OSX Monterey fix for auto-adjusting volumes with Bluetooth microphones. Add me to your `~/.local/bin` and `chmod +x ~/.local/bin`

mic-fix

#!/bin/bash

set -eo pipefail

function maybe_make_a_volume_adjustment {
    volume=`osascript -e "input volume of (get volume settings)"`;
    (( vol_adj=((volume+50)/2-volume)/5 ));
    if [ ${vol_adj} -lt 0 ]
    then
        sign="-"
    else
        sign="+"
    fi
    if [ ${vol_adj} -ne 0 ]
    then
        echo Adjusting volume by ${vol_adj}
    fi
    osascript -e "set volume input volume (input volume of (get volume settings) ${sign} ${vol_adj#-})";
}

function continuously_control_the_volume {
    while true ; do
        maybe_make_a_volume_adjustment &
        sleep 0.05;
    done;
}

continuously_control_the_volume