Acoustics. Measurement of sound insulation in buildings and of building elements using sound intensity - Laboratory measurements

Acoustics. Measurement of sound insulation in buildings and of building elements using sound intensity - Laboratory measurements

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1   Scope

This part of ISO 15186 specifies a sound intensity method to determine the sound reduction index and the element-normalized level difference of building elements. The method can be used as an alternative to ISO 140‑3 and ISO 140‑10 respectively. One important use is when the traditional ISO 140‑3 method fails because of high flanking transmission.
The reproducibility of this intensity method is estimated to be equal to or better than that of ISO 140‑3.

NOTE Some information about the accuracy with which this part of ISO 15186 can reproduce the sound reduction index measured according to ISO 140‑3 is given in annex A.