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Norm
ISO 389-9:2009
Ausgabedatum: 2009 05 07
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 specifies test conditions for determining the hearing thresholds of subjects for the purpose of establishing standardized values for reference hearing thre...
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Herausgeber:
International Organization for Standardization
Format:
Digital | 9 Seiten
Sprache:
Englisch
ICS
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.
ISO 389-9:2009
2009 05 07
Acoustics — Reference zero for the calibration of audiometric equipment — Part 9: Preferred test con...
Norm
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