MPEG - Motion Picture Experts Group. Audio data file format MP3 (MPEG-1 Audio Layer-3). A format for compressed movie files using similar technology to jpeg.
MP3 - A coding standard for compression of audio data: MPEG-2 Layer 3. A compressed audio format that is popular for downloading from the internet and for use with memory-based audio players. Files may be recorded on CDR or CD-RW media for playback in compatible DVD players, audio CD players, and CD-ROM drives. Files are usually named as .mp3. Sound quality varies as a function of the recording/encoding bit rate. Anything recorded with less than 128 kbps data rate will sound degraded. For a high fidelity home audio system, we recommend MP3s are encoded at 256 kbps.
Plug-In - A small application which extends the built in capabilities of your web browser. Examples include Macromedia's Shockwave providing animation, and RealAudio offering streamed sound files on the Internet. The multimedia files do not need to be downloaded before shown or played.
POP - Post Office Protocol - a method of storing and returning email.
Protocol - An agreed set of rules by which computers exchange information.
Real Audio- Software that allows sound files to be transmitted from the Internet back to the user?s PC in streams. What actually happens is that the file starts playing (i.e. you hear the music) before all of the data has been received - giving the effect of playing the sound instantaneously.
Search engine -A tool that enables users to locate information on the internet. Search engines use keywords, entered by users to find web sites which contain the information which is being sought.
Shareware - Software that is available on a free limited trial basis. Sometimes this is a fully featured product, other times it lacks some of the features of the commerical version. If you find the product useful, you are expected to register the software, for which in return you will receive the full featured commercial version.
USB - Universal Serial Bus. A bidirectional, isochronous, dynamically attachable serial interface for adding peripheral devices such as game controllers, serial and parallel ports, and input devices on a single bus.
Worm - A program that reproduces itself over a network, usually performing malicious actions, such as using up the computer's resources and possibly shutting the system down.
Virus - A program that is loaded onto your computer without you knowing about it. Viruses can make copies of themselves, quickly using up all the available memory. Some viruses can transmit themselves across networks.
Upload - To copy a file from a local computer connected to the Internet to a remote computer. The opposite of download.
URL - Uniform Resource Locator - the world wide web address of a site on the internet. The URL for the BBC is http://www.bbc.co.uk .
WAV - file format developed jointly by Microsoft and IBM as the standard format for sound on PCs. WAV sound files end with a .wav extension and can be played by nearly all Windows applications that support sound.
WMA - Windows Media Audio. Developed by Microsoft, like MP3 this is a compressed audio format, but with some copyright protection. Microsoft claims that WMA features better audio quality for the same file size as a comparable MP3 file. Files may be recorded on CDR or CDRW media for playback in compatible DVD players and computers. Files are usually named as .wma. Like MP3, sound quality varies as a function of the recording/encoding bit rate.
Winsock - An interface which allows Windows to use Web browsers and FTP programs.
ZIP - A compressed file format. Many files available on the Internet are compressed or zipped in order to reduce storage space and transfer times. To uncompress the file, you need a utility like WinZip (for Windows).