| Sumario: | Researchers modeled noise reverberation times (RT60) using Sabine's formula in a building that housed enclosed and open workspaces to recommend noise controls to address problematic noise. The open floor plan in the building and the use of interior building materials with hard surfaces created this poor acoustic environment. To substantiate the modeled reverberation times, the researchers measured the reverberation times using a sound level meter and a noise signal. Five interior spaces with volumes ranging from 76 m³ to 5,400 m³ were modeled. Three of the spaces were entirely enclosed and two of the spaces had an open floor plan design. The RT60 predictions were then compared to the reverberation times measured in each location. The model performed well in the enclosed spaces, but did not perform well in the open space environments. As the room volumes increased, Sabine's formula model overestimated the reverberation times by larger margins. Using a repeated measures mixed model, it was found that room volume had a significant effect (p = 0.01) on the predicted reverberations times and that the reverberation times calculated by the model were significant (p < 0.001) predictors of the measured reverberation times.
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