SIST ISO 1996-2:2017

Acoustics - Description, measurement and assessment of environmental noise - Part 2: Determination of sound pressure levels

ISO 1996-2:2017 describes how sound pressure levels intended as a basis for assessing environmental noise limits or comparison of scenarios in spatial studies can be determined. Determination can be done by direct measurement and by extrapolation of measurement results by means of calculation. This document is primarily intended to be used outdoors but some guidance is given for indoor measurements as well. It is flexible and to a large extent, the user determines the measurement effort and, accordingly, the measurement uncertainty, which is determined and reported in each case. Thus, no limits for allowable maximum uncertainty are set up. Often, the measurement results are combined with calculations to correct for reference operating or propagation conditions different from those during the actual measurement. This document can be applied on all kinds of environmental noise sources, such as road and rail traffic noise, aircraft noise and industrial noise.

Acoustique - Description, évaluation et mesurage du bruit de l'environnement -- Partie 2: Détermination des niveaux de pression acoustique

Akustika - Opis, merjenje in ocena hrupa v okolju - 2. del: Določanje ravni zvočnega tlaka

Ta dokument opisuje, kako je mogoče določiti ravni zvočnega tlaka kot osnovo za ocenjevanje mejnih vrednosti hrupa v okolju ali primerjavo scenarijev v prostorskih študijah. Določanje se lahko izvede z neposrednim merjenjem in ekstrapolacijo rezultatov meritev s pomočjo izračuna.
Ta dokument je namenjen predvsem uporabi na prostem, vendar je podanih tudi nekaj smernic za merjenje v zaprtih prostorih. Je prilagodljiv in uporabnik lahko v veliki meri določa merjenje in ustrezno tudi merilne negotovosti, ki so določene in podane za vsak primer. Zato niso določene nobene mejne vrednosti dovoljene največje negotovosti. Pogosto so rezultati meritev kombinirani z izračuni za popravke pri referenčnih obratovalnih pogojih ali pogojih za razširjanje, ki se razlikujejo od pogojev med dejanskim merjenjem. Ta dokument se lahko uporablja za vse vire hrupa v okolju, kot so hrup cestnega in železniškega prometa, letalski hrup in industrijski hrup.

General Information

• Status: Published In Translation
• Public Enquiry End Date: 19-Jun-2016
• Publication Date: 20-Aug-2017
• ICS: 13.140 - Noise with respect to human beings
• ICS: 17.140.01 - Acoustic measurements and noise abatement in general
• Technical Committee: AKU - Acoustics
• Current Stage: 6100 - Translation of adopted SIST standards (Adopted Project)
• Start Date: 01-Dec-2021
• Due Date: 30-Nov-2022
• Directive: 2004-01-5018 - Uredba o ocenjevanju in urejanju hrupa v okolju
• Directive: 2005-01-5191 - Uredba o načinu uporabe zvočnih naprav, ki na shodih in prireditvah povzročajo hrup
• Directive: 2008-01-4490 - Pravilnik o prvem ocenjevanju in obratovalnem monitoringu za vire hrupa ter o pogojih za njegovo izvajanje
• Directive: 2018-01-2127 - Uredba o mejnih vrednostih kazalcev hrupa v okolju
• Ref Project: ISO 1996-2:2017 - Acoustics — Description, measurement and assessment of environmental noise — Part 2: Determination of sound pressure levels

Relations

• Replaces: SIST ISO 1996-2:2007 - Acoustics - Description, measurement and assessment of environmental noise - Part 2: Determination of environmental noise levels
• Effective Date: 01-Sep-2016

