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GB/T 45305.4-2025 English PDF

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GB/T 45305.4-2025: Acoustics - Laboratory measurement of sound insulation of building elements - Part 4: Measurement procedures and requirements
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Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 45305.4-2025	359	Add to Cart	4 days	Acoustics - Laboratory measurement of sound insulation of building elements - Part 4: Measurement procedures and requirements	Valid

Similar standards

GB/T 31004.1 GB/Z 27764 GB/T 25078.1 GB/T 16405 GB/T 20243.2

Basic data

Standard ID: GB/T 45305.4-2025 (GB/T45305.4-2025)
Description (Translated English): Acoustics - Laboratory measurement of sound insulation of building elements - Part 4: Measurement procedures and requirements
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A59;P31
Classification of International Standard: 91.120.20
Word Count Estimation: 18,198
Date of Issue: 2025-02-28
Date of Implementation: 2025-06-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45305.4-2025: Acoustics - Laboratory measurement of sound insulation of building elements - Part 4: Measurement procedures and requirements

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
GB/T 45305.4-2025 English version. Acoustics - Laboratory measurement of sound insulation of building elements - Part 4.Measurement procedures and requirements ICS 91.120.20 CCSA59;P31 National Standard of the People's Republic of China Acoustics Laboratory measurements of sound insulation of building components Part 4.Measurement procedures and requirements Part 4.Measurement procedures and requirements (ISO 10140-4.2021,MOD) Released on 2025-02-28 2025-06-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Measurement procedures and requirements 2 4.1 Frequency range 2 4.2 Sound pressure level measurement 2 4.2.1 Overview 2 4.2.2 Minimum spacing between microphone locations 2 4.2.3 Average time 3 4.2.4 Average sound pressure level 3 4.3 Background noise correction 3 4.4 Airborne sound insulation measurement 4.4.1 General 4 4.4.2 Measurement with fixed microphone position 4 4.4.3 Continuously moving microphone measurement 4 4.5 Impact sound insulation measurement 4 4.5.1 General 4 4.5.2 Fixed microphone position measurement 5 4.5.3 Continuously moving microphone measurement 5 4.6 Reverberation time and sound absorption measurement 5 4.6.1 General 5 4.6.2 Reverberation time measurement 5 4.6.3 Sound absorption measurement 5 4.7 Structural Reverberation Time Measurement 6 4.8 Determination of radiated sound power using component surface vibration velocity 6 5 Sound insulation performance measurement 7 5.1 General requirements 7 5.2 General method for determining airborne sound insulation performance 7 5.2.1 General 7 5.2.2 Fixed microphone position for multiple loudspeakers operating simultaneously or a mobile loudspeaker 7 5.2.3 Fixed microphone position versus single loudspeaker operating at multiple positions 7 5.2.4 Continuously moving microphones corresponding to multiple loudspeakers operating simultaneously or a moving loudspeaker 7 5.2.5 Continuously moving microphone versus single loudspeaker operating at multiple positions 7 5.3 General method for determining impact sound insulation performance 8 5.3.1 General 8 5.3.2 Fixed microphone position 8 5.3.3 Continuously moving microphone 8 Appendix A (Informative) Additional low frequency measurements 9 A.1 Overview 9 A.2 Minimum distance 9 A.3 Sound field sampling 9 A.4 Speaker Position 9 A.5 Average time 9 A.6 Reverberation time 9 Reference 10

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting is required. This document is part 4 of GB/T 45305 "Laboratory measurement of sound insulation of acoustic building elements". GB/T 45305 has been published The following parts. --- Part 4.Measurement procedures and requirements. This document modifies ISO 10140-4.2021 "Acoustic building elements - Laboratory measurements of sound insulation - Part 4.Measurement procedures and Require". The technical differences between this document and ISO 10140-4.2021 and their reasons are as follows. --- ISO 18233 (see 4.6.2.1) was replaced by the normative reference GB/T 25079 to adapt to my country's technical conditions; --- ISO 3382-2 (see 4.6.1 and 4.6.2.1) has been replaced by the normative reference GB/T 36075.2 to adapt to my country's technology condition. The following editorial changes were made to this document. --- Added the scope of application of this document in the "Scope" chapter to clarify the scope of use and comply with my country's standards drafting rules; --- Added the explanation of the reference sound pressure p0 in formula (1) (see 4.2.4.1); --- GB/T 31004.1 replaces the informative reference ISO 15186-1 (see Note 4.8); --- Corrected the typographical error, and changed the following in 5.1."Mobile or fixed loudspeakers may be used for measurement" and "It is advisable to use loudspeakers in the same source room and receiving room" "Measurement is performed when" was moved to 5.2.1, and the content in 5.3.1 that was repeated with 5.1 was deleted. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the Chinese Academy of Sciences. This document is under the jurisdiction of the National Technical Committee on Acoustic Standardization (SAC/TC17). This document was drafted by. Institute of Acoustics, Chinese Academy of Sciences, China Academy of Building Research Co., Ltd., Hangzhou Aihua Intelligent Technology Co., Ltd. Company, Tongji University, Guangzhou Qijing Environmental Protection Technology Co., Ltd., Shenyang Ziweiheng Testing Equipment Co., Ltd., Beijing Kaibo Wanqian Technology Co., Ltd. Beijing Ruiante Acoustic Decoration Engineering Co., Ltd., Southeast University, Tsinghua University, Jianke Environmental Energy Technology Co., Ltd., Hangzhou Elite Digital Technology Co., Ltd., Shanghai Xinhuajing Environmental Protection Engineering Co., Ltd., Beijing University of Technology, and Chongqing Electronic Engineering Vocational College. The main drafters of this document are. Yin Xia, Tan Hua, Cheng Xiaobin, Lv Yadong, Xiong Wenbo, Jiang Guorong, Zhou Jinli, Chen Xianhua, Zhang Fenghua, Ruan Lixin, Fu Xiuzhang, Yan Xiang, Yan Guojun, Ren Junjun, Wang Bing, Xu Xin, Sun Yan, Liu Danxiao, Lin Jie, Mao Wei, and Yang Yongjie.

