Heterogeneous Acoustic Insulation

R value 1(dB):

Surface 1(m²):

R value 2 (dB):

Surface 2(m²):

How to Calculate Global Acoustic Insulation for a Heterogeneous Wall

Calculating the global acoustic insulation of a heterogeneous wall requires evaluating the transmission loss for each element, weighted by its corresponding surface area. This method provides a reliable and accurate measure of sound insulation performance for complex wall systems.

Formula for Acoustic Insulation Calculation

The formula used to calculate the transmission coefficient is:

\[ \tau = \frac{\sum_{i=1}^{q} S_i \tau_i}{\sum_{i=1}^{q} S_i} \]

Where:

\( S_i \): Surface area of each wall element \( i \)
\( \tau_i \): Transmission coefficient of each wall element \( i \)

The final transmission loss \( TL \) is calculated using the formula:

\[ TL = -10 \log_{10}(\tau) \]

This calculation helps evaluate the overall soundproofing and acoustic insulation capabilities of a heterogeneous wall by combining the properties of individual elements, ensuring an accurate prediction of noise reduction.

And to calculate the complete Transmission Loss of materials, use AcouVApp Insul or if you want to evaluate the Critical Frequency, try AcouVApp Critical

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