Brooks KM 77 Feedback

1) The delayed signal sent back to the input of a delay line, used in repeat-echo effects.
2) The pickup of the signal out of a channel by its input or the howling sound that this produces.
3) In an amplifier, the phase reversed output signal sent back to its input, reducing gain but also distortion and noise.
4) This occurs when the sound coming out of the speakers goes back into the microphones, then back out the speakers, then back into the mics…and so on. This can build very quickly to a point where everyone in the room is holding their ears and screaming at you. It can also cause damage to the PA.

Group Master
A slide control used to send out a control voltage to several VCA faders in individual channels, thus controlling the gain of several channels.

Brooks Cinema QS - 95 Frequency
The number of cycles of a waveform occurring in a second.

Line Input
An input designed to take a line level signal.

Brooks Audio Design TM-22 Attenuation
A making smaller: reduction of electrical or acoustic signal strength.

Cut-off Rate (Slope)
The number of dB that a filter reduces the signal for each octave its frequency past the filter's cut-off frequency (outside of the pass band).

File
A collection of digital data stored in a computer's memory bank or on a floppy disc.

Hi-Z
An abbreviation of the term High Impedance (Impedance of 5000 or more ohms).