---
title: soOutputToFileWithCFURL
framework: Application Services
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.3+]
path: applicationservices/1552228-speech-channel_information_constants/sooutputtofilewithcfurl
---

# soOutputToFileWithCFURL

Pass a `CFURLRef` in the `speechInfo` parameter to write to this file, or `NULL` to generate sound.

## Declaration

```occ
soOutputToFileWithCFURL = 'opaf'
```

## Discussion

This selector works with the `SetSpeechInfo` function.