Problem with Text-to-speech

[Luminous]

Hi, while using HereWeGo App I noticed the bad voice quality, more a robot voice one barely can understand, especially while being in a car. I came to know that with the new version of the App no own voices are included but system Text-to-Speech voices are used. And there are only two very bad ones.
So my question: Is there any option to add other voices or to implement another speech system?

Thank you

[aibd]

Alternative to eSpeak?

I found a solution that I think most would find useful. Ivona TTS (Text To Speech) is one of the best sounding voices. In fact, it was good enough for Amazon to buy it, remove it from the playstore, and make it as a speech engine for businesses so they can charge a lot for it. Fortunately for us, the old apk file and some of the voices are still out on the internet to download from other places. The installation of the voice files is not simple but it isn’t too complex, probably a difficulty…