Acronym for microwave amplification by stimulated emission of radiation. A member of the general class of microwave oscillators based on molecular interaction with electromagnetic radiation.

1. In communications systems, to obscure, hide, or otherwise prevent information from being derived from a signal.
Note 1: Masking is usually the result of interaction with another signal, such as noise, static, jamming, or other forms of interference.
Note 2: Masking is not synonymous with erasing or deleting.
2. In computing and data processing systems, a pattern of bits… (Read More →)

The level at which an indistinguishable signal of interest becomes distinguishable from other signals or noise.
Note: In acoustics, the masked threshold is usually expressed in dB.

1. In television and video technology, a process in which color signals are used to modify each other for the purpose of altering their color rendition.
Note: The process is often accomplished by suitable cross coupling between primary color-signal channels. [After IEEE 100] [After SMPTE]
2. One way of partial compensation for photo-receptor cot sensitivity, nonoptimum color filters, nonideal display… (Read More →)

1. The pretense by an entity to be a different entity in order to gain unauthorized access. [2382-pt.8]
2. The pretence by an entity to be a different entity [7498-2].

[A] form of spoofing. [INFOSEC-99]

A device that generates periodic, accurately spaced signals that are used for such purposes as timing, regulation of the operations of a processor, or generation of interrupts.

the unique mandatory file containing access conditions and optionally DFs (dedicated files) and/or EFs (extended frames). [T1.707-1998]

In frequency-division multiplexing (FDM), equipment used to provide system end-to-end carrier frequency synchronization and frequency accuracy of tones.
Note: The following types of oscillators are used in the Defense Communications System FDM systems:Type 1 - A master carrier oscillator as an integral part of the multiplexer set.
Type 2 - A submaster oscillator equipment or slave oscillator equipment as an… (Read More →)

Within a hierarchy of encrypting keys and transaction keys, the highest level of key-encrypting key. [After X9.24]