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  • BS EN ISO 389-7 : 2005

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    ACOUSTICS - REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT - PART 7: REFERENCE THRESHOLD OF HEARING UNDER FREE-FIELD AND DIFFUSE-FIELD LISTENING CONDITIONS (ISO 389-7:2005)

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  06-12-2019

    Language(s):  English

    Published date:  01-01-2005

    Publisher:  British Standards Institution

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

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Specification
    Annex A (informative) - Notes on the derivation of the
            reference thresholds of hearing
    Bibliography

    Abstract - (Show below) - (Hide below)

    Provides a reference threshold of hearing for the calibration of audiometric equipment used under the following conditions: - The sound field in the absence of the listener consists of either a free progressive plane wave (free field) or a diffuse sound field, as specified in ISO 8253-2. In the case of a free field, the source of sound is directly in front of the listener (frontal incidence). - The sound signals are pure (sinusoidal) tones in the case of free-field conditions and one-third octave bands of (white or pink) noise in the case of diffuse-field conditions. - The sound pressure level is measured in the absence of the listener at the position where the centre of the listener's head would be. - Listening is binaural.

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    Committee EH/1/1
    Development Note Supersedes 93/508224 DC. (10/2005) Supersedes 04/30095174 DC. (02/2006) Supersedes 15/30313896 DC. 2005 Edition Re-issued in October 2016 & incorporates AMD 1 2016. (10/2016)
    Document Type Standard
    Publisher British Standards Institution
    Status Withdrawn
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 4142:2014 Methods for rating and assessing industrial and commercial sound
    PD 6545:2005 Intended use of human head and ear simulators-guide

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

    IEC 60645-4:1994 Audiometers - Part 4: Equipment for extended high-frequency audiometry
    ISO 266:1997 Acoustics — Preferred frequencies
    IEC 60645-1:2017 Electroacoustics - Audiometric equipment - Part 1: Equipment for pure-tone and speech audiometry
    ISO 389-8:2004 Acoustics — Reference zero for the calibration of audiometric equipment — Part 8: Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones
    ISO 389-5:2006 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 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
    ISO 389-5:2006(R2014) 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 389-2:1994 Acoustics Reference zero for the calibration of audiometric equipment Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones
    ISO 8253-2:2009 Acoustics Audiometric test methods Part 2: Sound field audiometry with pure-tone and narrow-band test signals
    ISO 226:2003 Acoustics — Normal equal-loudness-level contours
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