TROUBLESHOOTONG GLOW ENGINES By: Grant Tokumi Information Advisor: Robert Harrision ----------------------------- The document is an article for a radio control cars and truck web site. It assumes that the reader knows a little about the hobby, specifically, about nitro glow engines. The audience age varies greatly, probably from around 13 to 40. The document is designed so that the page can load in a reasonable amount of time off the web. Graphic sizes (both file size and physical size) are small. Quicktime and wav files are compressed and are fairly short so file sizes can remain reasonable for downloading at 14.4 or 28.8 baud modems. HTML: A web site was chosen for its ease in making the document interactive. General layout, including table was created with MS Frontpage. Then major line by line editing was done using MS Word 97 with Nescape Navigator 3.0 as the test brwoser. The form used was borrowed from the ICS web server, however, the look of the form was modified to better fit the purpose of the page. Photos: Scanned in at 72 dpi into tif format. 72 dpi was chosen because the image was going to remain in digitized form. Tif format was chosen because it was a good cross-platform format and it was vector based so image integrity remained intact when resizing. The scanned image was edited and resized in Photoshop 4.0, then outputed in jpg format with medium quality (3 on the 10 point scale). Jpg format was chosen over gif format to take advantage of thousands of colors over the gif format's 256 colors. Also background didn't have an image so gif transparency was not necessary. Adobe Illustrator Beta was used to add the text in the photo in the table. It was then exported as a tif file and resized in Photoshop 4.0 into the final jpg graphic. By using a vector based graphic program, stroking the edges of the text was easy, the words could be resized easily, and the edges could remain sharp (not blurry) after resizing. Quicktime: Digitized using a Macintosh Software: Adobe Premiere 4.2 Compression: Video, 50% frame rate: 12 fps size 160X120 Edited and remastered with: Software: Adobe Premiere 4.2 Compression: Cinepak, 50% frame rate: 12 fps Keyframes every 7 frames Millions of colors size 160X120 Mpg format was not an option because the video required audio, and mpg audio resources were not available. Quicktime was chosen over avi because avi was not supported very well for macs, while quicktime format was better supported on the PC side. Also, web browsers like Netscape Navigator have built in plugins to view quicktime movies. A seperate viewing program is not required. Cinepak compression was used because its is a good cross-platform compression. File size was also minimized by: Using small window size (160x120) Reducing quality of compression to 50% Using 12 fps which is fast enough so the video don't look jumpy. Keyframes every 7 frames Wav file: Kikaida - 01 Digitized off CD using a Pentium 133 Processor Software: Adobe Premiere 4.2 sample rate: 22kHz, 8 bit mono Wav file was embedded with video clip and final quicktime sampled at 11 kHz, 8 bit mono Wav file was chosen because the digitizing software saved the file as a wav file, and web browsers like Netscape have plugins to play wav files. The audio file size was minimized by sampling at low rates. Stereo was not necessary in the video so mono was sufficient. Most computer speakers don't reproduce high and low frequencies very well so high frequency and high sampling rate was not necessary.