Turning down the volume wouldn’t get rid of the feedback since the signal is already there, but turning down the gain can prevent the sounds from the speaker being amplified through the microphone, preventing feedback. Gain changes the amplitude of the signal and works on a log scale. I was in a different class but in the same room, and the teacher could be heard fine without amplification. It has been bothering me that I couldn’t figure out the sound system.
I tried to help once, but the system was unfamiliar, and after that, the teacher was just patronizing and uninterested in my help. Most of my classes are in the same classroom, and I’m dropping a class due to the teacher using a mic while acting like the feedback and echoes aren’t there. I decided to return to undergrad and get an engineering degree, and I am now a senior. It doesn’t pay well, and I have social anxiety, fibromyalgia, and sound sensitivity, probably due to being autistic. I have been working as a sound engineer since 2010 - for thirteen years now.
