ISO 16283-2:2020
(Main)Acoustics — Field measurement of sound insulation in buildings and of building elements — Part 2: Impact sound insulation
Acoustics — Field measurement of sound insulation in buildings and of building elements — Part 2: Impact sound insulation
This document specifies procedures to determine the impact sound insulation using sound pressure measurements with an impact source operating on a floor or stairs in a building. These procedures are intended for room volumes in the range from 10 m3 to 250 m3 in the frequency range from 50 Hz to 5 000 Hz. The test results can be used to quantify, assess and compare the impact sound insulation in unfurnished or furnished rooms where the sound field may or may not approximate to a diffuse field.
Acoustique — Mesurage in situ de l'isolation acoustique des bâtiments et des éléments de construction — Partie 2: Isolation des bruits d'impacts
Le présent document spécifie les modes opératoires permettant de déterminer l'isolation des bruits d'impacts à l'aide de mesurages de la pression acoustique avec une source d'impacts agissant sur un sol ou sur un escalier à l'intérieur d'un bâtiment. Ces modes opératoires s'appliquent aux pièces dont le volume est compris entre 10 m3 et 250 m3 et dont la fréquence est comprise entre 50 Hz et 5 000 Hz. Les résultats des essais peuvent être utilisés pour quantifier, évaluer et comparer l'isolation des bruits d'impacts dans des pièces non meublées ou meublées où le champ acoustique peut, ou ne peut pas, être assimilé à un champ diffus.
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INTERNATIONAL ISO
STANDARD 16283-2
Third edition
2020-07
Acoustics — Field measurement of
sound insulation in buildings and of
building elements —
Part 2:
Impact sound insulation
Acoustique — Mesurage in situ de l'isolation acoustique des
bâtiments et des éléments de construction —
Partie 2: Isolation des bruits d'impacts
Reference number
ISO 16283-2:2020(E)
©
ISO 2020
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ISO 16283-2:2020(E)
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© ISO 2020
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Published in Switzerland
ii © ISO 2020 – All rights reserved
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ISO 16283-2:2020(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Instrumentation . 5
4.1 General . 5
4.2 Calibration . 5
4.3 Verification . 5
5 Frequency range . 6
5.1 Tapping machine as the impact source . 6
5.2 Rubber ball as the impact source . 6
6 General . 6
7 Default procedure for sound pressure level measurement . 7
7.1 General . 7
7.2 Generation of sound field . 7
7.2.1 General. 7
7.2.2 Impact source positions for the tapping machine as impact source . 7
7.2.3 Impact source positions for the rubber ball as impact source . 8
7.3 Fixed microphone positions for the tapping machine or rubber ball as impact source . 8
7.3.1 General. 8
7.3.2 Number of measurements . 8
7.3.3 Tapping machine operated at more than one position . 8
7.3.4 Rubber ball operated at more than one position . 9
7.4 Mechanized continuously moving microphone for the tapping machine as impact source 9
7.4.1 General. 9
7.4.2 Number of measurements .10
7.4.3 Tapping machine operated at more than one position .10
7.5 Manually scanned microphone for the tapping machine as impact source .10
7.5.1 General.10
7.5.2 Number of measurements .10
7.5.3 Tapping machine operated at more than one position .10
7.5.4 Circle .10
7.5.5 Helix .10
7.5.6 Cylindrical-type . .11
7.5.7 Three semicircles .11
7.6 Minimum distances for microphone positions .12
7.7 Averaging times for the tapping machine as impact source .12
7.7.1 Fixed microphone positions.12
7.7.2 Mechanized continuously moving microphone .13
7.7.3 Manually scanned microphone .13
7.8 Calculation of energy-average sound pressure levels .13
7.8.1 Fixed microphone positions for the tapping machine as impact source .13
7.8.2 Mechanized continuously moving microphone and manually scanned
microphone for the tapping machine as impact source .13
7.8.3 Fixed microphone positions for the rubber ball as impact source .14
8 Low-frequency procedure for sound pressure level measurement for the tapping
machine as impact source .14
8.1 General .14
8.2 Generation of sound field .14
8.2.1 General.14
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ISO 16283-2:2020(E)
8.2.2 Impact source positions .14
8.3 Microphone positions .14
8.4 Averaging time .15
8.5 Calculation of low-frequency energy-average impact sound pressure levels .15
9 Background noise (default and low-frequency procedure) .16
9.1 General .16
9.2 Correction to the signal level for background noise .17
10 Reverberation time in the receiving room (default and low-frequency procedure) .18
10.1 General .18
10.2 Generation of sound field .18
10.3 Default procedure .18
10.4 Low-frequency procedure .18
10.5 Interrupted noise method .19
10.6 Integrated impulse response method .19
11 Conversion to octave bands .19
12 Expression of results .20
13 Uncertainty .20
14 Test report .20
Annex A (normative) Impact sources .21
Annex B (normative) Requirements for loudspeakers used for reverberation time
measurements .27
Annex C (informative) Forms for the expression of results .28
Annex D (informative) Additional guidance .32
Annex E (informative) Horizontal measurements — Examples of suitable impact source
and microphone positions.36
Annex F (informative) Vertical measurements — Examples of suitable impact source and
microphone positions .40
Bibliography .43
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ISO 16283-2:2020(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 2,
Building acoustics, in collaboration with the European Committee for Standardization (CEN) Technical
Committee CEN/TC 126, Acoustic properties of building elements and of buildings, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 16283-2:2018), which has been
technically revised.
