It has happened a few times during my Japanese lessons when I have been asked to test my pronunciation with my microphone. (Example, Play It! Hear It!Say It! Extra Vocabulary!)
I've attempted to pronounce the word(s) correctly however I receive an error. The Voice to Text software interprets what I have said and shows me with green text where I have correctly pronounced it and red text where I have said something incorrectly.
In many instances it generate Kanji, which might be correct however at no point in my course have I yet learned how to understand Kanji, nor is Kanji pronunciation based so showing me an incorrect Kanji does not help me to understand how I've incorrectly pronounced a word. It leads to a frustrating experience.
The most recent example would be the term kaitenzushi. I can see how it is written with kanji and kana, and both with kana only and romaji only as I have those options selected. When I speak I am given 回転寿司 as my answer which is incorrect, but also not helpful.