MediaPipeTasksAudio Framework Reference
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SynthesisOptions
struct SynthesisOptions: Sendable, Equatable
Per-utterance synthesis overrides passed to TextToSpeech.synthesize(_:options:) and TextToSpeech.synthesizeStream(_:options:). Both fields default to nil so non-English voices (e.g. "ef_dora", "zf_xiaobei") automatically infer their native language from the voice metadata.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2026-11-07 UTC."],[],[]]