The main changes compared to the previous edition are as follows:
a) Clause 6, Note 3 removed;
b) in the helical path (7.5.5) distance of the microphone position to the ceiling changed to
minimum 0,5 m;
c) L′ added to the expression of results and to Figure C.3.
iA,Fmax,V,T
A list of all parts in the ISO 16283 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
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ISO 16283-2:2020(E)
Introduction
ISO 16283 (all parts) describes procedures for field measurements of sound insulation in buildings.
Airborne, impact and façade sound insulation are described in ISO 16283-1, this document (ISO 16283-2)
and ISO 16283-3, respectively.
1) 2)
Field sound insulation measurements that were described previously in ISO 140-4 , ISO 140-5 , and
3)
ISO 140-7 were a) primarily intended for measurements where the sound field could be considered
to be diffuse, and b) not explicit as to whether operators could be present in the rooms during the
measurement. ISO 16283 (all parts) differs from ISO 140-4, ISO 140-5, and ISO 140-7 in that:
a) it applies to rooms in which the sound field may or may not approximate to a diffuse field;
b) it clarifies how operators can measure the sound field using a hand-held microphone or sound
level meter;
4)
c) it includes additional guidance that was previously contained in ISO 140-14 .
NOTE Survey test methods for field measurements of airborne and impact sound insulation are dealt with in
ISO 10052.
Two impact sources are described: the tapping machine and the rubber ball. These impact sources do
not exactly replicate all possible types of real impacts on floors or stairs in buildings.
The tapping machine can be used to assess a variety of light, hard impacts such as footsteps from
walkers wearing hard-heeled footwear or dropped objects. A single number quantity can be calculated
using the rating procedures in ISO 717-2. This single number quantity links the measured impact
sound insulation using the tapping machine to subjective assessment of general impacts in dwellings
that occur on floors or stairs in a building. The tapping machine is also well-suited to the prediction
of impact sound insulation using ISO 12354-2. These two aspects facilitate the specification of impact
sound insulation in national building requirements using only measurements with the tapping machine
as an impact source.
The rubber ball can be used to assess heavy, soft impacts such as from walkers in bare feet or children
jumping, as well as quantifying absolute values that can be related to human disturbance in terms of a
Fast time-weighted maximum sound pressure level.
1) Withdrawn.
2) Withdrawn.
3) Withdrawn.
4) Withdrawn.
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INTERNATIONAL STANDARD ISO 16283-2:2020(E)
Acoustics — Field measurement of sound insulation in
buildings and of building elements —
Part 2:
Impact sound insulation
1 Scope
This document specifies procedures to determine the impact sound insulation using sound pressure
measurements with an impact source operating on a floor or stairs in a building. These procedures are
3 3
intended for room volumes in the range from 10 m to 250 m in the frequency range from 50 Hz to
5 000 Hz. The test results can be used to quantify, assess and compare the impact sound insulation in
unfurnished or furnished rooms where the sound field may or may not approximate to a diffuse field.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3382-2, Acoustics — Measurement of room acoustic parameters — Part 2: Reverberation time in
ordinary rooms
ISO 12999-1, Acoustics — Determination and application of measurement uncertainties in building
acoustics — Part 1: Sound insulation
ISO 18233, Acoustics — Application of new measurement methods in building and room acoustics
ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories
IEC 60942, Electroacoustics — Sound calibrators
IEC 61183, Electroacoustics — Random-incidence and diffuse-field calibration of sound level meters
IEC 61260 (all parts), Electroacoustics — Octave-band and fractional-octave-band filters
IEC 61672-1, Electroacoustics — Sound level meters — Part 1: Specifications
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
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ISO 16283-2:2020(E)
3.1
energy-average impact sound pressure level in a room
L
i
ten times the common logarithm of the ratio of the space and time average of the squared sound
pressure to the square of the reference sound pressure where the impact source is the tapping machine
and the space average is taken over the central zone of the room where nearfield radiation from the
room boundaries has negligible influence
Note 1 to entry: L is expressed in decibels (dB).
i
3.2
corner impact sound pressure level in a room
L
i,Corner
ten times the common logarithm of the ratio of the highest time average squared sound pressure from
the set of corner measurements to the square of the reference sound pressure for the low-frequency
range (50 Hz, 63 Hz and 80 Hz one-third octave bands) where the impact source is the tapping machine
Note 1 to entry: L is expressed in decibels (dB).
i,Corner
3.3
low-frequency energy-average impact sound pressure level in a room
L
i,LF
ten times the common logarithm of the ratio of the space and time average of the squared sound
pressure to the square of the reference sound pressure in the low-frequency range (50 Hz, 63 Hz and
80 Hz one-third octave bands) where the impact source is the tapping machine and the space average
is a weighted average that is calculated using the room corners where the sound pressure levels are
highest and the central zone of the room where nearfield radiation from the room boundaries has
negligible influence
Note 1 to entry: L is expressed in decibels (dB).
i,LF
Note 2 to entry: L is an estimate of the energy-average sound pressure level for the entire room volume.
i,LF
3.4
energy-average maximum impact sound pressure level in a room
L
i,Fmax
ten times the common logarithm of the ratio of the space average of the squared maximum sound
pressure with Fast time weighting to the square of the reference sound pressure where the impact
source is the rubber ball and the space average is taken over the central zone of the room where
nearfield radiation from the room boundaries has negligible influence
Note 1 to entry: L is expressed in decibels (dB).
i,Fmax
3.5
reverberation time
T
time required for the sound pressure level in a room to decrease by 60 dB after the sound source
has stopped
Note 1 to entry: T is expressed in seconds (s).
