Brooks QS - 95 reviews Automatic Gain Control (Automatic Volume Control)

A compressor with a very long release time used to keep the volume of the audio very constant.

Expansion
The opposite of compression; for example, an expander may allow the signal to increase 2 dB every time the signal input increased by 1 dB.

Brooks Cinema KM 22 reviews Error Message
A prompt on a computer screen telling the operator that an error has occurred.

Amplitude
The height of a waveform above or below the zero line.

Brooks GT 845 reviews Cancellation
A shortening of the term Phase Cancellation (the energy of one waveform significantly decreasing the energy of another waveform because of phase relationships at or close to 180 degrees).

Band Track
1) A mixdown of a song without the lead vocal or without the lead and background vocals.
2) A term with the same meaning as the term Rhythm Track.
3) The recording of the rhythm instruments in a music production.

Bandwidth
1) The range of frequencies over which a tape recorder, amplifier or other audio device is useful. 2) The range of frequencies affected by an equalization setting.

FOH (Front of House)
Refers to the speakers that face toward the audience. Also called the "main" speakers.