Name: UNI ISO 28961 : 2012
Brand: UNI

ACOUSTICS - STATISTICAL DISTRIBUTION OF HEARING THRESHOLDS OF OTOLOGICALLY NORMAL PERSONS IN THE AGE RANGE FROM 18 YEARS TO 25 YEARS UNDER FREE-FIELD LISTENING CONDITIONS

Published date

07-12-2012

Publisher

Ente Nazionale Italiano di Unificazione (UNI)

Foreword
Introduction
1 Scope
2 Normative references
3 Calculation of percentiles of hearing threshold
  distribution
Annex A (informative) - Numerical examples to illustrate
        the procedure
Annex B (informative) - Selected values of the
        statistical distribution of hearing thresholds
        of otologically normal persons in the age range
        18 years to 25 years inclusive
Annex C (informative) - Selected values of z[x]
Annex D (informative) - Notes on the derivation
        of the statistical distribution of the
        normal hearing thresholds
Bibliography

This Standard provides descriptive statistics, percentiles, of the hearing threshold distribution whose mean is the reference threshold value specified in ISO 226 and ISO 389-7.

Committee	ACUSTICA
DocumentType	Standard
PublisherName	Ente Nazionale Italiano di Unificazione (UNI)
Status	Current

Standards	Relationship
ISO 28961:2012	Identical

ISO 389-7:2005	Acoustics Reference zero for the calibration of audiometric equipment Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
ISO 266:1997	Acoustics — Preferred frequencies
ISO 226:2003	Acoustics — Normal equal-loudness-level contours
ISO 7779:2010	Acoustics Measurement of airborne noise emitted by information technology and telecommunications equipment