Abstract:
Through experiments on the proposed national standard(GB/T) Field Measurements of Sound Insulation in Buildings and of Building Elements,it is concluded that there are some differences in averaging time,frequency range of measurements,correction for background noise and expression of results between the new standard and the old version.It is feasible to make the national standards(GB),Acoustics Measurement of Sound Insulation in Buildings and of Building Elements,Part4: Field Measurements of Airborne Sound Insulation between Rooms,and Part 7: Field Measurements of Impact Sound Insulation of Floors,identical(IDT) to ISO.