Absorption happens where air is moving, not where pressure is high — so thickness and distance from the wall decide everything, and 25 mm of foam was never going to touch 100 Hz.
A room gets covered in acoustic foam. The top end goes noticeably dead — hand claps lose their edge, cymbals sound duller, the room feels quieter. And the bass is exactly as boomy as it was before.
You're reading a preview of this lesson. Upgrade to Mentor to read the rest of it, plus every other Advanced-level lesson on Soundb Learn.
View Plans →Students pay for getting unstuck: ask a concept question, routing issue, DAW confusion, or mix decision tied to this lesson.
Free readers can learn from the public Q&A archive. Paid students can ask their own lesson-specific questions and get mentor replies.