Acoustic, Noise, Vibration & NVH Products worked example

Decibel Reduction Risk Estimate with db target miss severity of 20 score: a worked example

What does the result look like when db target miss severity reaches 20 score? The full calculation is worked below with real intermediate numbers. an acoustics engineer or estimator needs to flag noise-reduction jobs that need deeper analysis or test validation

The inputs for this scenario

  • dB target miss severity: 20 score (raised for this scenario; the documented default is 8)
  • Miss likelihood: 5 score (unchanged)
  • Detection difficulty: 5 score (unchanged)

Working through the calculation

  • Applying the documented formula (dB reduction risk score = severity × 0.40 + miss likelihood × 0.35 + detection difficulty × 0.25) to the inputs above produces each figure below.
  • At this operating point the engine returns 11 dB miss risk score for db reduction risk score, the number this scenario is built around.
  • At this operating point the engine returns 20 score for target miss severity.
  • At this operating point the engine returns 5 score for miss likelihood.
  • At this operating point the engine returns 5 score for detection difficulty.

How this compares with the baseline

  • Against the tool's baseline example, where db target miss severity sits at 8 score and the headline result is 6.2 dB miss risk score, this scenario comes in 77.42% above the baseline at 11 dB miss risk score.
  • A figure at this level is achievable when db target miss severity is genuinely sustained, not just peaked for a shift. It is a relative prioritization tool, not an acoustic prediction — the inputs are subjective ratings, so two engineers can score the same panel differently without a calibrated rating rubric.

Results at a glance

  • dB reduction risk score: 11 dB miss risk score (headline result)
  • Target miss severity: 20 score
  • Miss likelihood: 5 score
  • Detection difficulty: 5 score

Run it with your numbers

  • Every input above is editable in the live Decibel Reduction Risk Estimate calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.