GB/T 20247-2006: Acoustics -- Measurement of sound absorption in a reverberation room

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Scope

This Standard specifies a method of measuring the sound absorption coefficient of acoustical
materials used as wall or ceiling treatments, or the equivalent sound absorption area of objects,
such as furniture, persons or space absorbers, in a reverberation room. It is not intended to be
used for measuring the absorption characteristics of weakly damped resonators.
The results obtained can be used for comparison purposes and for design calculation with
respect to room acoustics and noise control.

Basic Data

Standard ID	GB/T 20247-2006 (GB/T20247-2006)
Description (Translated English)	Acoustics -- Measurement of sound absorption in a reverberation room
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	A59
Classification of International Standard	17.140
Word Count Estimation	22,291
Date of Issue	2006-05-08
Date of Implementation	2006-11-01
Quoted Standard	GB/T 3240-1982; GB/T 3241; GB/T 17247.1
Adopted Standard	ISO 354-2003, IDT
Regulation (derived from)	China Announcement of Newly Approved National Standards No. 6 of 2006 (No. 93 overall)
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 the measurement in a reverberation chamber for processing interface, such as a wall or on top of the acoustic absorption coefficient of the material, or such as furniture, people, space absorbers such as sound absorption method. This method is not suitable for measuring acoustic resonator low damping characteristics. Measurement results can be used for room acoustics and noise control data comparison and design calculations.