The airborne sound power is the major descriptor for the total amount of the sound radiated from a source. In contrary to the acoustic field quantities like sound pressure, it is independent of the acoustic environment and of the distance to the source. The acoustic properties of technical products e.g. a sound emission or a sound insulation, are therefore described in terms of sound power or quantities derived thereof.

The experimental determination of sound power is currently based on the measurement of field quantities like sound pressure. Acoustic power can be calculated from the field quantities under restricting assumptions only. The current situation is thus described by a lack of traceability and an absence of transparent uncertainty budgets for the quantity sound power. To improve the situation, the JRP aims to establish traceability for the measurand sound power.


The major goals and objectives of the project are given in the Opens external link in new windowPublishable Summary.