Glossary

#A

AES67 - Interoperability standard for networked audio transmission allowing systems running different protocols to pass audio between each other.
Antenna - A device that allows transmission and/or reception of RF signals.

#B


#C

CAT-5 - Networking cable standard using four twisted pairs, typically terminated in RJ-45 connectors.
Channels - An audio stream or link.

#D

Dante - Networked audio protocol developed and controlled by Audinate. Typically runs at 48kHz/24 bit. Multiple audio channels can be carried by a single CAT-5 cable.
Digital Enhanced Cordless Telecommunications (DECT) - Communications standard initially used for wireless telephones. Now also used for microphones and other pro-audio equipment.
Duplex - Capable of simultaneous transmit and receive communications.

#E

Ethercon™ - Connector from Neutrik that encases an RJ-45 connector making it more robust with secure locking, commonly used in the entertainment industry.

#F

Four-Wire / 4-Wire - Separate audio transmit and receive connection using balanced audio paths.

#G

GP Input (GPI) - General purpose input typically used for interfacing to equipment that cannot accept serial or network communications. Details of voltage levels and wiring schemes vary so hardware manuals should be consulted before using.
GP Input / Output (GPIO) - General purpose input and output typically used for interfacing to equipment that cannot accept serial or network communications. Details of voltage levels and wiring schemes vary so hardware manuals should be consulted before using.
GP Output (GPO) - General purpose output typically used for interfacing to equipment that cannot accept serial or network communications. Details of voltage levels and wiring schemes vary so hardware manuals should be consulted before using.

#H

Headset - Headphone and microphone combination.

#I

IFB - Interruptible foldback – an audio signal that is inserted into the intercom system for a talent or an operator to listen to program audio which will be dimmed/switched off when someone talks to the talent/operator.
Intercom - A system that allows simple communication between participants. Usually either on a common party line or switched on a point-to-point basis.
IP54 - International Protection Marking standard (IEC 60529) that defines levels of dust and moisture protection. An IP54 rating means that equipment is protected against ingress of dust and splashing of water.

#J


#K


#L


#M


#N

Network - A communication system allowing multiple items of hardware to exchange data.
Network cabling - Cabling that supports network communication. For Ethernet networks this is typically CAT-5 or better, or fibre-optic cabling.

#O


#P

Partyline (PL) - A communication buss that allows multiple people to freely talk and listen to one another simultaneously.
PoE - Power over Ethernet – a standard allowing power to be carried over network cables along with data.
Power Supply - An item of hardware that provides the correct voltages for operation of the equipment.
Program Feed - A program feed is an audio signal of an event, typically from either microphones in the auditorium or a connection from an audio mixer.
Public Address - A sound system to address a large number of people with loudspeakers positioned around a space.

#Q


#R

Rack Unit(s) (RU) - A standard where 1U equals 44.45mm/1¾”. 19” equipment racks are usually defined by their height in ‘U’.
RAVENNA - A networked audio standard created by ALC NetworX. It has multiple profiles that define the audio payload.
RJ45 - A low-cost eight-pole latching connector often used in Ethernet networks.

#S

Show Relay - Same as program feed. A program feed is an audio signal of an event, typically from either microphones in the auditorium or a connection from an audio mixer.
Side Tone - The side-tone level defines how much you hear of your own voice in your own headset.
Stage Announce (SA) - A mechanism to allow intercom operators to trigger a public address system in order to address non-connected personnel and members of the audience.

#T

Two-Wire / 2-Wire - Combined duplex audio connection over two wires, usually with power.

#U


#V


#W

Wired Comms - Intercom system that is connected using cables rather than radio links.

#X


#Y


#Z


#1


#2

2-Wire - Combined duplex audio connection over two wires, usually with power.

#3


#4

4-Wire - Separate audio transmit and receive connection using balanced audio paths.

#5


#6


#7


#8


#9


#0


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