Dispatch.
While this may bother the hobbyist, image what it is like to be a EMT, FFer, or LE having to listen to a dispatch center that is located in what sounds like an indoor warehouse with no partitions or sound deadening material, a dispatcher with a speech impediment or a very strong accent, poorly selected / poorly set up radio audio, a car radio monkey engineered to fit on a police motor, etc. for 10 or more hours a day.
Everyone tries to get the best gear they can for pennies, but very few agencies/end users consider the dispatch or broadcast area [a van truck, SUV, motor, etc.] to be anywhere near relevant. Some things can be fixed - I knew a dispatcher who brought in and hung up bath towels to deaden reflective sound from a wall. Others can't.
When I trained new officers out of the academy, I had a comms supervisor record their transmissions so that they could hear what they sounded like. Some talked like they were in flight ops in a war zone, some whispered, some used 'uhhh....' far too much, etc. The feed back was so helpful that the comm supervisor ended up adopting it for their new hires. Tempo and tone, no matter the incident, was critical to be heard and understood.
The goal was to sound like a 25 year veteran as a airline captain, not a screaming mimi.