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# AudioQueueSetParameter(_:_:_:)

Sets a playback audio queue parameter value.

```
func AudioQueueSetParameter(_ inAQ: AudioQueueRef, _ inParamID: AudioQueueParameterID, _ inValue: AudioQueueParameterValue) -> OSStatus
```

## Parameters

`inAQ`

The playback audio queue that you want to set a parameter value on.

`inParamID`

The ID of the parameter you want to set. In OS X v10.5, audio queues have one parameter available: `kAudioQueueParam_Volume`, which controls playback gain.  See [Audio Queue Parameters](/documentation/AudioToolbox/1552626-audio-queue-parameters).

`inValue`

The parameter value to set.

## Return Value

A result code. See Result Codes.

## Discussion

Use this function to change the settings for a playback audio queue directly. Changes take effect immediately. To set playback gain at the granularity of an audio queue buffer, use the [`AudioQueueEnqueueBufferWithParameters(_:_:_:_:_:_:_:_:_:_:)`](/documentation/AudioToolbox/AudioQueueEnqueueBufferWithParameters(_:_:_:_:_:_:_:_:_:_:)) function.

## See Also

[`AudioQueueEnqueueBufferWithParameters`](/documentation/AudioToolbox/AudioQueueEnqueueBufferWithParameters(_:_:_:_:_:_:_:_:_:_:))

Adds a buffer to the buffer queue of a playback audio queue object, specifying start time and other settings.


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