ELCL 605

Audio, Visual, and Video Based Technologies

Week 4

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Visual Technologies

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Visual literacy is

The ability to understand and evaluate images, symbols, or icons,

and use them effectively in order to express ideas.

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What does this sign mean?

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Two Visual Designs : Good vs. Bad design?

1 2

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Guidelines for effective visual design

• Relevance

• Coherence

• Consistency

• Proportion

• Contrast• Unity and

Direction

Well-designed visuals (displays that can be easily read and interpreted) can overcome communication barriers, such as those involving sensory, cultural, and learning style problems.

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Projected Visuals in Teaching and Learning

• The overhead projector has become a powerful educational technology tool in many classrooms, in order to project non-projected visuals.

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Document Cameras:

• Video camera mounted on a stand that captures and displays video images.

Non- Traditional Visual Media

Projected Visuals in Teaching and Learning

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Creating Visual Messages, with Digital Cameras

Can you think of any educational activities that your students could do with digital cameras?

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Creating Visual Messages

• Creating stories with pictures (language arts)

• Taking pictures (social studies, science)

• Documenting learning process

• Publishing newsletters and flyers

• Developing presentations.

• Etc..

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Photo Editing Software

• Adobe Photoshop

• There are many other types of software as well.e.g.) Microsoft Paint : this is a free built-in picture editing software found on all PCs. You can access this program by going to: “Start > All programs > Accessories > Paint”

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Digital Image Format (Extension)

• BMP or TIFF• JPG (Joint Photographic Experts Group)• GIF (Graphics Interchange Format)• PSD (Default Photoshop file format)• PNG (Portable Network Graphic)

compressed file format for the web- relatively new.

Reference)http://dx.sheridan.com/advisor/file_formats.html

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Downloading Web graphics

- Free digital photos: http://www.freedigitalphotos.net/

- Free Images: http://www.freeimages.co.uk/

- Aarin FreePhoto: http://aarinfreephoto.com/

- Free Pictures: http://www.freefoto.com/index.jsp

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Audio Technologies

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Traditional Audio Media

Audio Cassette– Economic, durable, and easy-to-use– Uses magnetic tape to record voice, music,

and other sounds– Can be used in small groups or large group

instruction May be used for many projects• Talking books, multimedia kits, oral

histories and journals are examples

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Traditional Audio Media

Broadcast Audio• Received via radio or cable audio

channels• Enhances content with current events,

music, and foreign languages

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Digital Audio Media

1. Optical Media: e.g.) Compact Disc (CD).

2. Internet Audio: format .wav, .mp3.

3. Internet Radio

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Digital Audio Media

Internet Audio

• Instead of CDs, you can download legally available audio in WAV and MP3 compressed formats.

• MP3 is gaining popularity because its files are smaller.

E.g.) Podcasting: - http://www.epnweb.org/- http://www.centerforcsri.org/podcasts/pod7/additional.html

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Digital Audio Media

Internet Radio

• Using streaming media, radio stations offer broadcasts “simultaneously” via the Web as well as the airwaves.

• Includes music, news and talk stations from around the world.

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Video Technologies

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Motion Video

• Whether traditional or digital, can bring content to life.

• Brings distant, imaginary, or simulated places into the classroom.

• Brings history to life.

Video in Teaching and Learning

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Traditional Video Technologies

1. Broadcast Video

2. Narrowcast Video

3. Cablecast Video

4. Recorded Video

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1. Broadcast Video

• Television images delivered via terrestrial or satellite equipment.

• PBS offers educational programming.

Traditional Video Technologies

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2. Narrowcast Video

• Video signals targeted to a specific audience.

• Distributed from broadcast locations to schools.

• Can target very specific district instructional needs: e.g.) Bergen County Technical School

Traditional Video Technologies

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3. Cablecast Video

• Cable TV companies typically offer a channel for schools or public use.

• Quality cable television shows (CNN, Discovery, Learning Channel) can be easily incorporated into classroom instruction.

Traditional Video Technologies

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4. Recorded Video

• This asynchronous format is the format of choice for schools.

• Video Cassette Recorders (VCRs) playback video recorded on VHS tape

Traditional Video Technologies

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Digital Video Basics

• Digital video images allow for limitless editing and can be added to many digital files (Presentations, web sites, etc.)

• AVI, MPEG, and MOV are the most popular compression formats today.

• Microsoft PowerPoint - Supported Video Formats: http://kb.wisc.edu/helpdesk/page.php?id=3818

Digital Video Technologies

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Digital Versatile Discs (DVDs)

• DVDs can store up to 10.5 gigabytes of digital video on each side.

• DVD-Rs, which allow recording.

Digital Video Technologies

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Digital Video Technologies

Video Editing Software

• iMovie for Mac • FinalCut Pro for Mac • Adobe Premiere: Both for PC and Mac.• Movie Maker (free)

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Incorporating Videos

• NASA Online:http://www.knowitall.org/nasa/simulations/index.html

• Learner.org: http://www.learner.org

• YouTube or TeacherTube: - http://www.youtube.com– http://www.teachertube.com

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Internet Video – Live Cams

• Live cameras connected to computers and logged into the Internet show live digital video. e.g.) - http://www.mbayaq.org/efc/cam_menu.asp

- http://www.earthcam.com/usa/newyork/timessquare/

http://www.fourmilab.ch/earthview/vplanet.html?CFID=850056&CFTOKEN=94309872

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Digital Video Technologies

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Audacity

• Audacity:http://audacity.sourceforge.net/download/

• LAME MP3 encoder:http://audacity.sourceforge.net/help/faq?s=install&item=lame-mp3

• DivShare: http://www.divshare.com/

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• “C:\Program Files” (without the quotes) in the File name

Navigate to “Audacity,” “Plug-Ins” folder, Select “lame_enc.dll”