BROOKS AUDIO DESIGN Electrons

Negatively charged particles, which revolve around the centre of atoms. The movement of such electrons down a conductor causes electrical current.

Insert
1) A punch in of the all of the tracks being recorded in a recording session.
2) On Solid State Logic consoles, placing an outboard piece of gear in the channel by patching and activating a switch.

Brooks Cinema XS - 45 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).

Key
The control of a dynamics processing device by an external audio signal.

Brooks Cinema XB 33 Gain
1) Knob usually found at the top of each input channel on the soundboard. Used to set input levels of the separate channels to relatively equal positions.
2) The amount of increase in audio signal strength, often expressed in dB.

Earth
The British version of the term Ground (In electronics, a place that has zero volts).

Harmonic Distortion
The presence of harmonics in the output signal of a device which were not present in the input signal.

Filter
1) A device that removes signals with frequencies above or below a certain point called the cut-off frequency.
2) An equalizer section, used in this sense because filters are used with other components to give an equalizer its frequency response characteristics.
3) The action of removing signals of some frequencies and leaving the rest.
4) A mechanical device to smooth out speed variations in tape machines called a Scrape Flutter Filter- more usually called a Scrape Flutter Idler