---
title: AUParameterEvent
framework: audiotoolbox
role: symbol
role_heading: Structure
path: audiotoolbox/auparameterevent
---

# AUParameterEvent

A structure that describes a scheduled parameter event.

## Declaration

```swift
struct AUParameterEvent
```

## Topics

### Initializers

- [init()](audiotoolbox/auparameterevent/init().md)
- [init(next:eventSampleTime:eventType:reserved:rampDurationSampleFrames:parameterAddress:value:)](audiotoolbox/auparameterevent/init(next:eventsampletime:eventtype:reserved:rampdurationsampleframes:parameteraddress:value:).md)

### Instance Properties

- [eventSampleTime](audiotoolbox/auparameterevent/eventsampletime.md)
- [eventType](audiotoolbox/auparameterevent/eventtype.md)
- [next](audiotoolbox/auparameterevent/next.md)
- [parameterAddress](audiotoolbox/auparameterevent/parameteraddress.md)
- [rampDurationSampleFrames](audiotoolbox/auparameterevent/rampdurationsampleframes.md)
- [reserved](audiotoolbox/auparameterevent/reserved.md)
- [value](audiotoolbox/auparameterevent/value.md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)

## See Also

### Structures

- [AudioUnitConnection](audiotoolbox/audiounitconnection.md)
- [AudioUnitEvent](audiotoolbox/audiounitevent.md)
- [AudioUnitExternalBuffer](audiotoolbox/audiounitexternalbuffer.md)
- [AudioUnitFrequencyResponseBin](audiotoolbox/audiounitfrequencyresponsebin.md)
- [AudioUnitMeterClipping](audiotoolbox/audiounitmeterclipping.md)
- [AudioUnitMIDIControlMapping](audiotoolbox/audiounitmidicontrolmapping.md)
- [AudioUnitOtherPluginDesc](audiotoolbox/audiounitotherplugindesc.md)
- [AudioUnitParameter](audiotoolbox/audiounitparameter.md)
- [AudioUnitParameterEvent](audiotoolbox/audiounitparameterevent.md)
- [AudioUnitParameterHistoryInfo](audiotoolbox/audiounitparameterhistoryinfo.md)
- [AudioUnitParameterNameInfo](audiotoolbox/audiounitparameternameinfo.md)
- [AudioUnitParameterIDName](audiotoolbox/audiounitparameteridname.md)
- [AudioUnitParameterInfo](audiotoolbox/audiounitparameterinfo.md)
- [AudioUnitParameterOptions](audiotoolbox/audiounitparameteroptions.md)
- [AudioUnitParameterStringFromValue](audiotoolbox/audiounitparameterstringfromvalue.md)