LST EN ISO 389-9:2009
Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels (ISO 389-9:2009)

Standard No.

LST EN ISO 389-9:2009

Release Date

2009

Published By

Lithuanian Standards Office

Latest

LST EN ISO 389-9:2009

LST EN ISO 389-9:2009 history

• 2009 LST EN ISO 389-9:2009 Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels (ISO 389-9:2009)