IFC 4.3.x development

7.4.2.1 IfcAudioVisualApplianceTypeEnum

7.4.2.1.1 Semantic definitions at the entity

Defines the range of different types of audio-video devices that can be specified.

HISTORY  New enumeration in IFC4.

Items

AMPLIFIER
CAMERA
DISPLAY
MICROPHONE

An acoustic-to-electric transducer or sensor that converts sound into an electrical signal. Microphones types in use include electromagnetic induction (dynamic microphones), capacitance change (condenser microphones) or piezoelectric generation to produce the signal from mechanical vibration.

PLAYER

A device that plays audio and/or video content directly or to another device, having fixed or removable storage media.

PROJECTOR

An apparatus for projecting a picture on a screen. Whether the device is an overhead, slide projector, or a film projector, it is usually referred to as simply a projector.

RECEIVER

A device that receives audio and/or video signals, switches sources, and amplifies signals to play through speakers.

SPEAKER

A loudspeaker, speaker, or speaker system is an electroacoustical transducer that converts an electrical signal to sound.

SWITCHER

A device that receives audio and/or video signals, switches sources, and transmits signals to downstream devices.

TELEPHONE

A telecommunications device that is used to transmit and receive sound, and optionally video.

TUNER

An electronic receiver that detects, demodulates, and amplifies transmitted signals.

COMMUNICATIONTERMINAL
RECORDINGEQUIPMENT

A recording equipment is a device that records telephone calls or other types of audio data. It also provides the function of archiving and immediate replay.

USERDEFINED
NOTDEFINED

7.4.2.1.1 Formal representations

TYPE IfcAudioVisualApplianceTypeEnum = ENUMERATION OF
	(AMPLIFIER
	,CAMERA
	,DISPLAY
	,MICROPHONE
	,PLAYER
	,PROJECTOR
	,RECEIVER
	,SPEAKER
	,SWITCHER
	,TELEPHONE
	,TUNER
	,COMMUNICATIONTERMINAL
	,RECORDINGEQUIPMENT
	,USERDEFINED
	,NOTDEFINED);
END_TYPE;