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  • UNI EN ISO 3741 : 2010

    Current The latest, up-to-date edition.

    ACOUSTICS - DETERMINATION OF SOUND POWER LEVELS AND SOUND ENERGY LEVELS OF NOISE SOURCES USING SOUND PRESSURE - PRECISION METHODS FOR REVERBERATION TEST ROOMS

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    Published date:  25-11-2010

    Publisher:  Ente Nazionale Italiano di Unificazione (UNI)

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

    PREMESSA
    INTRODUZIONE
    1 SCOPO E CAMPO DI APPLICAZIONE
    2 RIFERIMENTI NORMATIVI
    3 TERMINI E DEFINIZIONI
    4 CONDIZIONI METEOROLOGICHE DI RIFERIMENTO
    5 CAMERA DI PROVA RIVERBERANTE
    6 STRUMENTAZIONE E ATTREZZATURA DI MISURAZIONE
    7 DEFINIZIONE, POSIZIONAMENTO, INSTALLAZIONE E
       FUNZIONAMENTO DELLA SORGENTE DI RUMORE
       SOTTOPOSTA A PROVA
    8 MISURAZIONI NELLA CAMERA DI PROVA RIVERBERANTE
    9 DETERMINAZIONE DEI LIVELLI DI POTENZA SONORA E DEI
       LIVELLI DI ENERGIA SONORA
    10 INCERTEZZA NELLA MISURAZIONE
    11 INFORMAZIONI DA REGISTRARE
    12 RAPPORTO DI PROVA
    APPENDICE A (informativa) - LINEE GUIDA PER LA PROGETTAZIONE
                DELLE CAMERE RIVERBERANTI
    APPENDICE B (informativa) - LINEE GUIDA PER LA PROGETTAZIONE
                DEI DIFFUSORI ROTANTI
    APPENDICE C (normativa) - PROCEDURA DI QUALIFICAZIONE DELLA
                CAMERA DI PROVA RIVERBERANTE PER LA MISURAZIONE
                DEL SUONO AD AMPIO SPETTRO
    APPENDICE D (normativa) - PROCEDURA DI QUALIFICAZIONE DELLA
                CAMERA DI PROVA RIVERBERANTE PER LA MISURAZIONE
                DI COMPONENTI DI FREQUENZE DISCRETE
    APPENDICE E (informativa) - ESTENSIONE DELL'INTERVALLO DELLE
                FREQUENZE ALLE FREQUENZE MINORI DI 100 HZ
    APPENDICE F (normativa) - CALCOLO DEI LIVELLI DI POTENZA SONORA
                E DEI LIVELLI DI ENERGIA SONORA DI BANDA DI OTTAVA,
                DEI LIVELLI DI POTENZA SONORA PONDERATI A E DEI
                LIVELLI DI ENERGIA SONORA PONDERATI A DAI LIVELLI
                DI BANDA DI TERZO DI OTTAVA
    APPENDICE G (informativa) - LINEE GUIDA PER LO SVILUPPO DELLE
                INFORMAZIONI SULL'INCERTEZZA DI MISURAZIONE
    APPENDICE ZA (informativa) - RAPPORTO TRA LA PRESENTE NORMA
                 EUROPEA E I REQUISITI ESSENZIALI DELLA DIRETTIVA
                 UE 2006/42/CE
    BIBLIOGRAFIA

    Abstract - (Show below) - (Hide below)

    Describes methods for determining the sound power level or sound energy level of a noise source from sound pressure levels measured in a reverberation test room.

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

    Committee CT 2
    Development Note Supersedes UNI EN 23741 and UNI EN 23742. (07/2001) Bilingual (Italian + English) version issued in OCTOBER 2011. (10/2011)
    Document Type Standard
    Publisher Ente Nazionale Italiano di Unificazione (UNI)
    Status Current
    Supersedes

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

    UNI TR 11326 : 2009 Acoustics - Evaluation of the uncertainty of measurements and calculations in acoustics - Parte 1: General concepts

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

    ISO 7574-2:1985 Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 2: Methods for stated values for individual machines
    ISO 4871:1996 Acoustics — Declaration and verification of noise emission values of machinery and equipment
    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 354:2003 Acoustics — Measurement of sound absorption in a reverberation room
    ISO 3743-2:1994 Acoustics Determination of sound power levels of noise sources using sound pressure Engineering methods for small, movable sources in reverberant fields Part 2: Methods for special reverberation test rooms
    ISO 3382-2:2008 Acoustics Measurement of room acoustic parameters Part 2: Reverberation time in ordinary rooms
    ISO 7574-4:1985 Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 4: Methods for stated values for batches of machines
    ISO/TR 25417:2007 Acoustics Definitions of basic quantities and terms
    ISO 9614-1:1993 Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points
    IEC 60942:2003 Electroacoustics - Sound calibrators
    ISO 9296:2017 Acoustics — Declared noise emission values of information technology and telecommunications equipment
    ISO 3747:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering/survey methods for use in situ in a reverberant environment
    ISO 3740:2000 Acoustics Determination of sound power levels of noise sources Guidelines for the use of basic standards
    ISO 9613-1:1993 Acoustics Attenuation of sound during propagation outdoors Part 1: Calculation of the absorption of sound by the atmosphere
    ISO 9614-2:1996 Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 2: Measurement by scanning
    ISO 7574-1:1985 Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 1: General considerations and definitions
    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 3746:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Survey method using an enveloping measurement surface over a reflecting plane
    ISO 6926:2016 Acoustics Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels
    ISO 9614-3:2002 Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 3: Precision method for measurement by scanning
    ISO 7574-3:1985 Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 3: Simple (transition) method for stated values for batches of machines
    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
    ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
    ISO 3743-1:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for small movable sources in reverberant fields Part 1: Comparison method for a hard-walled test room
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