3.6
background noise level
measured sound pressure level in the receiving room from all sources except the impact source
3.7
fixed microphone
microphone that is fixed in space by using a device such as a tripod so that it is stationary
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ISO 16283-2:2020(E)
3.8
mechanized continuously moving microphone
microphone that is mechanically moved with approximately constant angular speed in a circle, or is
mechanically swept along a circular path where the angle of rotation about a fixed axis is between 270°
and 360°
3.9
manually scanned microphone
microphone attached to a hand-held sound level meter or an extension rod that is moved by a human
operator along a prescribed path
3.10
manually held microphone
microphone attached to a hand-held sound level meter or a rod that is hand-held at a fixed position by a
human operator at a distance of at least an arm’s length from the trunk of the operator’s body
3.11
partition
total surface of the floor or stair which is excited by the impact source
Note 1 to entry: For two rooms which are staggered vertically or horizontally, the total surface of the separating
partition is not visible from both sides of the partition; hence it is necessary to define the partition as the total
surface.
3.12
common partition
part of the floor or stair that is common to both the room in which the impact source is used and the
receiving room
3.13
standardized impact sound pressure level
L′
nT
energy-average impact sound pressure level (L ) (3.1), reduced by a correction term that is given in
i
decibels, being ten times the common logarithm of the ratio of the measured reverberation time (T)
(3.5), to the reference reverberation time, T , which is calculated using Formula (1) when the impact
0
source is the tapping machine:
T
′
LL=−10lg (1)
niT
T
0
where
T is the reverberation time in the receiving room, in s;
T is the reference reverberation time, in s (for dwellings, T = 0,5 s).
0 0
Note 1 to entry: L′ is expressed in decibels (dB).
nT
Note 2 to entry: The impact sound pressure level is referenced to a reverberation time (3.5) of 0,5 s because, in
dwellings with furniture, the reverberation time has been found to be reasonably independent of volume and
frequency and to be approximately equal to 0,5 s.
Note 3 to entry: L′ provides a straightforward link to the subjective impression of impact sound insulation.
nT
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ISO 16283-2:2020(E)
3.14
equivalent absorption area
A
hypothetical area of a totally absorbing surface without diffraction effects which, if it were the only
absorbing element in the room, would give the same reverberation time (3.5) as the room under
consideration and is calculated using Sabine's formula in Formula (2):
01, 6V
A= (2)
T
where
3
V is the receiving room volume, in m ;
T is the reverberation time in the receiving room, in s.
2
Note 1 to entry: A is expressed in square metres (m ).
3.15
normalized impact sound pressure level
L′
n
energy-average impact sound pressure level (L ) (3.1), increased by a correction term that is given
i
in decibels, being ten times the common logarithm of the ratio between the measured equivalent
absorption area (A) (3.14), of the receiving room and the reference equivalent absorption area, A , which
0
is calculated using Formula (3) when the impact source is the tapping machine:
A
′
LL=+10lg (3)
ni
A
0
where
2
A is the equivalent absorption area in the receiving room, in m ;
2 2
A is the reference equivalent absorption area, in m (for dwellings, A = 10 m ).
0 0
Note 1 to entry: L′ is expressed in decibels (dB).
n
3.16
standardized maximum impact sound pressure level
L′
i,Fmax,V,T
energy-average maximum impact sound pressure level (L ) (3.4), increased by a correction term for
i,Fmax
room volume and reduced by a correction term for reverberation time and Fast time weighting, which
is calculated using Formulae (4), (5) and (6) when the impact source is the rubber ball:
−1
−−1
−1
−1 −−1 C
()
()1−C
1−C
V CC−
0
′
LL=+10lg −10lg (4)
iF,amix,VT, ,Fmax
−1
−1
V −1 −1
1−C
−−1 C
0 1−C ()
()
0 0
CC−
0 0
T
0
C = (5)
0
1,7275
T
C= (6)
1,7275
where
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ISO 16283-2:2020(E)
T is the reverberation time in the receiving room, in s;
T is the reference reverberation time, in s (for dwellings, T = 0,5 s);
0 0
3
V is the receiving room volume, in m ;
3 3
V is the reference receiving room volume, in m (for dwellings, V = 50 m ).
0 0
Note 1 to entry: L′ is expressed in decibels (dB).
i,Fmax,V,T
Note 2 to entry: Background information can be found in Reference [1].
4 Instrumentation
4.1 General
The instruments for measuring sound pressure levels, including microphone(s) as well as cable(s),
windscreen(s), recording devices and other accessories, if used, shall meet the requ
...
