Brooks QS 70 Axis

A line around which a device operates. Example: In a microphone, this would be an imaginary line coming out from the front of the microphone in the direction of motion of the diaphragm.

I/O
Short for "Input/Output' and referring to:
1) An in-line console module that contains controls for the input section, output section and monitor section.
2) A module in electronic gear containing input and output amplifiers for the device.
3) A digital port (connector) able to both receive digital data and output digital data.

Brooks GS 15 Floor
1) An alternate tam meaning Range (a limit on the amount the signal is reduced when the input signal is low by an expander or gate).
2) A shortening of the term Noise Floor (the level of the noise).

Diaphragm
A thin flexible membrane or cone that vibrates in response to electrical signals to produce sound waves. Distortion is usually referred to in terms of total harmonic distortion (THD) which is the percentage of unwanted harmonics of the drive signal present with the wanted signal. Generally used to mean any unwanted change introduced by the device under question.

Brooks TM-22 Capacitance
The property of being able to oppose a change in voltage or store an electrical charge.

Effects
Electronic boxes (usually rack mounted) added to a PA system to subtly change and enhance the signals going through it. Examples include; Reverb, Delay, Compressor, Chorus.

Error Detection
The process of discovery that sonic information bits have been lost in digital audio.

Jack Bay
A series of jacks which have connections for most of the inputs and outputs of the equipment in the control room.

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