Acoustics. Reference zero for the calibration of audiometric equipment Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

08-06-2004

Publisher

British Standards Institution

Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Specifications
Annex A (informative) Notes on the derivation of the
                      reference equivalent threshold
                      sound pressure levels for the
                      circumaural audiometric earphone
                      HDA 200
Annex B (informative) Sound attenuation of the earphone
                      HDA 200
Annex C (informative) Correction figures for free-field
                      equivalent output of the circumaural
                      earphone HDA 200
Bibliography

Describes reference equivalent threshold sound pressure levels (RETSPLs) for pure tones in the frequency range from 125 Hz to 8 kHz. Applicable to the calibration of air conduction audiometers equipped with a particular model of circumaural earphones (SENNHEISER HDA 200).

This part of ISO389 specifies reference equivalent threshold sound pressure levels (RETSPLs) for pure tones in the frequency range from 125Hz to 8kHz, applicable to the calibration of air conduction audiometers equipped with a particular model of circumaural earphones (SENNHEISER HDA 200).

NOTE Some notes and references on the derivation and the test conditions used to determine the recommended reference levels are given in AnnexA and the Bibliography.

The sound attenuation of the earphone is given in AnnexB. For speech audiometers of typesA-E and B-E (see IEC60645-2), the correction figures of the earphone for a free-field equivalent output are given in AnnexC.

Committee	EH/1/1
DevelopmentNote	Supersedes 01/565000 DC. (06/2004)
DocumentType	Standard
Pages	16
PublisherName	British Standards Institution
Status	Current
Supersedes	01/565000 DC : DRAFT JAN 2002

Standards	Relationship
NF EN ISO 389-8 : 2004	Identical
I.S. EN ISO 389-8:2004	Identical
UNI EN ISO 389-8 : 2004	Identical
NEN EN ISO 389-8 : 2004	Identical
UNE-EN ISO 389-8:2004	Identical
SN EN ISO 389-8 : 2004	Identical
EN ISO 389-8:2004	Identical
ISO 389-8:2004	Identical
NS EN ISO 389-8 : 1ED 2004	Identical
NBN EN ISO 389-8 : 2004	Identical
DIN EN ISO 389-8:2004-11	Identical
DIN EN ISO 389-8 E : 2004	Identical

ISO/TR 389-5:1998	Acoustics Reference zero for the calibration of audiometric equipment Part 5: Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz to 16 kHz
ISO 4869-1:1990	Acoustics Hearing protectors Part 1: Subjective method for the measurement of sound attenuation
IEC 60318-2:1998	Electroacoustics - Simulators of human head and ear - Part 2: An interim acoustic coupler for the calibration of audiometric earphones in the extended high-frequency range
ISO 389-1:1998	Acoustics Reference zero for the calibration of audiometric equipment Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
ISO 8253-1:2010	Acoustics Audiometric test methods Part 1: Pure-tone air and bone conduction audiometry
IEC 60645-2:1993	Audiometers - Part 2: Equipment for speech audiometry
IEC 60318-1:2009	Electroacoustics - Simulators of human head and ear - Part 1: Ear simulator for the measurement of supra-aural and circumaural earphones

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BS EN ISO 389-8:2004

Acoustics. Reference zero for the calibration of audiometric equipment Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones

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