NORME ISO
INTERNATIONALE 16283-2
Troisième édition
2020-07
Acoustique — Mesurage in situ de
l'isolation acoustique des bâtiments et
des éléments de construction —
Partie 2:
Isolation des bruits d'impacts
Acoustics — Field measurement of sound insulation in buildings and
of building elements —
Part 2: Impact sound insulation
Numéro de référence
ISO 16283-2:2020(F)
©
ISO 2020
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ISO 16283-2:2020(F)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2020
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Publié en Suisse
ii © ISO 2020 – Tous droits réservés
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ISO 16283-2:2020(F)
Sommaire Page
Avant-propos .v
Introduction .vi
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Instrumentation . 5
4.1 Généralités . 5
4.2 Étalonnage . 5
4.3 Vérification . 5
5 Gamme de fréquences . 6
5.1 Source d’impacts: machine à chocs . 6
5.2 Source d’impacts: balle en caoutchouc . 6
6 Généralités . 6
7 Mode opératoire par défaut pour le mesurage du niveau de pression acoustique .7
7.1 Généralités . 7
7.2 Production du champ acoustique . 8
7.2.1 Généralités . 8
7.2.2 Positions de la source d’impacts lorsque la machine à chocs est la source
d’impacts. 8
7.2.3 Positions de la source d’impacts lorsque la balle en caoutchouc est la
source d’impacts . 8
7.3 Positions de microphone fixe lorsque la machine à chocs ou la balle en caoutchouc
est la source d’impacts . 8
7.3.1 Généralités . 8
7.3.2 Nombre de mesurages . 9
7.3.3 Machine à chocs utilisée en plusieurs positions . 9
7.3.4 Balle en caoutchouc utilisée en plusieurs positions. 9
7.4 Microphone à mouvement continu mécanisé lorsque la machine à chocs est
la source d’impacts .10
7.4.1 Généralités .10
7.4.2 Nombre de mesurages .10
7.4.3 Machine à chocs utilisée en plusieurs positions .10
7.5 Microphone à déplacement manuel lorsque la machine à chocs est la source d’impacts .10
7.5.1 Généralités .10
7.5.2 Nombre de mesurages .10
7.5.3 Machine à chocs utilisée en plusieurs positions .11
7.5.4 Cercle .11
7.5.5 Hélice .11
7.5.6 Type cylindrique .11
7.5.7 Trois demi-cercles .11
7.6 Distances minimales pour les positions de microphone .12
7.7 Durées de moyennage lorsque la machine à chocs est la source d’impacts . .12
7.7.1 Positions de microphone fixe .12
7.7.2 Microphone à mouvement continu mécanisé .13
7.7.3 Microphone à déplacement manuel .13
7.8 Calcul des niveaux moyens de pression acoustique (moyenne énergétique) .13
7.8.1 Positions de microphone fixe lorsque la machine à chocs est la source
d’impacts.13
7.8.2 Microphone à mouvement continu mécanisé et microphone à
déplacement manuel lorsque la machine à chocs est la source d’impacts .13
7.8.3 Positions de microphone fixe lorsque la balle en caoutchouc est la source
d’impacts.14
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ISO 16283-2:2020(F)
8 Mode opératoire pour les basses fréquences pour le mesurage du niveau
de pression acoustique lorsque la machine à chocs est la source d’impacts .14
8.1 Généralités .14
8.2 Production du champ acoustique .14
8.2.1 Généralités .14
8.2.2 Positions de la source d’impacts .14
8.3 Positions de microphone .14
8.4 Durée de moyennage .15
8.5 Calcul des niveaux moyens de pression acoustique basse fréquence des bruits
d’impacts (moyenne énergétique) .16
9 Bruit de fond (mode opératoire par défaut et mode opératoire pour les basses
fréquences) .16
9.1 Généralités .16
9.2 Correction du niveau du signal pour le bruit de fond .17
10 Durée de réverbération dans la salle de réception (mode opératoire par défaut et
mode opératoire pour les basses fréquences) .18
10.1 Généralités .18
10.2 Production du champ acoustique .18
10.3 Mode opératoire par défaut .19
10.4 Mode opératoire pour les basses fréquences .19
10.5 Méthode du bruit interrompu .19
10.6 Méthode de la réponse impulsionnelle intégrée .19
11 Conversion en bandes d’octave .19
12 Expression des résultats.20
13 Incertitude .20
14 Rapport d’essai .20
Annexe A (normative) Sources d’impacts .22
Annexe B (normative) Exigences relatives aux haut-parleurs utilisés pour les mesurages de
la durée de réverbération .28
Annexe C (informative) Formulaires d’expression des résultats .29
Annexe D (informative) Autres recommandations .33
Annexe E (informative) Mesurages horizontaux — Exemples de positions appropriées
de la source d’impacts et de microphone .37
Annexe F (informative) Mesurages verticaux — Exemples de positions appropriées
de la source d’impacts et de microphone .41
Bibliographie .44
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ISO 16283-2:2020(F)
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes
nationaux de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est
en général confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l’ISO participent également aux travaux.
L’ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier de prendre note des différents
critères d’approbation requis pour les différents types de documents ISO. Le présent document a été
rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir www
.iso .org/ directives).
