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# coordinateRateChange(to:options:)

Coordinates a rate change across all participants, waiting for others to become ready, if necessary.

```
func coordinateRateChange(to rate: Float, options: AVDelegatingPlaybackCoordinatorRateChangeOptions = [])
```

## Parameters

`rate`

The playback rate for the group to use.

`options`

Additional configuration of the rate change.

## Discussion

When the rate changes from zero to nonzero, the coordinator may also wait for participant suspensions from the [`suspensionReasonsThatTriggerWaiting`](/documentation/AVFoundation/AVPlaybackCoordinator/suspensionReasonsThatTriggerWaiting) property.

Don’t call this method if the rate change doesn’t affect the group, or if the group doesn’t have control over local playback temporarily. For example, don’t call the method for a pause that occurs due to an audio session interruption. In those cases, inform the coordinator by beginning a suspension with an appropriate reason.

The suspension stops the coordinator from issuing further commands to its delegate. After beginning a suspension, you can reconfigure your app’s playback object as necessary.

> Note:
> Calling this method while the coordinator is in a suspended state affects only the local playback object. It doesn’t affect group state, even after the suspension ends.

---

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