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XY - A stereo recording technique using two identical cardioid or directional microphones placed next to each other at an angle of 90 degrees. This method is employed to overcome the coverage problems of . Used . AB recording. The main disadvantage being that audio from the center of the stage arrives at a 45 degree angle to the mics where the response is not as efficient leaving an apparent gap in t. Used . he stereo field. ...

LCD - A liquid crystal display is a low power, flat, thin display device made up of color or monochrome pixels arranged in front of a light source or reflector.


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White Noise - A random audio signal with a flat power spectral density that contains noise at the same level at all frequencies. The signal's spectral density has equal power in any band and at any frequency in a . Used . given bandwidth. White noise is similar to white light which contains all frequencies. White noise is often used in the field of architectural acoustics to mask distracting or undesirable n. Used . oises in interior spaces....

Hertz - A unit of measure for frequency generally applied to waveforms, one Hertz is equal to one cycle in one second. It is abbreviated Hz so that 100 Hz would be 100 cycles per second. However, the unit m. Used . ay be applied to periodic events other than waveforms like the second hand on a clock, which would cycle at 1 Hz, or a human heart that may beat at 1.2 Hz. Named after the German physicist H. Used . einrich Rudolf Hertz, the name was established in 1930, but did not replace the term cycles per second until the 1970s.

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Followspot - Followspot is a generic term used to describe any number of lighting instruments used to highlight performers on stage. A followspot operator moves the followspot to follow the performer or to accent. Used . some action or prop etc. Somtimes called limes, dating back to the days of limelight.

Followspots are generally much brighter than conventional lighting instruments, and often u. Used . se a lamp with a considerably higher color temperature.