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# init(audioResourceID:parameters:relativeTime:)

Initializes a haptic event from a previously loaded audio resource, specifying event parameters and start time.

```
init(audioResourceID resID: CHHapticAudioResourceID, parameters eventParams: [CHHapticEventParameter], relativeTime time: TimeInterval)
```

## Parameters

`resID`

The resource ID of the accompanying audio signal.

`eventParams`

An array of event parameters to characterize the audio event.

`time`

The start time of the audio event, in seconds.

## Discussion

To register an audio resource, call the [`CHHapticEngine`](/documentation/CoreHaptics/CHHapticEngine) object’s [`registerAudioResource(_:options:)`](/documentation/CoreHaptics/CHHapticEngine/registerAudioResource(_:options:)) method.

---

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