Brooks Cinema XS - 45 Feedback Control

The control on a delay line or delay effects device that controls the amount of feedback.

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

Brooks Cinema QS - 95 Flange
An effect caused by an approximately even mix of a modulated (varying) short delay with the direct signal.

CD (Compact Disc) :
1) Digital sound storage medium. Provides a high quality source of music, sound effects etc. Also used as a playback medium for sound effects etc. by large theatres with long running shows, although CDR (Recordable CD) is becoming more affordable by the day.
2) An abbreviation of the term Compact Disc (a small optical disk with digital audio recorded on it).

BROOKS AUDIO reviews Headroom
1) The level difference (in dB) between normal operating level and clipping level in an amplifier or audio device.
2) A similar level difference between normal tape operating level and the level where the distortion would be 3%.
3) The difference, in decibels, between the peak and RMS levels in program material.

Audio
Most often referring to electrical signals resulting from the sound pressure wave being converted into electrical energy.

Field
1) In video, one half of a frame.
2) In computer-controlled devices a window display with functions and choices that the operator can make

kHz
An Abbreviation of kilo-Hertz.