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2017
1DGRPHãþD
SIST ISO 1996-2:2007
$NXVWLND2SLVPHUMHQMHLQRFHQDKUXSDYRNROMXGHO'RORþDQMHUDYQL
]YRþQHJDWODND
Acoustics - Description, measurement and assessment of environmental noise - Part 2:
Determination of sound pressure levels
Acoustique - Description, évaluation et mesurage du bruit de l'environnement -- Partie 2:
Détermination des niveaux de pression acoustique
Ta slovenski standard je istoveten z: ISO 1996-2:2017
ICS:
13.140 Vpliv hrupa na ljudi Noise with respect to human
beings
17.140.01 $NXVWLþQDPHUMHQMDLQ Acoustic measurements and
EODåHQMHKUXSDQDVSORãQR noise abatement in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 1996-2
Third edition
2017-07
Acoustics — Description,
measurement and assessment of
environmental noise —
Part 2:
Determination of sound pressure levels
Acoustique — Description, évaluation et mesurage du bruit de
l’environnement —
Partie 2: Détermination des niveaux de pression acoustique
Reference number
©
ISO 2017
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2017 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Measurement uncertainty . 3
5 Instrumentation for acoustical measurements . 5
5.1 General . 5
5.2 Calibration . 6
5.3 Verification . 6
5.4 Long-term monitoring . 6
6 Principles . 6
6.1 General . 6
6.2 Independent measurements . 7
7 Operation of the source . 8
7.1 General . 8
7.2 Road traffic . 8
7.2.1 L measurement . 8
eq
7.2.2 L measurement . 9
max
7.3 Rail traffic . 9
7.3.1 L measurement . 9
eq
7.3.2 L measurement . 9
max
7.4 Air traffic .10
7.4.1 L measurement .10
eq
7.4.2 L measurement .11
max
7.5 Industrial plants . .11
7.5.1 L measurement .11
eq
7.5.2 L measurement .11
max
8 Meteorological conditions .12
8.1 General .12
8.2 Favourable propagation .13
8.3 Effects of precipitation on measurements .13
9 Measurement procedures .13
9.1 Selection of measurement time interval .13
9.1.1 Long-term measurements .13
9.1.2 Short-term measurements .14
9.2 Microphone location .14
9.2.1 Outdoors .14
9.2.2 Indoors .15
9.3 Measurements .15
9.3.1 Long-term unattended measurements .15
9.3.2 Short-term attended measurements .16
9.3.3 Residual sound .17
9.3.4 Frequency range of measurements .17
9.3.5 Measurements of meteorological parameters .17
10 Evaluation of the measurement results .18
10.1 General .18
10.2 Determination of L , L and L .
E,T eq,T N,T 18
10.2.1 L and L .
E,T eq,T 18
10.2.2 L .
N,T 18
10.3 Treatment of incomplete or corrupted data .19
10.3.1 General.19
10.3.2 Wind sound .19
10.4 Level correction for residual sound .19
10.5 Determination of standard uncertainty .19
10.6 Determination of L .
den 20
10.6.1 Determination from long-term L measurements .20
eq
10.6.2 Determination from long-term L measurements of individual events.20
E
10.6.3 Determination from short-term measurements .21
10.7 Maximum level, L .
max 22
11 Extrapolation to other locations .22
11.1 General .22
11.2 Extrapolation by means of calculations.22
11.3 Extrapolation by means of measured attenuation functions .23
12 Calculation .23
12.1 General .23
12.2 Calculation methods .
...

INTERNATIONAL ISO
STANDARD 1996-2
Third edition
2017-07
Acoustics — Description,
measurement and assessment of
environmental noise —
Part 2:
Determination of sound pressure levels
Acoustique — Description, évaluation et mesurage du bruit de
l’environnement —
Partie 2: Détermination des niveaux de pression acoustique
Reference number
©
ISO 2017
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2017 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Measurement uncertainty . 3
5 Instrumentation for acoustical measurements . 5
5.1 General . 5
5.2 Calibration . 6
5.3 Verification . 6
5.4 Long-term monitoring . 6
6 Principles . 6
6.1 General . 6
6.2 Independent measurements . 7
7 Operation of the source . 8
7.1 General . 8
7.2 Road traffic . 8
7.2.1 L measurement . 8
eq
7.2.2 L measurement . 9
max
7.3 Rail traffic . 9
7.3.1 L measurement . 9
eq
7.3.2 L measurement . 9
max
7.4 Air traffic .10
7.4.1 L measurement .10
eq
7.4.2 L measurement .11
max
7.5 Industrial plants . .11
7.5.1 L measurement .11
eq
7.5.2 L measurement .11
max
8 Meteorological conditions .12
8.1 General .12
8.2 Favourable propagation .13
8.3 Effects of precipitation on measurements .13
9 Measurement procedures .13
9.1 Selection of measurement time interval .13
9.1.1 Long-term measurements .13
9.1.2 Short-term measurements .14
9.2 Microphone location .14
9.2.1 Outdoors .14
9.2.2 Indoors .15
9.3 Measurements .15
9.3.1 Long-term unattended measurements .15
9.3.2 Short-term attended measurements .16
9.3.3 Residual sound .17
9.3.4 Frequency range of measurements .17
9.3.5 Measurements of meteorological parameters .17
10 Evaluation of the measurement results .18
10.1 General .18
10.2 Determination of L , L and L .
E,T eq,T N,T 18
10.2.1 L and L .
E,T eq,T 18
10.2.2 L .
N,T 18
10.3 Treatment of incomplete or corrupted data .19
10.3.1 General.19
10.3.2 Wind sound .19
10.4 Level correction for residual sound .19
10.5 Determination of standard uncertainty .19
10.6 Determination of L .
den 20
10.6.1 Determination from long-term L measurements .20
eq
10.6.2 Determination from long-term L measurements of individual events.20
E
10.6.3 Determination from short-term measurements .21
10.7 Maximum level, L .
max 22
11 Extrapolation to other locations .22
11.1 General .22
11.2 Extrapolation by means of calculations.22
11.3 Extrapolation by means of measured attenuation functions .23
12 Calculation .23
12.1 General .23
12.2 Calculation methods .24
12.2.1 General.24
12.2.2 Specific procedures .24
13 Information to be recorded and reported .24
Annex A (informative) Determination of radius of curvature .26
Annex B (informative) Microphone locations relative to reflecting surfaces .29
Annex C (informative) Selection of measurement/monitoring site .34
Annex D (informative) Correction to reference
...