On Chrome, Duolingo Does Not Ask for Microphone Permission
I've had this problem several times with Duolingo and Chrome. It does not query to use the microphone, so I get no dialogue to allow it. Every once in a blue moon, I get the notification and as I got it once, I was able to set its permissions. (You cannot directly set permissions for this in Chrome before a query.) Because I cleaned my system, the setting no longer exists and I'm having a heck of a time getting it to query again.
Furthermore, if you could adjust microphone settings in the microphone settings (have Duolingo send a request to use the microphone in these settings, it would be far easier to set up, rather than having me go through a lesson to find a microphone question.)