IfcAudioVisualApplianceTypeEnum

Item	SPF	XML	Change	Description
IFC2x3 to IFC4
IfcAudioVisualApplianceTypeEnum			ADDED

Semantic definitions at the type

Type definition

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

HISTORY New enumeration in IFC4.

Enumeration definition

Constant	Description
AMPLIFIER	A device that receives an audio signal and amplifies it to play through speakers.
CAMERA	A device that records images, either as a still photograph or as moving images known as videos or movies. Note that a camera may operate with light from the visible spectrum or from other parts of the electromagnetic spectrum such as infrared or ultraviolet.
DISPLAY	An electronic device that represents information in visual form such as a flat-panel display or television.
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.
USERDEFINED	User-defined type.
NOTDEFINED	Undefined type.

Formal representations

XSD Specification

 <xs:simpleType name="IfcAudioVisualApplianceTypeEnum">

  <xs:restriction base="xs:string">

   <xs:enumeration value="amplifier"/>

   <xs:enumeration value="camera"/>

   <xs:enumeration value="display"/>

   <xs:enumeration value="microphone"/>

   <xs:enumeration value="player"/>

   <xs:enumeration value="projector"/>

   <xs:enumeration value="receiver"/>

   <xs:enumeration value="speaker"/>

   <xs:enumeration value="switcher"/>

   <xs:enumeration value="telephone"/>

   <xs:enumeration value="tuner"/>

   <xs:enumeration value="userdefined"/>

   <xs:enumeration value="notdefined"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcAudioVisualApplianceTypeEnum = ENUMERATION OF (

 AMPLIFIER, 
 CAMERA, 
 DISPLAY, 
 MICROPHONE, 
 PLAYER, 
 PROJECTOR, 
 RECEIVER, 
 SPEAKER, 
 SWITCHER, 
 TELEPHONE, 
 TUNER, 
 USERDEFINED, 
 NOTDEFINED);
END_TYPE;


 EXPRESS-G diagram

	Audio Visual Appliance Type Enum
	Énumération des types d'appareil audiovisuel