Skip to content
Please enter a keyword to search

  • BS EN ISO 389-8:2004

    Current The latest, up-to-date edition.

    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

    Add To Cart

    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    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).

    Scope - (Show below) - (Hide below)

    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.

    General Product Information - (Show below) - (Hide below)

    Committee EH/1/1
    Development Note Supersedes 01/565000 DC. (06/2004)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    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
    View more information

    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective