How to use this tool
Check the units, enter your values, and run the tool. Results follow the assumptions and method below.
Calculation method
Target sound level
level-20*log10(r2/r1)Distance Attenuation Calculator
Point source in a free field; neglects absorption and reflections.
Point source in a free field; neglects absorption and reflections.
Result
Enter your values and run the tool to see your result.