#4 Speech becomes garbled when VoiceOver reads a specific passage using Japanese voices

This article was automatically translated. The original article was written in Japanese.

Overview

When the following passage is read aloud, the pronunciation becomes garbled and unintelligible. Because the pronunciation itself is corrupted, slowing down the speaking rate does not make it understandable.

9月からその解決をめぐって怪情報（先にAnthropic、他の数学者が解いた等）が流れていた、ミレニアム賞問題であるナビエ・ストークス方程式問題の解決ですが、本当に解決できたらしいとOpenAIから発表がありました（Leanの形式証明あり）。

Steps to reproduce

Paste the passage above into any suitable text field. Then move VoiceOver focus to the passage to have it read aloud. I have attached recordings of the actual speech output for reference.

Affected voices:

Kyoko (Enhanced)
Otoya (Enhanced)

This issue is not limited to iOS. Reading the same passage on the latest version of macOS produces the same issue. This appears to be an issue with the speech synthesis system shared across Apple products.

Expected fix from Apple

The passage should be read aloud correctly.

Temporary workaround

This issue can be avoided by switching to another voice, such as the lower-quality standard version of Kyoko or Otoya. However, this is not a permanent solution. I hope Apple will fix it.