For Member States that have no national computation methods or Member States that wish to change computation method, the following methods are recommended:
For INDUSTRIAL NOISE: ISO 9613-2: ‘Acoustics ? Abatement of sound propagation outdoors, Part 2: General method of calculation’.
Suitable noise-emission data (input data) for this method can be obtained from measurements carried out in accordance with one of the following methods: ? ISO 8297: 1994 ‘Acoustics ? Determination of sound power levels of multisource industrial plants for evaluation of sound pressure levels in the environment ? Engineering method’,
