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Images and Sound

Images and Sound What is the Old Saying? thousand words A picture is worth a ________________? If you create web sites, make PowerPoint presentations, publish newsletters, etc. it is critical that you use high quality images to illustrate what you are communicating!

daniel_millan
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Images and Sound

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  1. Images and Sound

  2. What is the Old Saying? thousand words • A picture is worth a ________________? • If you create web sites, make PowerPoint presentations, publish newsletters, etc. it is critical that you use high quality images to illustrate what you are communicating!

  3. Four Primary Methods for Obtaining Images

  4. Digital Cameras • Makes your project “personalized” and “localized” • Can take photos that you might not be able to find any other place • Can have “breaking news” displayed in a manner of minutes. • Can “fix” bad photos with software

  5. Scanners • Useful for capturing historical images, slides, existing photographs, etc. • Quality scanners are relatively inexpensive. • Some require no external power and plug into the USB port (great for library research) • With appropriate software, one can also capture printed text in an editable file.

  6. Clip Art on CDs • There are several commercial clip art collections on CDs. These are primarily illustrations and drawings, with some photographs. • Click Art • Art Explosion

  7. Clip Art on CDs • The file formats are not always compatible with the web. Thus they might be used more for PowerPoint and Word projects. • You can purchase a 500,000 image product for less than $50 at places like Best Buys, Office Depot, etc.

  8. A Word about File Formats • Not all graphic images can be used on the web. • JPG and GIF are the two files that absolutely work on the web. • JPG is typically a photograph • GIF is often a drawing but could be a photograph • GIF files are typically much smaller than JPG files because they are limited on the number of colors in an image they save • Other files such PNG and BMP might work but be cautious

  9. World Wide Web • There are numerous sources of images on the Web. • Typically one right clicks on a web image and chooses “save as” or “copy” depending upon what you are doing. • If you are inserting images into PowerPoint or Word, you can copy • If you want to use the graphic in a web page, you should save it to your computer.

  10. Google • You can search Google for images • http://images.google.com/ • Using Google is a quick and easy way to find an image quickly as long as you just need something to illustrate a point. If you want to find a perfect picture, you may need to check out the other sites.

  11. Google • If you are searching for a photograph you could “help” the search by including jpg to indicate you are looking for a photo. • Cow jpg • If searching for a clip art, include gif in the search • Cow gif

  12. USDA • The USDA has free high quality photos • http://www.usda.gov/oc/photo/opclibra.htm • A new section of 4-H photos has recently been added.

  13. Farm Photos • One can find farm photos at • http://www.farmphoto.com/homestead/forum.asp • This site has a variety of agricultural images grouped by categories • Quality varies greatly

  14. Free General Photos • www.freefoto.com • A variety of pretty good images

  15. Professional Stock Photos • www.comstock.com • I love this site. The photographs are absolutely great. • Register for free and you can download larger image sizes. • This site allows one to search for concepts such as surprise, suspense, ideas.

  16. A Comstock Photo “Smart”

  17. Professional Stock Photos • http://www.freestockphotos.com/ • This site has links to numerous other free photograph sites.

  18. Library of Congress • The Library of Congress American Memory project has great historical photos. • http://memory.loc.gov/ammem/index.html

  19. Photo from American Memory

  20. NCSU • The NCSU Department of Communication Services has just put their photo library on the web. • They have campus photos, extension photos, and photos grouped by college • However many of the images are bmp files which may not work on the web. • http://images.cals.ncsu.edu/gallery2/main.php

  21. A NCSU Image

  22. Two Categories of Images • There are two basic types of images • Raster (composed of little dots - pixels) • As you enlarge a raster image, it tends to get fuzzy, grainy, pixelated. • So if you need an image of a particular subject try to fine one near the actual size you need in order not to have to enlarge it • Images that are bitmaps have file extensions of .jpg, .bmp, .gif, .png, .tiff

  23. Two Categories of Images • Vector • Vector graphics use mathematical relationships between points and the paths connecting them to describe an image. Vector graphics are composed of paths. • They can be enlarged with no loss of clarity. • Vector images end in .wmf, .eps, .svg • Vector graphics are commonly found on clip art CDs.

