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But only for those languages?

• plorkyeran 5y ago
  Sure? It suggests they have a new TTS engine which they used for the new languages, but they kept the old engine around for Intel macs rather than dropping existing functionality.
• Uehreka 5y ago
  Feels like the kind of thing where maybe there was an architectural initiative to move from a cumbersome speech data format to something more elegant that required the Neural Engine. Since they already had the old languages in the old format, they kept that data around, but for the new languages opted to only ingest the easier-to-work-with format. But hey, I’m guessing and you’re Saurik: I have a feeling you know more about this than me and may have considered and dismissed this possibility for a good reason.