Word "Persien" not pronounced correctly with German voice

fnx 1 Reputation point
2022-08-02T07:40:22.947+00:00

The word "Persien" is not pronounced correctly with the German Voice "de-DE-ConradNeural"
Even when I added the IPA to the lexicon it still wasn't quite right.
IPA: ˈpɛʁzi̯ən
Lexicon entry: <lexeme><grapheme>Persien</grapheme><phoneme>ˈpɛʁzi̯ən</phoneme></lexeme>
(lexicon lang is de-DE)

Azure TTS pronounciation: iə is read as a diphtong, which is not correct
Correct pronounciation: https://upload.wikimedia.org/wikipedia/commons/9/95/De-Persien.ogg

This can be reproduced by using the following SSML on the demo site (or by setting the language to Germany, selecting the voice Conrad and entering "Persien" in the text field):
https://azure.microsoft.com/en-us/services/cognitive-services/text-to-speech/?cdn=disable#features

SSML:
<speak xmlns="http://www.w3.org/2001/10/synthesis" xmlns:mstts="http://www.w3.org/2001/mstts" xmlns:emo="http://www.w3.org/2009/10/emotionml" version="1.0" xml:lang="de-DE"><voice name="de-DE-ConradNeural"><prosody rate="0%" pitch="0%">Persien</prosody></voice></speak>

Azure AI Speech
Azure AI Speech
An Azure service that integrates speech processing into apps and services.
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  1. YutongTie-MSFT 53,986 Reputation points Moderator
    2022-09-05T09:46:05.877+00:00

    Hello @fnx

    Thanks for reporting this issue again.

    This is an update - this issue has been forwarded to product engineering team and they are working on this issue. I hope it will be fixed soon.

    Regards,
    Yutong

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