AVSpeechUtterance Mandarin voice output replaced by SIRI language setting after upgraded the IOS to 18

Media Technologies Audio
KIM_WAN OP
Created 1w
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Hi, Apple's engineer.

Hoping that you can reply to this one.

We're developing a Text-to-Speak app. Everything went well until the IOS got upgraded to 18.

AVSpeechSynthesisVoice(language: "zh-CN") is running well under IOS 16 AND IOS 17. It speaks Mandarin correctly.

In IOS 18, we noticed that Siri's Language setting interrupted the performance of AVSpeechSynthesisVoice. It plays Cantonese instead of Mandarin.

Buggy language setting in Siri that affects the AVSpeechSynthesisVoice :

  1. Chinese (Cantonese - China mainland)
  2. Chinese (Cantonese -Hong Kong)
Replies  1
Boosts  2
Views  193
Participants  1
KIM_WAN OP
1w

Some additional information, we are using xcode 15

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AVSpeechUtterance Mandarin voice output replaced by SIRI language setting after upgraded the IOS to 18
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