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  • BS ISO 6926 : 99 AMD 13404

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    ACOUSTICS - REQUIREMENTS FOR THE PERFORMANCE AND CALIBRATION OF REFERENCE SOUND SOURCES FOR THE DETERMINATION OF SOUND POWER LEVELS

    Available format(s): 

    Superseded date:  25-06-2002

    Language(s): 

    Published date:  23-11-2012

    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 Measurement uncertainty
    5 Performance requirements
          5.1 General
          5.2 Temporal steadiness and repeatability of sound
                 power output
          5.3 Total broad-band sound power level
          5.4 Spectral characteristics
          5.5 Directivity index
          5.6 Recalibration
    6 Installation and operation of the reference sound
          source during calibration
          6.1 General
          6.2 Position of the reference source
    7 Calibration procedure in hemi-anechoic rooms
          7.1 Test environment
          7.2 Microphone
          7.3 Microphone positions
          7.4 Measurements
          7.5 Air absorption
          7.6 Calculations
    8 Calibration procedure in reverberation rooms
          8.1 Test environment
          8.2 Microphone
          8.3 Microphone positions
          8.4 Measurements
          8.5 Calculations
    9 Information to be recorded
    10 Information to be reported
    Bibliography

    Abstract - (Show below) - (Hide below)

    Defines the acoustical performance requirements for reference sound sources - temporal steadiness and repeatability of the sound power output, spectral characteristics and directivity index.

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

    Committee EH/1
    Development Note Supersedes BS 4196-8(1991) (01/2000) Supersedes 95/521168 DC Renumbered and superseded by BS EN ISO 6926 (07/2002)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

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

    ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
    IEC 61183:1994 Electroacoustics - Random-incidence and diffuse-field calibration of sound level meters
    ISO 3744:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane
    ISO 9613-1:1993 Acoustics Attenuation of sound during propagation outdoors Part 1: Calculation of the absorption of sound by the atmosphere
    ISO 3741:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms
    ISO 3745:2012 Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for anechoic rooms and hemi-anechoic rooms
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