
Acoustics; Threshold Of Hearing By Air Conduction As A Function Of Age And Sex Otologically Normal Persons
出版:Swiss Standards

专家解读视频
Specifies, for the range of audiometric frequencies from 125 to 8000 Hz and for groups of otologically normal persons of a given age within the age limits of 18 to 70 years inclusive.
DIN EN 27029 : 1992 - Identical
DIN EN 27029 : 1992 - Identical
DIN EN 27029 (1992-03) - Identical
ISO 7029:2000 - Identical