kSpeechOutputToExtAudioFileProperty

Set the speech output destination to an extended audio file or to the computer’s speakers.

Declaration

let kSpeechOutputToExtAudioFileProperty: CFString

Discussion

The value associated with this property is a CFNumber object whose value is an ExtAudioFileRef. To write the speech output to an extended audio file, use the file’s ExtAudioFileRef; to generate sound through the computer’s speakers, use NULL.

This property works with the SetSpeechProperty(_:_:_:) function.