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Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
Full-duplex audio technology; used for the elimination of acoustically-coupled return echoes within a teleconference room. Note that all microphones connected to an AEC are active at all times. Consequently, as more microphones are added, the total transmitted noise level (caused by picking up room ambient noise) increases. See also Tail Time, Echo Suppresser, and Echo Return Loss Enhancement.
Industry:Entertainment
Video signals in which a continuously variable voltage or current (rather than a set of digital numbers) represents a pixel.
Industry:Entertainment
An area in which sound waves are attenuated due to the presence of an acoustic absorber or reflector in the path of the sound waves.
Industry:Entertainment
An interface between a display controller and a display in which pixel colors are determined by the voltage levels on three output lines (RGB). Theoretically, an unlimited number of colors can be supported by this method (24 bits per pixel allows 16,777,216 colors). The voltage level on any line varies between zero volts (for black) to about 700 millivolts (for maximum brightness).
Industry:Entertainment
A type of speaker design using a sealed cabinet.
Primarily used for low frequency enclosures, acoustic suspension designs use the air mass within the cabinet as a “spring” to help return the relatively massive speaker to the rest position. This allows heavier, longer throw drivers to be used, but results in a less efficient design requiring more amplifier power.
Industry:Entertainment
A video monitor which accepts analog signals. Several types of inputs are accepted by analog monitors: composite video, RGB & sync, Y/C, YUV and any combination of these formats. The signals transmit- ted to an analog monitor are usually between 0 and 1 V and use 75-ohm coaxial cables.
Industry:Entertainment
The duration of a scanning line minus that period devoted to the horizontal blanking interval.
Industry:Entertainment
The common form of magnetic recording where the recorded waveform signal maintains the shape of the original waveform signal.
Industry:Entertainment
The total number of scanning lines minus those scanning lines devoted to the vertical blanking interval.
Industry:Entertainment
A change in picture geometry to compress one direction (usually horizontal) more than the other. Anamorphic squeeze lenses made CinemaScope possible. Occasionally, when widescreen movies are transferred to video, an anamorphic squeeze will be used (usually only in credits) to allow the smaller aspect ratio of television to accommodate the larger movie aspect ratio. Some ATV proponents have suggested a gentle anamorphic squeeze as a technique to assist in aspect ratio accommodation.
Industry:Entertainment
