The guy that originally tweeted about this was involved in its development when working at Apple, and has confirmed that this is the intended use for this new API. This is a similar concept, except the audio unit and question is a speech synthesizer providing voices to the OS, and intern to all apps using the speech synthesis framework, such as VoiceOver and Speak Selection. This is based on audio unit extensions, which were originally designed to be used with audio software such as logic pro and GarageBand to add third-party effects and instruments to these applications, but make them available systemwide so that the same plug-ins could be used across different software. Speech Synthesis Provider is providing synthesizers to the system for use with AV Speech Synthesizer. This is distinct from AV Speech Synthesizer, which from what I understand is for use with apps that utilize TTS to read content. ![]() Yes, this API is intended for developers to create new speech synthesizers.
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