BS 2497-2:1969被替代
Specification for a reference zero for the calibration of pure-tone audiometers. Data for certain earphones used in commercial practice
出版：British Standards Institution
專家解讀視頻
基本信息
標準編號： BS 2497-2:1969
發布時間：1969/2/17 0:00:00
標準類別：Standard
出版單位：British Standards Institution
標準頁數：0
標準簡介
Specifies value of sound pressure level corresponding to audiometric zero for monaural earphone listening to pure tones of certain stated frequencies.
標準備注
? British Standards Institution 2013
Amendment notes:
AMD 705
替代本標準的新標準
