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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
SKU: iso_035251_117177
Published by ISO
Publication Year 2009
1 Edition
9 pages
Product Details
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.