Isolation Room Design Calculator

Calculate outdoor sound propagation from a noise source to a receiver. Models geometric spreading, ground effects, and atmospheric absorption (ISO 9613).

Inputs

Source sound power (dB)

Distance to receiver (m)

Frequency (Hz)

Source type (0=point, 1=line)

Ground type (0=hard, 1=mixed, 2=soft)

Temperature (°C)

Relative humidity (%)

Tab to move between fields

Results

SPL at receiver (dB)

Geometric spreading (dB)51

Ground effect (dB)-3

Atmospheric absorption (dB)0

Total path loss (dB)48

Absorption coeff (dB/m)0

How to Use This Calculator

Enter Source sound power (dB), Distance to receiver (m), and Frequency (Hz).
Set Source type (0=point, 1=line), Ground type (0=hard, 1=mixed, 2=soft), and Temperature (°C).
Adjust Relative humidity (%) as needed.
Review the SPL at receiver (dB) result.
Use Geometric spreading (dB) and Ground effect (dB) to inform your decision.

Ad Placeholder