AVSpeechSynthesisVoice SpeechVoices cannot obtain the complete list of Siri voice packets

For example, download the Siri Male package in "Settings->Accessibility->VoiceOver->Speech->Voice". However, the list of speech packets retrieved from the [AVSpeechSynthesisVoice speechVoices] method does not contain information about the Siri Male.
How do I get the complete list of voice packets?
  • 1. Moreover, is there a way to download the enhanced voice packages from within an application? (e.g. a package dependency, or a system method to invoke the download)

AVSpeechSynthesisVoice SpeechVoices cannot obtain the complete list of Siri voice packets
 
 
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