Industrial Fans, Blowers & Air Movement Equipment worked example
Noise Estimate with sound impact score of 3.5 score: a worked example
Suppose sound impact score falls to 3.5 score. This page works the full calculation at that level so you can see exactly which result moves and by how much. Score fan noise risk from sound impact, likelihood of exceeding the target, and weakness of current noise controls.
The inputs for this scenario
- Sound impact score: 3.5 score (the input this scenario stresses; the baseline uses 7)
- Noise occurrence score: 4 score (held at the documented default)
- Noise control weakness score: 3 score (held at the documented default)
Working through the calculation
- The calculation starts from the formula this tool documents: Noise risk score = sound impact score × 0.40 + noise occurrence score × 0.35 + noise control weakness score × 0.25.
- Noise risk score works out to 3.55 score at these inputs, and this is the headline figure for the scenario.
- Sound impact score works out to 3.5 score at these inputs.
- Noise occurrence score works out to 4 score at these inputs.
- Noise control weakness score works out to 3 score at these inputs.
How this compares with the baseline
- Against the tool's baseline example, where sound impact score sits at 7 score and the headline result is 4.95 score, this scenario comes in 28.28% below the baseline at 3.55 score.
- It blends a sound impact score, a noise occurrence score, and a noise control weakness score using fixed weights of 0.40, 0.35, and 0.25 into one risk score. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.
Results at a glance
- Noise risk score: 3.55 score (headline result)
- Sound impact score: 3.5 score
- Noise occurrence score: 4 score
- Noise control weakness score: 3 score
Run it with your numbers
- To rerun this with your own numbers, open the live Noise Estimate calculator, set sound impact score to your actual value, and adjust the remaining inputs to match your operation.
Last reviewed 2026-05-12.