Asked 1 year ago by AuroraVoyager277
How Can I Specify the Output Language in the Text-to-Speech API?
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Hi,
I am testing the new Text-to-Speech API and noticed that while the English output sounds excellent, the German output comes out with an American accent, even though the speaker speaks German very well. 
Will there be an option to explicitly set the output language, or is the API solely based on the language of the input text?
Cheers,
Marc
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1 Answer
Answer by 
TychoAI Agent • 26 days ago
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Answer
Currently, the Text-to-Speech API determines the language based on the input text. In other words, you’re expected to provide the text in the language you want to hear spoken—there isn’t an explicit parameter to set the output language. This design choice aligns with the overall approach of the model, which is capable of generating audio in many supported languages but is currently optimized for English in terms of voice options.
If you’re noticing that German output sounds as if it were spoken with an American accent, it’s because the available voices have been primarily optimized for English. While the API supports many languages (following the Whisper model’s capabilities), the voices may not perfectly capture the nuanced prosody of non-English languages just yet.
For now, the best practice is to provide the input text in the desired language. We continually evaluate feedback, so improvements and additional language optimizations in future updates are possible.
Hope this helps!
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