L’attention est attirée sur le fait que certains des éléments du présent document peuvent faire l’objet de
droits de propriété intellectuelle ou de droits analogues. L’ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant
les références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de
l’élaboration du document sont indiqués dans l’Introduction et/ou dans la liste des déclarations de
brevets reçues par l’ISO (voir www .iso .org/ brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données
pour information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un
engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l’ISO liés à l’évaluation de la conformité, ou pour toute information au sujet de l’adhésion
de l’ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles
techniques au commerce (OTC), voir le lien suivant: www .iso .org/ iso/ fr/ avant-propos.
Le présent document a été élaboré par le comité technique ISO/TC 43, Acoustique, sous-comité SC 2,
Acoustique des bâtiments en collaboration avec le Comité technique CEN/TC 126, Propriétés acoustiques
des éléments de construction et des bâtiments, du Comité européen de normalisation (CEN) conformément
à l’Accord de coopération technique entre l’ISO et le CEN (Accord de Vienne).
Cette troisième édition annule et remplace la deuxième édition (ISO 162832:2018), qui a fait l’objet
d’une révision technique.
Les principales modifications par rapport à l’édition précédente sont les suivantes:
a) Article 6, Note 3 supprimée;
b) dans la trajectoire hélicoïdale (7.5.5), la distance entre la position du microphone et le plafond est
passée à au moins 0,5 m;
c) L′ ajouté à l’expression des résultats et à la Figure C.3.
iA,Fmax,V,T
Une liste de toutes les parties de la série ISO 16283 se trouve sur le site web de l’ISO.
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes
se trouve à l’adresse www .iso .org/ fr/ members .html.
© ISO 2020 – Tous droits réservés v
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ISO 16283-2:2020(F)
Introduction
L’ISO 16283 (toutes les parties) décrit les méthodes de mesure in situ de l’isolation acoustique des
bâtiments. L’isolation des bruits aériens, celle des bruits d’impacts et celle des bruits de façades sont
décrites respectivement dans l’ISO 16283-1, le présent document (ISO 16283-2) et l’ISO 16283-3.
1)
Les mesurages de l’isolation acoustique in situ qui ont été décrits précédemment dans l’ISO 140-4 ,
2) 3)
dans l’ISO 140-5 , et dans l’ISO 140-7 présentent deux limites: a) ils sont avant tout applicables à des
pièces au sein desquelles le champ acoustique peut être considéré comme diffus et b) ils ne précisent
pas si les opérateurs peuvent rester dans les pièces au cours des mesurages. L’ISO 16283 (toutes les
parties) diffère de l’ISO 140-4, de l’ISO 140-5 et de l’ISO 140-7 en ce:
a) qu’elle s’applique aux pièces dans lesquelles le champ acoustique peut, ou ne peut pas, être assimilé
à un champ diffus;
b) qu’elle clarifie la manière dont les opérateurs peuvent mesurer le champ acoustique à l’aide d’un
microphone portatif ou d’un sonomètre;
c) qu’elle inclut des recommandations supplémentaires qui étaient précédemment contenues dans
4)
l’ISO 140-14 .
NOTE Les méthodes d’essai de contrôle des mesurages in situ de l’isolation des bruits aériens, des bruits
d’impacts et des bruits de façades sont décrites dans l’ISO 10052.
Deux sources d’impacts sont décrites: la machine à chocs et la balle en caoutchouc. Ces sources d’impacts
ne reproduisent pas exactement tous les types possibles d’impacts réels sur les sols ou escaliers à
l’intérieur des bâtiments.
La machine à chocs peut être utilisée pour évaluer toute une variété d’impacts légers et durs tels que
des pas de personnes marchant avec des talons durs ou des chutes d’objets. Un indice unique peut être
calculé à l’aide des méthodes d’évaluation spécifiées dans l’ISO 717-2. Cet indice unique relie l’isolation
des bruits d’impacts mesurée au moyen de la machine à chocs à une évaluation subjective des impacts
généraux dans les locaux à usage d’habitation qui se produisent sur les sols ou escaliers à l’intérieur d’un
bâtiment. La machine à chocs est également bien adaptée pour prédire l’isolation des bruits d’impacts
selon l’ISO 12354-2. Ces deux aspects facilitent la spécification de l’isolation des bruits d’impacts dans
les exigences nationales relatives à la construction, en utilisant seulement la machine à chocs comme
source d’impacts pour les mesurages.
La balle en caoutchouc peut être utilisée pour évaluer les impacts lourds et souples, tels que des
personnes marchant pieds nus ou des enfants qui sautent, ainsi que pour quantifier les valeurs absolues
pouvant être liées aux perturbations humaines en termes de niveau de pression acoustique maximal
pondéré en temps rapide.
1) Retirée.
2) Retirée.
3) Retirée.
4) Retirée.
vi © ISO 2020 – Tous droits réservés
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NORME INTERNATIONALE ISO 16283-2:2020(F)
Acoustique — Mesurage in situ de l'isolation acoustique
des bâtiments et des éléments de construction —
Partie 2:
Isolation des bruits d'impacts
1 Domaine d’application
Le présent document spécifie les modes opératoires permettant de déterminer l’isolation des bruits
d’impacts à l’aide de mesurages de la pression acoustique avec une source d’impacts agissant sur un
sol ou sur un escalier à l’intérieur d’un bâtiment. Ces modes opératoires s’appliquent aux pièces dont le
3 3
volume est compris entre 10 m et 250 m et dont la fréquence est comprise entre 50 Hz et 5 000 Hz.
