Road Noise Distance Calculator

Calculate how road noise decreases with distance using the inverse square law

Input Parameters

Calculation Results

Noise Level at Target Distance

-- dB --

Noise Reduction

-- dB --

Distance Ratio

-- --

Calculation Formula

Noise Level decreases according to the inverse square law:

L₂ = L₁ × (d₁/d₂)²

Where:
L₁ = Initial Noise Level (dB)
L₂ = Noise Level at Target Distance (dB)
d₁ = Reference Distance (m)
d₂ = Target Distance (m)

Road Noise Distance Calculator Usage Guide

Learn how to use the calculator to estimate road noise reduction with distance

How to Use This Calculator

  1. Enter the initial noise level at your reference distance (e.g., noise level measured at 10 meters from a road)
  2. Set the reference distance where you measured the initial noise level
  3. Enter the target distance where you want to calculate the noise level
  4. Click "Calculate" to see the estimated noise level at the target distance

Understanding Road Noise Reduction

Road noise decreases with distance following the inverse square law. This means that if you double the distance from the source, the noise level will decrease by approximately 6 decibels (dB).

Practical Applications

  • Assessing noise impact on residential areas near roads
  • Planning noise barriers or other mitigation measures
  • Environmental impact studies
  • Urban planning and land use assessment

Note: This calculator provides a simplified model of noise propagation. Actual noise levels may be affected by factors such as terrain, obstacles, weather conditions, and the specific type of road traffic.