ISO-389-9 › 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
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1ST EDITION
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CURRENT
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ISO 389-9:2009 specifies test conditions for determining the hearing thresholds of subjects for the purpose of establishing standardized values for reference hearing threshold levels.
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Document Number
ISO 389-9:2009
Revision Level
1ST EDITION
Status
Current
Publication Date
May 15, 2009
Committee Number
ISO/TC 43