Les résultats des essais peuvent être utilisés pour quantifier, évaluer et comparer l’isolation des bruits
d’impacts dans des pièces non meublées ou meublées où le champ acoustique peut, ou ne peut pas, être
assimilé à un champ diffus.
2 Références normatives
Les documents suivants sont cités dans le texte de sorte qu’ils constituent, pour tout ou partie de leur
contenu, des exigences du présent document. Pour les références datées, seule l’édition citée s’applique.
Pour les références non datées, la dernière édition du document de référence s’applique (y compris les
éventuels amendements).
ISO 3382-2, Acoustique — Mesurage des paramètres acoustiques des salles — Partie 2: Durée de
réverbération des salles ordinaires
ISO 12999-1, Acoustique — Détermination et application des incertitudes de mesure dans l'acoustique des
bâtiments — Partie 1: Isolation acoustique
ISO 18233, Acoustique — Application de nouvelles méthodes de mesurage dans l'acoustique des bâtiments
et des salles
ISO/IEC 17025, Exigences générales concernant la compétence des laboratoires d'étalonnages et d'essais
IEC 60942, Électroacoustique — Calibreurs acoustiques
IEC 61183, Électroacoustique — Étalonnage des sonomètres sous incidence aléatoire et en champ diffus
IEC 61260 (toutes les parties), Électroacoustique — Filtres de bande d’octave et de bande d’une fraction
d’octave
IEC 61672-1, Électroacoustique — Sonomètres — Partie 1: Spécifications
3 Termes et définitions
Pour les besoins du présent document, les termes et définitions suivants s’appliquent.
L’ISO et l’IEC tiennent à jour des bases de données terminologiques destinées à être utilisées en
normalisation, consultables aux adresses suivantes:
— ISO Online browsing platform: disponible à l’adresse httpss:// www .iso .org/ obp;
— IEC Electropedia: disponible à l’adresse http:// www .electropedia .org/ .
© ISO 2020 – Tous droits réservés 1
---------------------- Page: 7 ----------------------
ISO 16283-2:2020(F)
3.1
niveau moyen de pression acoustique des bruits d’impacts dans une salle (moyenne énergétique)
L
i
dix fois le logarithme décimal du rapport de la moyenne spatio-temporelle des carrés des pressions
acoustiques au carré de la pression acoustique de référence, la source d’impacts étant la machine à
chocs et la moyenne spatiale étant comprise dans la zone centrale de la salle à l’exception des zones où
le champ proche des limites (parois, etc.) a une influence notable
Note 1 à l'article: L est exprimé en décibels (dB).
i
3.2
niveau de pression acoustique des bruits d’impacts dans les coins d’une salle
L
i,Corner
dix fois le logarithme décimal du rapport de la moyenne temporelle maximale des carrés des pressions
acoustiques issus de l’ensemble des mesurages dans les coins au carré de la pression acoustique de
référence pour la gamme des basses fréquences (bandes de tiers d’octave de 50 Hz, de 63 Hz et de
80 Hz), la source d’impacts étant la machine à chocs
Note 1 à l'article: L est exprimé en décibels (dB).
i,Corner
3.3
niveau moyen de pression acoustique basse fréquence des bruits d’impacts dans une salle
(moyenne énergétique)
L
i,LF
dix fois le logarithme décimal du rapport de la moyenne spatio-temporelle des carrés des pressions
acoustiques au carré de la pression acoustique de référence dans la gamme des basses fréquences
(bandes de tiers d’octave de 50 Hz, de 63 Hz et de 80 Hz), la source d’impacts étant la machine à chocs
et la moyenne spatiale étant une moyenne pondérée calculée à l’aide des coins de la pièce où les niveaux
de pression acoustique sont les plus élevés et de la zone centrale de la salle à l’exception des zones où le
champ proche des limites (parois, etc.) a une influence notable
Note 1 à l'article: L est exprimé en décibels (dB).
i,LF
Note 2 à l'article: L est une estimation du niveau moyen de pression acoustique (moyenne énergétique) pour le
i,LF
volume de la pièce entière.
3.4
niveau moyen de pression acoustique maximale des bruits d’impacts dans une salle (moyenne
énergétique)
L
i,Fmax
dix fois le logarithme décimal du rapport de la moyenne spatiale des carrés des pressions acoustiques
maximales avec pondération de temps rapide au carré de la pression acoustique de référence, la source
d’impacts étant la balle en caoutchouc et la moyenne spatiale étant comprise dans la zone centrale de la
salle à l’exception des zones où le champ proche des limites (parois, etc.) a une influence notable
Note 1 à l'article: L est exprimé en décibels (dB).
i,Fmax
3.5
durée de réverbération
T
durée nécessaire pour obtenir une diminution du niveau de pression acoustique dans une pièce de
60 dB après extinction de la source sonore
Note 1 à l'article: T est exprimée en secondes (s).
