Change Voice in SpeechSynthesizer

Question

I tried to change the speaker, but i dont have enlisted all installed speakers (George, Susan, Jakub) in SpeechSynthesizer class, on the other hand I have one, that is not installed at all (Zira).

What is happening here ? Can i somehow add specific speaker into my project (for example as .dll or something) to be not dependent on computer language/region ?

Answer 1

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UPDATE

As @Jimi mentioned, System.Speech and Microsoft.Speech are different and to avoid confusion, using only one of them should be the right choice.

For System.Speech

1. Go to Settings/Region and Language/Add Language
2. From Settings of the language, download Speech

For example Helen is in en_US package. So, the additional Speech should be downloaded by adding English (United States) language.

For Microsoft.Speech

1. Download a speech from the link below
2. Add a reference to the Microsoft.Speech DLL in the project

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Microsoft Speech Recognition and Text-to-Speech engine data files can be downloaded from the link below;

Speech Recognition and Text-to-Speech Engines for Microsoft supported Languages https://www.microsoft.com/en-us/download/details.aspx?id=27224

For further information:
Microsoft Speech Programming Guide
https://learn.microsoft.com/en-us/previous-versions/office/developer/speech-technologies/hh378466(v%3doffice.14)

SpeechSynthesizer.SelectVoice Method
https://learn.microsoft.com/en-us/previous-versions/office/developer/speech-technologies/dd167624(v%3Doffice.14)

System.Speech.Synthesis Namespace
https://learn.microsoft.com/en-us/dotnet/api/system.speech.synthesis?view=netframework-4.7.2