<p>This document</p>
<p>a) defines single-number quantities for airborne sound insulation in buildings and of building elements such as walls, floors, doors, and windows,</p>
<p>b) takes into consideration the different sound level spectra of various noise sources such as noise sources inside a building and traffic outside a building, and</p>
<p>c) gives rules for determining these quantities from the results of measurements carried out in one-third-octave or octave bands for example in accordance with ISO 10140-2 and ISO 16283-1.</p>
<p>The single-number quantities in accordance with this document are intended for rating airborne sound insulation and for simplifying the formulation of acoustical requirements in building codes. An additional single-number evaluation in steps of 0,1 dB is indicated for the expression of uncertainty (except for spectrum adaptation terms). The required numerical values of the single-number quantities are specified according to varying needs. The single-number quantities are based on results of measurements in one-third-octave bands or octave bands.</p>
<p>For laboratory measurements made in accordance with ISO 10140-2, single-number quantities are calculated using one-third-octave bands only.</p>
<p>The rating of results of measurements carried out over an enlarged frequency range is dealt with in Annex B.</p>
Registration number (WIID)
77435
Scope
<p>This document</p>
<p>a) defines single-number quantities for airborne sound insulation in buildings and of building elements such as walls, floors, doors, and windows,</p>
<p>b) takes into consideration the different sound level spectra of various noise sources such as noise sources inside a building and traffic outside a building, and</p>
<p>c) gives rules for determining these quantities from the results of measurements carried out in one-third-octave or octave bands for example in accordance with ISO 10140-2 and ISO 16283-1.</p>
<p>The single-number quantities in accordance with this document are intended for rating airborne sound insulation and for simplifying the formulation of acoustical requirements in building codes. An additional single-number evaluation in steps of 0,1 dB is indicated for the expression of uncertainty (except for spectrum adaptation terms). The required numerical values of the single-number quantities are specified according to varying needs. The single-number quantities are based on results of measurements in one-third-octave bands or octave bands.</p>
<p>For laboratory measurements made in accordance with ISO 10140-2, single-number quantities are calculated using one-third-octave bands only.</p>
<p>The rating of results of measurements carried out over an enlarged frequency range is dealt with in Annex B.</p>
