On the reasons of the revision of ISO 16283-3: first results of measurement campaign on loudspeakers

The facade sound insulation measurements method is standardized in ISO 16283-3, which is being revised. The reasons for the revision are multiple. First, the dimensions and volumes included in the standard could not be sufficient to consider some higher volumes like openplan offices and classrooms. Second, the instructions for bigger façades are not sufficiently clear in particular situations. Therefore, an annex like the one in the first and second parts of the standard is required. Third, it was argued that the preferred method to estimate the global sound insulation of a façade would be the global loudspeaker instead of the actual traffic noise (road, railway or aircraft). Fourth, the use and qualification of the directional or omnidirectional sound source were questioned. Fifth, the right positioning of the outside loudspeaker will be analyzed. This paper presents the first results of the experimental measurement campaign on the qualification of the sound sources for measuring the global façade sound insulation.