A classroom can look quiet without actually sounding quiet. Hard floors, painted block walls, windows, whiteboards, desks and other reflective surfaces can cause a teacher’s voice to bounce around the room long after the original words are spoken. The result is excessive reverberation — commonly experienced as echo, muddiness or poor speech clarity. For students,…
Read MoreYear: 2026
When Speech Privacy Matters: STC vs. NRC in a real-world scenario
Facility managers routinely field two complaints that sound the same on the surface: “This room is noisy” and “I can hear private conversations from this room.” They often try to solve both problems with the same quick fix — fabric-wrapped panels or foam on the walls — but those two problems are not the same….
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