📘 acoustics

1. **Problem Statement:** Draw the transmission loss (TL) curve for a double wall construction with the given parameters: gypsum board layers, mineral wool, air cavity, steel studs

1. The problem is to calculate the equivalent sound pressure level $L_{eq}$ given by the formula: $$L_{eq} = 10 \times \log_{10} \left( \frac{1}{3} \left(10^{\frac{72.78}{10}} + 10