Articles tagged “diffuse field”
2 articles covering diffuse field in acoustic engineering and building design.
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TUTORIALS17 min read
Deriving Sabine's and Eyring's Reverberation Time Formulas from First Principles
Step-by-step mathematical derivation of Sabine's T60 = 0.161V/A and Eyring's T60 = -0.161V/(S·ln(1-ᾱ)) from the diffuse field energy balance. With worked examples showing why Sabine fails at high absorption and when Eyring is the better choice.
March 14, 2026
RT60Sabine equation
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GUIDES21 min read
Why Sabine's Formula Gives Wrong Results in Open Plan Offices
Sabine's formula assumes a perfectly diffuse sound field — uniform energy density throughout the room. Open plan offices violate this assumption completely. Here is why standard RT60 calculation fails for open offices and what ISO 3382-1 Annex A recommends instead.
March 14, 2026
open plan officeSabine equation