ISO 11819-4:2013 specifies a modified version of the statistical pass-by (SPB) method that uses a microphone mounted on a backing board instead of a microphone in normal, free-field conditions. It is applicable to measurements taken in an urban, built-up, environment or in the presence of safety barriers, noise barriers, embankments or road cuttings.
| CSA Group | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Number | ISO/PAS 11819-4:2013 |
| Product Name | Acoustics - Method for measuring the influence of road surfaces on traffic noise - Part 4: SPB method using backing board |