ChinaAutoRegs｜GB/T 20247-2006 英文版/English/翻译/道声学 混响室吸声测量
Acoustics – Measurement of Sound Absorption in a Reverberation Room

1 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.

2 NORMATIVE REFERENCES

The following standards contain provisions which through reference in this text, constitute provisions of this Standard. For dated references, subsequent amendments (corrigenda excluded) to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the Standards indicated below. For undated references, the latest edition of the applicable Standards referred to apply.
GB/T 3240-1982 Preferred Frequencies for the Acoustical Measurement
GB/T 3241 Octave-band and Fractional-octave-band Filters (GB/T 3241-1998, eqv IEC 61260:1995)
GB/T 17247.1 Acoustics–Attenuation of Sound during Propagation Outdoors–Part 1: Calculation of the Absorption of Sound by the Atmosphere (GB/T 17247. 1-2000, eqv ISO 9613-1:1993)

3 TERMS AND DEFINITIONS

For the purposes of this Standard, the following terms and definitions apply.

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