Room Mode Calculator
This calculator finds the axial standing-wave frequencies of a rectangular room: f = n times c over twice the dimension, for the first three orders on each axis. Rooms whose dimensions sit in simple ratios stack modes on the same frequency, and those clustered modes are what a room treatment or dimension change should chase first. Enter length, width, and height to get the mode series; add an RT60 to get the Schroeder frequency where modal behavior hands over to statistical reverberation.
This runs on the same engine as the agents
On the calculator the math stands alone. Inside Avria it runs across a whole room, cites the clause behind every call, and lands in a complete BOM you can check line by line.
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