GB/T 7582-2025 English PDFUS$514.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 7582-2025: Acoustics - Statistical distribution of hearing thresholds related to age and gender Status: Valid GB/T 7582: Historical versions
Basic dataStandard ID: GB/T 7582-2025 (GB/T7582-2025)Description (Translated English): Acoustics - Statistical distribution of hearing thresholds related to age and gender Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: Z32 Classification of International Standard: 13.140 Word Count Estimation: 26,212 Date of Issue: 2025-08-01 Date of Implementation: 2026-02-01 Older Standard (superseded by this standard): GB/T 7582-2004 Issuing agency(ies): State Administration for Market Regulation, Standardization Administration of China GB/T 7582-2025: Acoustics - Statistical distribution of hearing thresholds related to age and gender---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT7582-2025 ICS 13.140 CCSZ32 National Standard of the People's Republic of China Replaces GB/T 7582-2004 Statistical distribution of the relationship between acoustic hearing threshold and age and gender toageandgender (ISO 7029.2017, IDT) Released on August 1, 2025 Implementation on February 1, 2026 State Administration for Market Regulation The National Standardization Administration issued Table of ContentsPreface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Technical Requirements 2 Appendix A (Informative) Selected Values of Gaussian Distribution 6 Appendix B (Informative) Numerical Examples 7 illustrating the calculation steps Appendix C (Informative) Expected Median of Hearing Threshold Deviation 8 Appendix D (Informative) Selected values for the statistical distribution of hearing threshold deviations 9 Appendix E (Informative) Expected median thresholds at audiometric frequencies from 9000 Hz to 12500 Hz Appendix F (Informative) Sources of Descriptive Statistics of Hearing Thresholds 14 Appendix G (Informative) Discreteness of Source Data Around the Median Expected Hearing Threshold 19 Reference 20 Preface 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. This document replaces GB/T 7582-2004 "Statistical distribution of acoustic hearing thresholds in relation to age" and is consistent with GB/T 7582-2004. In addition to structural adjustments and editorial changes, the main technical changes are as follows. ---Changed the estimated precision and statistical distribution of the median hearing threshold expectation for the age range, audiometric frequencies at and below.2000 Hz The age range has been extended to 80 years (see Chapter 1 of the.2004 edition); --- Changed the calculation formula to improve the accuracy of the estimation and statistical distribution of the expected median hearing threshold (see 4.2, 4.3 and 4.4, 2004 edition, 3.2, 3.3, and 3.4). This document is equivalent to ISO 7029.2017 "Statistical distribution of acoustic hearing thresholds in relation to age and gender". The following minimal editorial changes have been made to this document. --- This document incorporates the contents of the amendment to ISO 7029.2017/Amd1.2024.The outer margins of the clauses involved are marked with Vertical double lines (‖) are marked. 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 Acoustics Standardization (SAC/TC17). This document was drafted by. The Sixth Medical Center of the General Hospital of the Chinese People's Liberation Army, Institute of Acoustics of the Chinese Academy of Sciences, China Institute of Metrology Institute of Medicine, East China Normal University, Shenzhen Longgang District Otolaryngology Hospital, the Second Affiliated Hospital of the PLA Army Medical University, Beijing University. The main drafters of this document are. Ji Fei, Liu Jing, Han Lumeng, Wu Qian, Chen Aiting, Wang Qian, Li Xiaodong, Zheng Chengshi, Cheng Xiaobin, Yang Shiming, Zhong Bo, Sang Jinqiu, Li Juanjuan, Deng Anchun, Wu Xihong, and Qiu Xiangyu. The previous versions of this document and the documents it replaces are as follows. --- First published as GB/T 7582-1987 in 1987, first revised in.2004; ---This is the second revision.introductionIt is well known that people's hearing sensitivity decreases with age, and hearing damage to high-frequency sounds develops faster than that to low-frequency sounds. Furthermore, the extent of this effect varies widely among individuals. When audiometry is performed on individuals significantly older than 18 years, the observed hearing loss may be partially age-related. When it comes to hearing loss, special attention should be paid to the impact of age. It should be pointed out that hearing loss is not necessarily caused by aging itself. There are many specific details in a person's life that are still unclear. Clearly aware of the harmful factors. This document is based on a comprehensive review of the literature data on differences between