS Download verses streaming
Low bandwidth tolerant
Podcasts are XML files Platform and device agnostic
Dependent on capabilities of receiving device
A non-proprietary solution
Extends reach of Internet Files are local
Works with cell phones
See:
•Itconversations.com
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Downsides of podcasting(and RSS)
Depends on a relatively pervasive connection to the Internet at some point Can be via telco
By nature it is transparent
Major changes in faculty/student relationship Value of human interaction cannot be ignored
What about the student peer relationship?
May prove to be a barrier to faculty and/or students who are tech challenged
Lack of searchability
Potential for information overload
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Credits Special thanks to
Robert Scoble
The Gillmor brothers
Dan
Steve
Doug Kaye
Lenn Pryor
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Contact info and conversation
SJSU [email protected]
(408) 924-2374
General Skype/AIM: ssloansjca
Web: www.edupodder.comMain Geek Blog: sloantech.blogspot.com
(408) 605-0692
Conversation What do you think of podcasting?
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www.sjsu.edu/cats/2003/showcase/