Introduction

GB/T 45305 "Laboratory measurement of sound insulation of acoustic building components" involves laboratory measurement methods for sound insulation of building components, aiming to standardize Improve the layout of the laboratory for component sound insulation measurement to ensure the consistency of the measurement and simplify the test piece installation conditions and the need for additional Revision work in time. GB/T 45305 is planned to consist of 5 parts. --- Part 1.Application rules for specific products. Corresponding to ISO 10140-1.The purpose is to give laboratory measurements of specific components and products. The appropriate test procedures for the sound insulation of products include specific requirements for specimen preparation, installation, operation and test conditions. --- Part 2.Measurement of airborne sound insulation. Corresponding to ISO 10140-2.The purpose is to provide laboratory measurement of airborne sound insulation of building components. General procedure for measuring sound. --- Part 3.Measurement of impact sound insulation. Corresponding to ISO 10140-3.The purpose is to provide laboratory measurement of impact sound insulation of floor components. General procedure for measuring sound. --- Part 4.Measurement procedures and requirements. Corresponding to ISO 10140-4.The purpose is to provide laboratory measurements of airborne sound insulation of building components. Basic measurement techniques and test procedures for acoustic and impact sound insulation. --- Part 5.Requirements for test facilities and equipment. Corresponding to ISO 10140-5.The purpose is to provide design, construction and certification of sound insulation Detailed information required for measuring laboratory test facilities, additional equipment and measuring instrumentation. Acoustics Laboratory measurements of sound insulation of building components Part 4.Measurement procedures and requirements

1 Scope

This document specifies the general procedures, technical requirements and test procedures for measuring the sound insulation performance of building elements in laboratory test facilities. This document is applicable to laboratory measurements of airborne sound insulation and impact sound insulation of building components, and to the experimental measurements of sound insulation of other components. For reference in laboratory measurements.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 25079 Acoustics - Application of new measurement methods in architectural acoustics and room acoustics - MLS and SS methods (GB/T 25079- 2010,ISO 18233.2006,IDT) GB/T 36075.2 Acoustics Measurement of indoor acoustic parameters Part 2.Reverberation time of ordinary rooms (GB/T 36075.2- 2018,ISO 3382-2.2008,IDT) ISO 10140-1.2021 Acoustics - Laboratory measurement of sound insulation of building elements - Part 1.Rules for application to specific products (Acoustics-Laboratorymeasurementofsoundinsulationofbuildingelements-Part 1.Application rules for specific products) ISO 10140-2 Acoustics - Laboratory measurements of sound insulation of building elements - Part 2.Measurement of airborne sound insulation Laboratorymeasurementofsoundinsulationofbuildingelements-Part 2.Laboratorymeasurements ofairbornesoundinsulation) ISO 10140-3 Acoustics - Laboratory measurements of sound insulation of building elements - Part 3.Measurement of impact sound insulation Laboratorymeasurementofsoundinsulationofbuildingelements-Part 3.Laboratorymeasurements ofimpactsoundinsulation) ISO 10140-5.2021 Acoustics - Laboratory measurements of sound insulation of building elements - Part 5.Requirements for test facilities and equipment (Acoustics-Laboratorymeasurementofsoundinsulationofbuildingelements-Part 5.Requirements fortestfacilitiesandequipment) ISO 10848-1.2017 Acoustics - Laboratory tests for lateral transmission of airborne sound, impact sound and noise from building services equipment between adjacent rooms Acoustics-Laboratoryandfieldmeasurementofflanking transmissionforairborne,impactandbuildingserviceequipmentsoundbetweenadjoiningrooms- Part 1.Frame document)

3 Terms and definitions

The following terms and definitions apply to this document. The terminology databases used for standardization maintained by ISO and IEC are located at. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 45305.4-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 45305.4-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 45305.4-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 45305.4-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.