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Large Language ModelsApple Machine LearningPublished: Jul 29, 2026, 10:00 JST

Apple Develops Memory-Efficient Audio for Siri Expressive Voices

Apple Develops Memory-Efficient Audio for Siri Expressive Voices

Apple has released technical details on the audio synthesis architecture behind Siri Expressive Voices, which generate rich, configurable speech in real time entirely on device using AFM 3 Core Advanced, Apple's most powerful on-device foundation model.

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