age groups of normal otological subjects as defined in this document. The data were obtained by using pure sound test with headphones. There is no evidence that data measured with band noise are unusable. The expected median and statistical distribution of hearing thresholds in this document were re-estimated using audiometric data published after the.2004 edition of this document. Therefore, this document describes the hearing sensitivity profile of the population in recent years. The high-frequency hearing thresholds given in this document are generally lower than in previous editions. The drop at 4000 Hz for males has become negligible. The source data may not have been rigorously screened for hearing abnormalities. Instrument problems may also affect the measurement data. This document provides the expected median hearing thresholds in the frequency range of 9000Hz to 12500Hz for reference. The device is designed to perform audiometry on these frequencies. Statistical distribution of the relationship between acoustic hearing threshold and age and gender1 ScopeThis document specifies the descriptive statistical information of the hearing threshold deviation values of normal otologists of various age groups under monaural headphone audiometry conditions. The document stipulates the following for people aged 18 to 80 years old, within the audiometry frequency range of 125Hz to 8000Hz. a) the expected median hearing threshold relative to the median hearing threshold of 18-year-olds; b) The expected statistical distribution above and below the median. For people over 70 years old, the median and statistical distribution of frequencies between 3000Hz and 8000Hz are for reference only. This document also provides reference for the expected median of the 22 to 80 age range and the 9000Hz to 12500Hz audiometric frequency range. Test information. The data in this document are suitable for estimating the extent of hearing loss in a population due to a specific factor. This comparison is valid for people with normal hearing who are affected by this specific factor. Noise exposure is an example of a specific factor. Some data from this document have been selected to form Database A of ISO.1999 for the application of noise exposure in audiometry. Note 1.GB/T 14366-2017 is equivalent to ISO.1999.2013, and Database A is based on the previous version of ISO 7029. The data in this document are also suitable for use in assessing an individual's hearing ability by comparing it with the normal distribution of hearing thresholds for the same age group. Accurately assess which of an individual's hearing loss is due to the cumulative adverse effects on hearing that occur with aging, and which is caused by other factors such as noise. caused by. The hearing threshold deviations defined in this document are consistent with those in other standards (ISO 389-1, ISO 389-2, ISO 389-5, ISO 389-8, ISO 8253- 1.The hearing threshold level defined in ISO 8253-2 and IEC 60645-1) represents the hearing threshold of an individual or an individual ear relative to the following data. Relationship. --- the expected median hearing threshold of an 18-year-old normal population of the same sex; or --- Reference zero grade specified in various parts of ISO 389. If the baseline level zero represents the median of 18-year-olds, then these two values are the same. Note 2.For some reasons, these two values are not always the same. One reason is that the reference zero level is determined based on the hearing threshold level of people over 18 years old. The average hearing sensitivity of the general population, including those over 25 years old and even over 30 years old, is slightly worse. Note 3.ISO 28961 specifies the expected statistical distribution of hearing thresholds for normal otological subjects aged 18 to 25 years under binaural free-field listening conditions, expressed in decibels. It can be calculated not only at conventional audiometric frequencies, but also at other 1/3 octave frequencies within the 20Hz~16000Hz frequency range.2 Normative referencesThis document has no normative references.3 Terms and DefinitionsThe following terms and definitions apply to this document. The URLs for terminology databases used for standardization maintained by ISO and IEC are as follows. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 7582-2025_English be delivered?Answer: Upon your order, we will start to translate GB/T 7582-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 7582-2025_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 7582-2025_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+ countriesQuestion 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.Question 5: Should I purchase the latest version GB/T 7582-2025?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 7582-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