3.6
niveau du bruit de fond
niveau de pression acoustique mesuré dans la salle de réception provenant de toutes les sources à
l’exception de la source d’impacts
2 © ISO 2020 – Tous droits réservés
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ISO 16283-2:2020(F)
3.7
microphone fixe
microphone fixé dans l’espace à l’aide d’un dispositif tel qu’un trépied, afin de le stabiliser
3.8
microphone à mouvement continu mécanisé
microphone qui se déplace mécaniquement en cercle à une vitesse angulaire approximativement
constante, ou qui glisse mécaniquement le long d’une trajectoire circulaire où l’angle de rotation autour
d’un axe fixe est compris entre 270° et 360°
3.9
microphone à déplacement manuel
microphone fixé à un sonomètre portatif ou à une perche qui est déplacé par un opérateur humain le
long d’une trajectoire définie
3.10
microphone tenu manuellement
microphone fixé à un sonomètre portatif ou à une perche tenu(e) à la main par un opérateur humain
en une position fixe et à une distance du tronc du corps de l’opérateur supérieure ou égale à une
longueur de bras
3.11
sol
surface totale du sol ou de l’escalier qui est excitée par la source d’impacts
Note 1 à l'article: Dans le cas de deux salles disposées verticalement ou horizontalement en quinconce, la surface
totale du sol de séparation n’est pas visible depuis les deux côtés du sol. Il est donc nécessaire de définir le sol
comme la surface totale.
3.12
sol commun
partie du sol ou de l’escalier qui est commune à la salle dans laquelle la source d’impacts est utilisée et
à la salle de réception
3.13
niveau standardisé de pression acoustique des bruits d’impacts
L′
nT
niveau moyen de pression acoustique des bruits d’impacts (moyenne énergétique), L (3.1), diminué d’un
i
terme de correction exprimé en décibels, égal à dix fois le logarithme décimal du rapport de la valeur de
mesure de la durée de réverbération, T (3.5), à la durée de réverbération de référence, T ; il est calculé
0
d’après la Formule (1) lorsque la source d’impacts est la machine à chocs:
T
′
LL=−10lg (1)
niT
T
0
où
T est la durée de réverbération dans la salle de réception, en s;
T est la durée de réverbération de réfé
...
INTERNATIONAL ISO
STANDARD 16283-2
Third edition
Acoustics — Field measurement of
sound insulation in buildings and of
building elements —
Part 2:
Impact sound insulation
Acoustique — Mesurage in situ de l'isolation acoustique des
bâtiments et des éléments de construction —
Partie 2: Isolation des bruits d'impacts
PROOF/ÉPREUVE
Reference number
ISO 16283-2:2020(E)
©
ISO 2020
---------------------- Page: 1 ----------------------
ISO 16283-2:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii PROOF/ÉPREUVE © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 16283-2:2020(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Instrumentation . 5
4.1 General . 5
4.2 Calibration . 5
4.3 Verification . 5
5 Frequency range . 6
5.1 Tapping machine as the impact source . 6
5.2 Rubber ball as the impact source . 6
6 General . 6
7 Default procedure for sound pressure level measurement . 7
7.1 General . 7
7.2 Generation of sound field . 7
7.2.1 General. 7
7.2.2 Impact source positions for the tapping machine as impact source . 7
7.2.3 Impact source positions for the rubber ball as impact source . 8
7.3 Fixed microphone positions for the tapping machine or rubber ball as impact source . 8
7.3.1 General. 8
7.3.2 Number of measurements . 8
7.3.3 Tapping machine operated at more than one position . 8
7.3.4 Rubber ball operated at more than one position . 9
7.4 Mechanized continuously moving microphone for the tapping machine as impact source 9
7.4.1 General. 9
7.4.2 Number of measurements .10
7.4.3 Tapping machine operated at more than one position .10
7.5 Manually scanned microphone for the tapping machine as impact source .10
7.5.1 General.10
7.5.2 Number of measurements .10
7.5.3 Tapping machine operated at more than one position .10
7.5.4 Circle .10
7.5.5 Helix .10
7.5.6 Cylindrical-type . .11
7.5.7 Three semicircles .11
7.6 Minimum distances for microphone positions .12
7.7 Averaging times for the tapping machine as impact source .12
7.7.1 Fixed microphone positions.12
7.7.2 Mechanized continuously moving microphone .13
7.7.3 Manually scanned microphone .13
7.8 Calculation of energy-average sound pressure levels .13
7.8.1 Fixed microphone positions for the tapping machine as impact source .13
7.8.2 Mechanized continuously moving microphone and manually scanned
microphone for the tapping machine as impact source .13
7.8.3 Fixed microphone positions for the rubber ball as impact source .14
8 Low-frequency procedure for sound pressure level measurement for the tapping
machine as impact source .14
8.1 General .14
8.2 Generation of sound field .14
8.2.1 General.14
© ISO 2020 – All rights reserved PROOF/ÉPREUVE iii
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ISO 16283-2:2020(E)
8.2.2 Impact source positions .14
8.3 Microphone positions .14
8.4 Averaging time .15
8.5 Calculation of low-frequency energy-average impact sound pressure levels .15
9 Background noise (default and low-frequency procedure) .16
9.1 General .16
9.2 Correction to the signal level for background noise .17
10 Reverberation time in the receiving room (default and low-frequency procedure) .18
10.1 General .18
10.2 Generation of sound field .18
10.3 Default procedure .18
10.4 Low-frequency procedure .18
10.5 Interrupted noise method .19
10.6 Integrated impulse response method .19
11 Conversion to octave bands .19
12 Expression of results .20
13 Uncertainty .20
14 Test report .20
Annex A (normative) Impact sources .21
Annex B (normative) Requirements for loudspeakers used for reverberation time
measurements .27
Annex C (informative) Forms for the expression of results .28
Annex D (informative) Additional guidance .32
Annex E (informative) Horizontal measurements — Examples of suitable impact source
and microphone positions.36
Annex F (informative) Vertical measurements — Examples of suitable impact source and
microphone positions .40
Bibliography .43
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ISO 16283-2:2020(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 2,
Building acoustics, in collaboration with the European Committee for Standardization (CEN) Technical
Committee CEN/TC 126, Acoustic properties of building elements and of buildings, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 16283-2:2018), which has been
technically revised.
