I have many concepts in my playbox.
When I thought of "quiet," I first thought about space. And how quiet can come from within an individual, even within a crowd.
Color palettes would be important here.
Then, I thought about breaking the rules a bit and going for both quiet and loud. Because one can't really have quiet without loud, and vice versa, right? It's all relative.
Punctuation would make for some interesting graphic quadrants. Same with time of day. As for the bottom, both day and night can encompass quiet and loud, depending on activity and mindset.
What do you think? I'd love any feedback!
Playing with a lot of different ideas here.