Sign In |Help & Support
ALL SECTORS
  • ALL SECTORS
  • GB(National Standard)
  • CB(Shipping)
  • CECS(Engineering Construction)
  • CJ(Urban Construction)
  • CY(News and Publication)
  • DB(Provincial Standard)
  • DL(Electricity & Power)
  • DZ(Geology & Mineralogy)
  • FZ(Spinning & Textile)
  • GA(Public Security)
  • HB(Aviation)
  • HG(Chemical Industry)
  • HJ(Environmental Protection)
  • JB(Machinery)
  • JC(Building Materials)
  • JG(Building & Construction)
  • JJ(Metering)
  • JT(Highway & Transportation)
  • LY(Forestry)
  • MT(Coal)
  • NB(Energy)
  • NY(Agriculture)
  • QB(Light Industry)
  • QC(Automobile & Vehicle)
  • QJ(Aerospace)
  • SH(Petrochemical)
  • SJ(Electronics)
  • SL(Water Resources)
  • SN(Commodity Inspection)
  • SY(Oil & Gas)
  • TB(Railway & Train)
  • YB(Ferrous Metallurgy)
  • YC(Tobacco)
  • YD(Telecommunication)
  • YY(Medical Device)
Database: 365,228(8 Aug 2026)
free-field listening conditions free-field conditions hearing thresholds normal hearing levels satistical distribution one-step crepe paper plastic pencil box scopethis standard liquefied gas transportation vessels
GB/T 44804-2024 in English

GB/T 44804-2024 in English

VALID

Acoustics—Satistical distribution of hearing thresholds of otologically normal persons in the age range from 18 years to 25 years under free-field listening conditions

  • Issued on:2024-10-26
  • Implemented on:2025-05-01
  • File Format:PDF
  • Delivery:Via email within 5 business days
Price(USD): $310.00
$301.00
Standard No: GB/T 44804-2024
Document status: VALID
Title in English: Acoustics—Satistical distribution of hearing thresholds of otologically normal persons in the age range from 18 years to 25 years under free-field listening conditions
Title in Chinese: 声学 自由场条件下18岁至25岁耳科正常人听力阈值的统计分布
Language: English
File Format: Electronic (PDF)
Delivery: Via email within 5 business days
Issued on: 2024-10-26
Implemented on: 2025-05-01
ICS Classification: 13.140-Noise with respect to human beings
Chinese Classification: C05-Medical science
Professional Classification: GB-National Standard
Related Keywords: free-field listening conditions
free-field conditions
hearing thresholds
normal hearing levels
satistical distribution

《GB/T 44804-2024声学 自由场条件下18岁至25岁耳科正常人听力阈值的统计分布》由TC17(全国声学标准化技术委员会)归口,主管部门为中国科学院。


Introduction


The National Standardization Administration of China has published the standard "Statistical Distribution of Hearing Thresholds for Normal Ears in Free-field Conditions for Individuals Aged 18 to 25" with the designation GB/T 44804-2024. This standard comes into effect on May 1, 2025 and provides a comprehensive statistical analysis of hearing thresholds among individuals within the specified age range under free-field conditions. It aims to establish reference values for assessing auditory health and identifying potential deviations from normal hearing levels in this demographic group.


The document outlines methodologies for measuring hearing thresholds, including frequency-specific criteria that are critical for evaluating auditory function in a controlled environment. This standard serves as a benchmark for audiological studies, clinical assessments, and research aimed at understanding the variability of hearing among young adults within China.


*** Please note: This description may not be accurate, please refer to the official documentation.

Sample only — not a preview of GB/T 44804-2024
Page: 1 / 0
100%

Loading PDF document...

Error loading PDF. Please make sure the file is valid and try again.