1. Utah State Topics Sound  Timeline  ActionScript  Sound Design for Instruction Video

2. Utah State Sound design (Bishop & Cates, 2001) Music  Set mood/control pacing  Keep short Narration  Text <= narration Environmental sounds  Inverse length relationships  First person (immersion)

3. Utah State Sound design (cont.) Referential sound  Metaphor reinforcement  Feedback/consistency (audio syntax) Learner control  On/off  Replay

4. Utah State Sound formats supported by Flash MX TypePCMac.mp3xx.wav*xx.aiff*xx.auxx.midi.qta or.mov (quicktime)xx

5. Utah State Impacts on file size Sample Rate (kHz) Sample Size (bits)

6. Utah State Sound compression in Flash MX CompressionUse ADPCMGood for short sound effects (correct/incorrect response, button clicks, etc... ) MP3Ideal for music, best general purpose choice SpeechNew to Flash MX, great for voice only RAWNo compression = huge file sizes, but best quality Adapted from Flash MX Bible

7. Utah State Issues with sound Synch problems – kicker solution Flash MX (previous version) Event vs. Stream

8. Utah State Controlling sound with ActionScript //creates a new sound object in Action Script mySound = new Sound(); //tells it to pull up the library member //with the linkage name "music" mySound.attachSound("music"); //tells it to play from the beginning, and //loop 20,000 times. mySound.start(0, 20000); //tells the sound to stop playing. mySound.stop();

9. Utah State Loading external.swf files //creates a movie clip placeholder myClip = this.createEmptyMovieClip(“myClip”, 0); //attaches.swf to movie clip placeholder loadMovie(“swfName.swf”, myClip); //plays movie clip (and thus plays.swf inside) myClip.play();

10. Utah State Video Sorenson compression Live stream Flash Communication Server MX  http://www.macromedia.com/devnet/mx/fl ashcom/articles/odopod.html http://www.macromedia.com/devnet/mx/fl ashcom/articles/odopod.html.FLV (external/preferred internal) Factors that affect video size  Frames per second  Picture quality  Dimensions (height/width)

11. Utah State Video compression Two choices internal to flash Need relevant codecs in order to compress.