,Acoustical Society of America" />

国产精品久久久在线观看_亚洲免费观看视频网站_国产盗摄视频一区二区三区_久久久国产一级 - 日本在线观看一区

歡迎來到寰標網! 客服QQ:772084082 加入會員
當前位置: 首頁 > 標準詳情頁

ANSI/ASA S3.44 PART 1 : 2016現行

Acoustics – Estimation of Noise-induced Hearing Loss – Part 1: Method for Calculating Expected Noise-induced Permanent Threshold Shift (a modified nationally adopted international standard)

出版:Acoustical Society of America

獲取原文 如何獲取原文?問客服 獲取原文,即可享受本標準狀態變更提醒服務!

專家解讀視頻

基本信息
標準編號: ANSI/ASA S3.44 PART 1 : 2016
標準類別:Standard
出版單位:Acoustical Society of America
標準頁數:0
標準簡介

This American National Standard specifies a method for calculating the expected noise‐induced permanent threshold shift in the hearing threshold levels of adult populations due to various levels and durations of noise exposure; it provides the basis for calculating hearing disability according to various formulae when the hearing threshold levels at commonly measured audiometric frequencies, or combinations of such frequencies, exceed a certain value.

本標準替代的舊標準

ANSI S3.44 : 2016

等同采用的國際標準

ISO 1999 : 2013(R2018) - Identical