Voice Evac Intelligibility Helper
STI (speech transmission index) planning aid — room-by-room speaker layout and reverberation-time flag. NFPA 72 §24.5.2 intelligibility.
In development — ETA Q1 2027
We could ship a placeholder that guesses. We won't. Fire-code calculations get sealed with a designer's stamp — we're taking the time to build this right, cited to NFPA 72 §24.5.2, and reviewed by our NICET III team before it goes live.
What this tool will do
STI (speech transmission index) planning aid — room-by-room speaker layout and reverberation-time flag. NFPA 72 §24.5.2 intelligibility.
Get notified when it ships
One email when this tool launches. No newsletter, no marketing spam.