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Automatic language switching does not work for SAPI 5 voices #17146
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component/speech-synth-driversneeds-technical-investigationA technical investigation is required to progress the issue.A technical investigation is required to progress the issue.p4https://github.com/nvaccess/nvda/blob/master/projectDocs/issues/triage.md#priorityhttps://github.com/nvaccess/nvda/blob/master/projectDocs/issues/triage.md#prioritytriagedHas been triaged, issue is waiting for implementation.Has been triaged, issue is waiting for implementation.
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component/speech-synth-driversneeds-technical-investigationA technical investigation is required to progress the issue.A technical investigation is required to progress the issue.p4https://github.com/nvaccess/nvda/blob/master/projectDocs/issues/triage.md#priorityhttps://github.com/nvaccess/nvda/blob/master/projectDocs/issues/triage.md#prioritytriagedHas been triaged, issue is waiting for implementation.Has been triaged, issue is waiting for implementation.
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Steps to reproduce:
Make sure Automatic language switching is enabled, and you have multiple SAPI 5 voices in different languages.
Select a SAPI 5 voice. Then, go to a webpage with proper language attributes, where the language is different from your current voice language.
Actual behavior:
The voice is not switched.
Expected behavior:
The voice should be switched to another SAPI 5 voice in the corresponding language, just like when using OneCore voices.
NVDA logs, crash dumps and other attachments:
Several log lines similar to the following:
System configuration
NVDA installed/portable/running from source:
Installed
NVDA version:
2024.1
Windows version:
Windows 11 23H2
Name and version of other software in use when reproducing the issue:
Other information about your system:
Other questions
Does the issue still occur after restarting your computer?
Have you tried any other versions of NVDA? If so, please report their behaviors.
No
If NVDA add-ons are disabled, is your problem still occurring?
Yes
Does the issue still occur after you run the COM Registration Fixing Tool in NVDA's tools menu?
Automatic language switching is implemented for OneCore voices, but not for SAPI 5 voices.
SAPI 5 also supports some XML tags to switch between languages/voices, such as
<voice>and<lang>.