warm standby
(w��rm stand´bī) (n.) A method of redundancy in which the secondary (i.e., backup) system runs in the background of the primary system. Data is mirrored to the secondary server at regular intervals, which means that there are times when both servers do not contain the exact same data.
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- warm-up time
In computers, systems and electronics the warm-up time is the amount of time that a device or system requires to go from a cold start to operating temperature. Warm-up time is usually measured in seconds or minutes.
- watchdog
A watchdog is a device used to protect a system from specific software or hardware failures that may cause the system to stop responding. The application is first registered with the watchdog device. Once the watchdog is running on your system the application must periodically send information to the watchdog device. If the device doesn’t […]
- digital watermark
Also referred to as simply watermarking, a pattern of bits inserted into a digital image, audio or video file that identifies the file’s copyright information (author, rights, etc.). The name comes from the faintly visible watermarks imprinted on stationery that identify the manufacturer of the stationery. The purpose of digital watermarks is to provide copyright […]
- waveform
A commonly used term in the telecommunications industry. Waveform is a graphical representation of a signal as a plot of amplitude versus time, i.e., the shape of a wave.
- wave table synthesis
A technique for generating sounds from digital signals. Wave table synthesis stores digital samples of sound from various instruments, which can then be combined, edited, and enhanced to reproduce sound defined by a digital input signal. Wave table synthesis reproduces the sound of musical instruments better than Frequency Modulation (FM) synthesis. The MIDI standard supports […]