I’m not having a go 😂
These people may be incredibly unreasonable and exaggerating their experience, I don’t know.
I can only say from my own experience with “noise” from a neighbour. For 7 years he has been “working” on his house. Over this time work can start without warning and stop at an undetermined time. It’s very annoying and inconsiderate. However, he has taken to messaging me beforehand to say when he is planning to do some work and for how long.
It has made a huge difference to my own capacity to cope as I now have a choice to plan my day accordingly and my wife no longer has to prevent me from using his lump hammer on his skull.
From what you’re describing, the 2 “noise” experiences aren’t the same. I understand that.
However, it might make a difference to the complainant (no matter how unreasonable you believe them to be) if they were given notice. It lets them know that you recognises their perspective and gives them the choice to f00k off somewhere else for the period of the rehearsal if it’s that invasive to them, or sit and enjoy the wonderful music you’re producing instead of the Archers.