GB/T 31004.1-2014: Acoustics -- Measurement of sound insulation in buildings and of building elements using sound intensity -- Part 1: Laboratory measurements

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Scope

This Part of GB/T 31004 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 GB/T 19889.3 and GB/T
19889.10 respectively. One important use is when the traditional GB/T 19889.3
fails because of high flanking transmission.
The reproducibility of this intensity method is estimated to be equal to or better
than that of GB/T 19889.3.
NOTE Some information about the accuracy with which this Part can reproduce the sound
reduction index measured according to GB/T 19889.3 is given in Annex A.

Basic Data

Standard ID	GB/T 31004.1-2014 (GB/T31004.1-2014)
Description (Translated English)	Acoustics -- Measurement of sound insulation in buildings and of building elements using sound intensity -- Part 1: Laboratory measurements
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	A59
Classification of International Standard	17.140
Word Count Estimation	14,155
Date of Issue	9/3/2014
Date of Implementation	2/1/2015
Quoted Standard	GB/T 19889.1-2005; GB/T 19889.3-2005; GB/T 19889.10-2006; ISO 9614-1-1993; IEC 60942; IEC 61043
Adopted Standard	ISO 15186-1-2000, IDT
Regulation (derived from)	People's Republic of China Announcement of Newly Approved National Standards No. 21 of 2014
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This Standard specifies a sound insulation of building elements and standardized level difference method for the determination of sound intensity. This Standard can be used as GB/T 19889. 3 and GB/T 19889. 10 alternative methods. Especially when high late