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# PHASEGlobalMetaParameterAsset

A reference to a registered metaparameter that the app can share with multiple sound events or sources.

```
class PHASEGlobalMetaParameterAsset
```

## Overview

The engine’s [`registerGlobalMetaParameter(metaParameterDefinition:)`](/documentation/PHASE/PHASEAssetRegistry/registerGlobalMetaParameter(metaParameterDefinition:)) function returns an instance of this class for a parameter you register. Then, you access the actual metaparameter by using this class’s [`identifier`](/documentation/PHASE/PHASEAsset/identifier) as the key for metaparameter dictionary, for example, a sound event’s [`metaParameters`](/documentation/PHASE/PHASESoundEvent/metaParameters) or the asset registry’s [`globalMetaParameters`](/documentation/PHASE/PHASEAssetRegistry/globalMetaParameters).

As an opaque derived object, this class adds no properties to the subclass.

## Relationships

### Conforms To

[`Hashable`](/documentation/Swift/Hashable)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`Equatable`](/documentation/Swift/Equatable)

[`CVarArg`](/documentation/Swift/CVarArg)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

### Inherits From

[`PHASEAsset`](/documentation/PHASE/PHASEAsset)

---

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