Brooks KS-55 Frequency Shift Key / FSK

The full name for FSK (A simple clock signal that can be used to run a sequencer in time with an audio tape).

Bottom
The bass frequencies (as in "needs more bottom end").

Brooks TM-22 Gain Reduction
The working of a limiter or compressor reducing gain during high-level passages.

Input/Output Module
A set of controls, on one housing, for an in-line console that has two channels (one for recording and one for monitoring) and has controls for all console sections.

Brooks Cinema RM 909 Instrument Amplifier
A device that has a power amplifier and speaker in a case (or in separate cases) to reproduce the signal put out by an electric instrument (such as an electric guitar) and to allow the instrument to be heard.

Cardioid Pattern
A microphone pick up pattern, which has maximum pick up from the front, less pick up from the sides, and least pick up from the back of the diaphragm.

Electromagnetic Field
Magnetic energy put out because of current travelling through a conductor.

Golden Section
A ratio of height to width to length of a room to achieve "good acoustics" and first recommended by the ancient Greeks. The ratio is approximately the width 1.6 times the height and the length 2.6 times the height