  24. Comparison of Vector and Raster Top image shows vector at 7x magnification, bottom is raster at 7x magnification

  25. Sound

  26. Sound Trivia • What was the name of the first “talkie” (A movie with sound) • The Jazz Singer • In what year was this movie released? • 1927 • Who did it star? • Al Jolson • What were the implications? • End of an era

  27. Why use Sound? • Gains and retains attention • Sets the mood (helps manage student behavior) • Contributes to learning • Can add humor which is related to enthusiasm which is related to effective teaching. • Can be used for “stand alone” PowerPoint presentations • Fairs • Recruitment booths • Open houses Move the mouse over me

  28. Sound • Typically you put sound in a PowerPoint presentation. • However sound can be on a web site (I don’t recommend that) • Sound can be inserted into a word document. • dallas.docx • dallas.doc

  29. Is Chuck Amato still coaching at NCSU? Move your mouse over the images.

  30. Types of Sound Files • .WAV • Very Common audio file format • Developed by Microsoft and IBM • Large file size • PowerPoint loves .wav files • There are lots of places to download wav files on the Internet • Typically sound clips from movies and tv shows, but can be songs

  31. Types of Sound Files • .MID (pronounced middy) • Musical Instrument Digital Interface • Developed by the music industry • Small file size • Often found in greeting cards that play music • Often plays a rudimentary sound • You can insert a .mid file into PowerPoint using the insert, movies and sound menu but can’t insert it using custom animation or action settings. Click on me

  32. Types of Sound Files • .MP3 • A type of MPEG file (Moving Picture Experts Group) • Supported in PowerPoint 2000 on (not 97) • These files are typically songs • You can insert a mp3 file into PowerPoint using the insert, movie and sounds menu but can’t insert it using custom animation or action settings. Click on me

  33. Types of Sound Files • .ASF • Advanced Streaming Format • A new standard developed by Microsoft for streaming audio • It is unlikely that will use this type of sound file in PowerPoint

  34. Types of Sound Files • .AU • An older audio file format • .RA • Streaming file format developed by Real Audio • You will probably not use either in PowerPoint, but should be aware of the existence of these files. Click on me

  35. Sound Sources • http://www.externalharddrive.com/waves/waves.html • http://www.thefreesite.com/Free_Sounds/Free_WAVs/ • http://www.wavcentral.com/

  36. Using Sound in PowerPoint • Insert a Sound file onto a slide. • Insert • Movies and Sound • Sound from File • You will be asked if you want it to play automatically or play when you click on the sound icon.

  37. Using Sound in PowerPoint • Use Action Settings associated with an image Mouse Click Mouse Over Mouse Over Mouse Click

  38. Using Sound in PowerPoint • Use sound effects as part of custom animations

  39. Using Sound in PowerPoint • Playing a CD track (however the CD has to be in the CD player-you can see the icon below but will hear no sound because the CD is not in the computer) • You select which tracks to play in the Insert, Movies and Sounds, Play CD Audio Track

  40. Using Sound in PowerPoint • Recording a narration • Go to slide show and select record narration • This could be used by • a substitute teacher • A self presentation at the county fair, open house, pta meeting, etc.

  41. Using Sound in PowerPoint • Playing a background Soundtrack

  42. Advanced Sound Techniques • Audacity and WavePad is used to edit sound files

  43. An Important Note • If a sound file is small (less than 100 Mb) it will be embedded within the slide presentation. • If the sound file is large (more than 100 Mb), Powerpoint will LINK to the file. • THEREFORE THE SOUND FILES NEED TO BE SAVED IN THE SAME FOLDER AS THE POWERPOINT PRESENTATION OR THE LINKING WILL NOT WORK!

  44. Conclusion • Sound files should be used in PowerPoint but don’t get carried away. • It is better to have a few sounds than too many. Some of the sound files in this presentation will not play on your computer because they are larger that 100 Mb

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