voice | Optional text-to-speech voice type. For premium text-to-speech use alice or prescribe a specific Amazon Polly voice in the form of Polly.VoiceId. If you want to use neural voice, use the following format: Polly.VoiceId-Neural. The ElevenLabs integration requires providing an API key that can stored in the secrets storage integration secrets documentation for more details. The voice can be specified in the following way: ElevenLabs.ModelId.VoiceId. For basic text-to-speech use man or woman. Only en-US language is supported in that case. | alice, Polly.VoiceId, Polly.VoiceId-Neural, ElevenLabs.ModelId.VoiceId, man, woman | man |