I saw several post already without a satisfying answer about this issue in the forum so i wanted to post my solution as it worked for me.
Problem: the voice volume is too low so it’s difficult to understand anything while riding.
Solution:
Go to the Text-To-Speech settings on your phone.
There is a menu item called “preferred engine” which is assigned most of the time to “Speech Services by Google” on this line you will see a gear symbol for its setting. click on it.
Then you will find an entry called something like “Amplify speech volume”. This will boost the volume of the speech.
English: Settings → Text-To-Speech output → Preferred engine → Click on the little gear to enter the settings → Enable “Amplify speech volume”
German: Einstellungen → Text-zu-Sprache-Ausgabe → Bevorzugtes Modul → Auf Zahnrad clicken.
“Ausgabelautstärke anheben” einschalten.
