专家解读视频
Specifies requirements for audiometric equipment designed for use in pure tone audiometry in the frequency range from 8,000 Hz to 16,000 Hz. Will ensure that extended high-frequency audiometry performed on a given human ear with different types of equipment that comply with this standard will give substantially similar results.
SS EN 60645-4 Ed. 1 (1996) - Identical
UNE EN 60645-4:1997 - Identical
NF EN 60645-4:1995 - Identical
I.S. EN 60645-4:1996 - Identical
DIN EN 60645-4 (1995-06) - Identical
BS EN 60645-4:1995 - Identical
SN EN 60645-4:1995 - Identical
