Articles tagged “meeting room”
2 articles covering meeting room in acoustic engineering and building design.
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GUIDES19 min read
The 125Hz Problem Nobody Treats — Why Your Meeting Room Still Sounds Like a Cave
Meeting rooms pass RT60 tests at 500Hz and still sound terrible. The culprit is 125Hz bass reverberation — standard acoustic foam panels have α ≈ 0.05 at 125Hz and do almost nothing. Here is the calculation that reveals the problem and the bass trap specification that solves it.
March 14, 2026
bass trap125Hz
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TUTORIALS19 min read
What Is STI (Speech Transmission Index) — Can People Actually Understand Speech in Your Room?
STI measures how much a room degrades speech from source to listener, on a scale from 0 (unintelligible) to 1 (perfect). An STI below 0.50 means one in four words is lost. Here is how STI works, what scores you need, and why reverberation time alone is not enough.
March 14, 2026
STIspeech transmission index