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# init(forWriting:settings:)

Opens a file for writing using the specified settings.

```
init(forWriting fileURL: URL, settings: [String : Any]) throws
```

## Parameters

`fileURL`

The path of the file to create for writing.

`settings`

The format of the file to create.

## Return Value

A new `AVAudioFile` instance for writing.

## Discussion

This method infers the file type to create from the file extension of `fileURL`, and overwrites a file at the specified URL if a file exists.

The file opens for writing using the standard format [`AVAudioCommonFormat.pcmFormatFloat32`](/documentation/AVFAudio/AVAudioCommonFormat/pcmFormatFloat32). For more information about the `settings` parameter, see the [`settings`](/documentation/AVFAudio/AVAudioRecorder/settings) property in the [`AVAudioRecorder`](/documentation/AVFAudio/AVAudioRecorder) class.

## See Also

[`url`](/documentation/AVFAudio/AVAudioFile/url)

The location of the audio file.


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