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

Foreword

GB/T 31004 Acoustics - Measurement of sound insulation in buildings and of

building elements using sound intensity consists of the following parts.

- Part 1. Laboratory measurements;

- Part 2. Site measurements;

- Part 3. Laboratory measurements at low frequencies.

This Part is the first part of GB/T 31004.

This Part was drafted in accordance with the rules given in GB/T 1.1-2009.

This Part uses translation method to make it identical with ISO 15186-1.2000

Acoustics - Measurement of sound insulation in buildings and of building

elements using sound intensity - Part 1. Laboratory measurements.

The Chinese documents which have consistency with the international

normative reference in this Part are as follows.

- GB/T 15173-2010 Electroacoustics - Sound calibrators (IEC 60942.2003,

IDT);

- GB/T 16404-1996 Acoustics - Determination of sound power levels of

noise sources using sound intensity - Part 1. Measurement at discrete points

(eqv ISO 9614-1.1993);

- GB/T 17561-1998 Instruments for the measurement of sound intensity -

Measurement with pairs of pressure sensing microphones (IEC 61043.1993,

IDT).

This Part was proposed by Chinese Academy of Sciences.

This Part shall be under the jurisdiction of National Technical Committee on

Acoustics of Standardization Administration of China.

The drafting organizations of this Part. Institute of Acoustics, Chinese Academy

of Sciences, South China University of Technology, Hefei University of

Technology, Tongji University, China Building Research Institute, China First

Automobile Technology Co., Ltd., Beijing Institute of Labor Protection Science,

Wuxi Jixing Automotive Acoustic Components Science Co., Ltd., Yunnan

Design Institute.

Acoustics - Measurement of sound insulation in

buildings and of building elements using sound

intensity - Part 1. Laboratory measurements

1 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

2 Normative references

The following referenced documents are indispensable for the application of

this document. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any

amendments) applies.

GB/T 19889.1-2005 Acoustics - Stationary audible warning devices used

outdoors - Part 1. Field measurements for determination of sound emission

quantities

GB/T 19889.3-2005 Acoustics - Measurement of sound insulation in

buildings and of building elements - Part 3. Laboratory measurements of

airborne sound insulation of building elements - Part 3. Laboratory

measurements of airborne sound insulation of building elements

GB/T 19889.10-2006 Acoustics - Measurement of sound insulation in

buildings and of building elements - Part 10. Laboratory measurements of

airborne sound insulation of small building elements

ISO 9614-1.1993 Acoustics - Determination of sound power levels of noise

sources using sound intensity - Part 1. Measurements at discrete points

Bibliography

[1] GB/T 6881.1-2002, Acoustics - Determination of sound power levels of

noise sources using sound pressure - Precision methods for reverberation

rooms.

[2] GB/T 31004.3-2014, Acoustics - Measurement of sound insulation in

buildings and of building elements using sound intensity - Part 3. Laboratory

measurements at low frequencies.

[3] GB/T 50121-2005, Rating standard of sound insulation in buildings.

[4] ISO 717-1, Acoustics - Rating of sound insulation in buildings and of

building elements - Part 1. Airborne sound insulation.

[5] ISO 3741, Acoustics - Determination of sound power levels of noise

sources using sound pressure - Precision methods for reverberation rooms.

[6] ISO 9614-2, Acoustics - Determination of sound power levels of noise

sources using sound intensity - Measurement by scanning.

[7] ISO 15186-3, Acoustics - Measurement of sound insulation in buildings

and of building elements using sound intensity - Part 3. Laboratory

measurements at low frequencies.

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