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# AVMIDINoteEvent

An object that represents MIDI note on or off messages.

```
class AVMIDINoteEvent
```

## Topics

### Creating a MIDI Note Event

[`init(channel:key:velocity:duration:)`](/documentation/AVFAudio/AVMIDINoteEvent/init(channel:key:velocity:duration:))

Creates an event with a MIDI channel, key number, velocity, and duration.

### Configuring a MIDI Note Event

[`channel`](/documentation/AVFAudio/AVMIDINoteEvent/channel)

The MIDI channel.

[`key`](/documentation/AVFAudio/AVMIDINoteEvent/key)

The MIDI key number.

[`velocity`](/documentation/AVFAudio/AVMIDINoteEvent/velocity)

The MIDI velocity.

[`duration`](/documentation/AVFAudio/AVMIDINoteEvent/duration)

The duration for the note, in beats.


---

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