Nitpick, but Quirrell cast a Quieting Charm on the rocket in the Azkaban escape, but Harry’s ears were still ringing enough afterward that he couldn’t hear Bellatrix shouting. So it’s not a binary effect; there could be Quieting Charms that are capable of silencing louder noises than others.
Nitpick, but Quirrell cast a Quieting Charm on the rocket in the Azkaban escape, but Harry’s ears were still ringing enough afterward that he couldn’t hear Bellatrix shouting. So it’s not a binary effect; there could be Quieting Charms that are capable of silencing louder noises than others.