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  • 17/30359986 DC : 0

    NA Status of Standard is Unknown

    BS EN ISO 7779 - ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date: 

    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 Conformity requirements
    5 Installation and operating conditions
    6 Method for determination of sound power
       levels of equipment in reverberation test rooms
    7 Method for determination of sound power
       levels of equipment under essentially
       free-field conditions over a reflecting plane
    8 Method for determination of emission sound
       pressure levels at defined operator
       and bystander positions
    9 Measurement uncertainty
    10 Information to be recorded and reported
    Annex A (normative) - Test accessories
    Annex B (normative) - Measurement surfaces
    Annex C (normative) - Installation and operating
            conditions for specific equipment categories
    Annex D (informative) - Identification and evaluation
            of prominent discrete tones
    Annex E (informative) - Detection of impulsive noise
    Bibliography

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

    Comment Closes On
    Committee EH/1/4
    Document Type Draft
    Publisher British Standards Institution
    Status NA

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

    IEC 61183:1994 Electroacoustics - Random-incidence and diffuse-field calibration of sound level meters
    ISO 12001:1996 Acoustics Noise emitted by machinery and equipment Rules for the drafting and presentation of a noise test code
    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 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/TR 25417:2007 Acoustics Definitions of basic quantities and terms
    IEC 60942:2003 Electroacoustics - Sound calibrators
    ISO 266:1997 Acoustics — Preferred frequencies
    ISO 9296:2017 Acoustics — Declared noise emission values of information technology and telecommunications equipment
    ECMA 108 : 6ED 2016 DETERMINATION OF HIGH-FREQUENCY SOUND POWER LEVELS EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT
    ISO 28961:2012 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
    ISO 80000-8:2007 Quantities and units Part 8: Acoustics
    ISO 9295:2015 Acoustics Determination of high-frequency sound power levels emitted by machinery and equipment
    ISO 6926:2016 Acoustics Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels
    ISO 11203:1995 Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at a work station and at other specified positions from the sound power level
    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
    IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters
    ECMA 109 : 7ED 2016 DECLARED NOISE EMISSION VALUES OF INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT
    ECMA/TR 27 : 2ED 95 METHOD FOR THE PREDICTION OF INSTALLATION NOISE LEVELS
    ISO 11201:2010 Acoustics Noise emitted by machinery and equipment Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections
    ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
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