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How can I have a multilinugal (English, French, German and Swedish etc.) voice prompts (selectable by the caller like for English, press 1; for French, press 2; for German, press 3 and for Swedish, press 4), is that possible with the same asterisk box?
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And for text to speech engine, which one of the these at tcts.fpms.ac.be/synthesis/mbrola.html) is the ideal one to integrate with asterisk?
- yes it is. Record all your prompts with filename like wlecome-english.gsm. then through your menu, do things like
exten => wahtever,1,Background(welcome-${lang})
at the beginning of the call set ${lang} with something like
exten => 1,1,Set(lang=english)
exten => 2,1,Set(lang=spanish)
etc etc
as for the voice synthesis you couild probably hack it together, but the two that are known to work are Festival (free) and Cepstral/Swift (commercial).
Thank you IronHelix, you are superb! I will try and get back if I get any problem.