An additional output from a sound desk that can be used for foldback or monitoring without tying up the main outputs. Each input channel will have a path to the Aux buss. Also used for feeding a signal to an effects processor. See Auxiliary Return.
Ground Lifter
An adapter that takes a three prong power cord and plugs into a two prong outlet, used to disconnect the third (ground) pin of the power outlet. WARNING: It can be VERY DANGEROUS to have no ground connection to the case by using a ground lifter and not grounding the unit by other means.
Brooks VT-50 Electromagnetic Induction or Pick Up
The generation of electrical signal in a conductor moving in a magnetic field or being close to a changing magnetic field.
Compression Ratio
How many dB the input signal has to rise above the threshold for every one dB more output of a compressor or limiter.
Brooks Cinema QS - 95 Headphones
Devices that can be worn on the head with small speakers that fit over the ears (or sometimes into the ears).
Error Detection
The process of discovery that sonic information bits have been lost in digital audio.
Compact Disc CD
A small optical disk with digital audio recorded on it.
Contact Microphone
A device that senses vibrations and puts out an audio signal proportional to the vibrations.
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