Errata exists for this version of the document.
The AudioVariableType VariableType defines a Multipurpose Internet Mail Extensions (MIME) media type of the AudibleSound Property. This standard recommends use of text code defined in IETF RFC 2045, IETF RFC 2046 and IETF RFC 2047 for MIME types. The AudioVariableType references the Content-Type that is defined as part of the MIME type and commonly used as a reference to a specific MIME. The top-level media type is used to declare the general type of data, while the subtype specifies a specific format for that type of data. Thus, a media type of "audio /xyz" is a sufficient description for a user agent to determine the data is an audio file, even if the user agent has no knowledge of the specific audio format "xyz".
The VariableType is formally defined in Table 78.
Table 78 – AudioVariableType Definition
|
Attribute |
Value |
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|
BrowseName |
AudioVariableType |
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|
IsAbstract |
False |
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|
ValueRank |
−1 (−1 = Scalar) |
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|
DataType |
AudioDataType |
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|
References |
NodeClass |
BrowseName |
DataType |
TypeDefinition |
ModellingRule |
|
|
Subtype of the BaseDataVariableType defined in 7.4 |
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|
HasProperty |
Variable |
ListId |
String |
PropertyType |
Optional |
|
|
HasProperty |
Variable |
AgencyId |
String |
PropertyType |
Optional |
|
|
HasProperty |
Variable |
VersionId |
String |
PropertyType |
Optional |
|