Microphone Stopped Working

[ECHtoplasm]

So I've been having this problem recently with mumble where my microphone won't work. The microphone is functional in game, when I try to listen to it through audio devices, but it won't work only in mumble. I've used mumble for a year now and this problem only started occurring about two weeks ago. Here are some additional details:

I've tried using other mics, same problem.

I've tried restarting mumble.

I've tried reinstalling mumble.

I've tried restarting my computer.

Occasionally the microphone will work after messing around with the Echo settings (switching back and forth between mixed, multi, and none), but the problem will start again after a few minutes.

I've searched everywhere for anyone who has solved this problem, but have turned up nothing. Please help!