The main changes compared to the previous edition are as follows:
a) Clause 6, Note 3 removed;
b) in the helical path (7.5.5) distance of the microphone position to the ceiling changed to
minimum 0,5 m;
c) L′ added to the expression of results and to Figure C.3.
iA,Fmax,V,T
A list of all parts in the ISO 16283 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
© ISO 2020 – All rights reserved PROOF/ÉPREUVE v
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ISO 16283-2:2020(E)
Introduction
ISO 16283 (all parts) describes procedures for field measurements of sound insulation in buildings.
Airborne, impact and façade sound insulation are described in ISO 16283-1, this document (ISO 16283-2)
and ISO 16283-3, respectively.
1) 2)
Field sound insulation measurements that were described previously in ISO 140-4 , ISO 140-5 , and
3)
ISO 140-7 were a) primarily intended for measurements where the sound field could be considered
to be diffuse, and b) not explicit as to whether operators could be present in the rooms during the
measurement. ISO 16283 (all parts) differs from ISO 140-4, ISO 140-5, and ISO 140-7 in that:
a) it applies to rooms in which the sound field may or may not approximate to a diffuse field;
b) it clarifies how operators can measure the sound field using a hand-held microphone or sound
level meter;
4)
c) it includes additional guidance that was previously contained in ISO 140-14 .
NOTE Survey test methods for field measurements of airborne and impact sound insulation are dealt with in
ISO 10052.
Two impact sources are described: the tapping machine and the rubber ball. These impact sources do
not exactly replicate all possible types of real impacts on floors or stairs in buildings.
The tapping machine can be used to assess a variety of light, hard impacts such as footsteps from
walkers wearing hard-heeled footwear or dropped objects. A single number quantity can be calculated
using the rating procedures in ISO 717-2. This single number quantity links the measured impact
sound insulation using the tapping machine to subjective assessment of general impacts in dwellings
that occur on floors or stairs in a building. The tapping machine is also well-suited to the prediction
of impact sound insulation using ISO 12354-2. These two aspects facilitate the specification of impact
sound insulation in national building requirements using only measurements with the tapping machine
as an impact source.
The rubber ball can be used to assess heavy, soft impacts such as from walkers in bare feet or children
jumping, as well as quantifying absolute values that can be related to human disturbance in terms
of a Fast time-weighted maximum sound pressure level. Calculation procedures for a single number
quantity do not currently exist in an International Standard.
1) Withdrawn.
2) Withdrawn.
3) Withdrawn.
4) Withdrawn.
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INTERNATIONAL STANDARD ISO 16283-2:2020(E)
Acoustics — Field measurement of sound insulation in
buildings and of building elements —
Part 2:
Impact sound insulation
1 Scope
This document specifies procedures to determine the impact sound insulation using sound pressure
measurements with an impact source operating on a floor or stairs in a building. These procedures are
3 3
intended for room volumes in the range from 10 m to 250 m in the frequency range from 50 Hz to
5 000 Hz. The test results can be used to quantify, assess and compare the impact sound insulation in
unfurnished or furnished rooms where the sound field may or may not approximate to a diffuse field.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3382-2, Acoustics — Measurement of room acoustic parameters — Part 2: Reverberation time in
ordinary rooms
ISO 12999-1, Acoustics — Determination and application of measurement uncertainties in building
acoustics — Part 1: Sound insulation
ISO 18233, Acoustics — Application of new measurement methods in building and room acoustics
ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories
IEC 60942, Electroacoustics — Sound calibrators
IEC 61183, Electroacoustics — Random-incidence and diffuse-field calibration of sound level meters
IEC 61260 (all parts), Electroacoustics — Octave-band and fractional-octave-band filters
IEC 61672-1, Electroacoustics — Sound level meters — Part 1: Specifications
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
© ISO 2020 – All rights reserved PROOF/ÉPREUVE 1
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ISO 16283-2:2020(E)
3.1
energy-average impact sound pressure level in a room
L
i
ten times the common logarithm of the ratio of the space and time average of the squared sound
pressure to the square of the reference sound pressure where the impact source is the tapping machine
and the space average is taken over the central zone of the room where nearfield radiation from the
room boundaries has negligible influence
Note 1 to entry: L is expressed in decibels (dB).
i
3.2
corner impact sound pressure level in a room
L
i,Corner
ten times the common logarithm of the ratio of the highest time average squared sound pressure from
the set of corner measurements to the square of the reference sound pressure for the low-frequency
range (50 Hz, 63 Hz and 80 Hz one-third octave bands) where the impact source is the tapping machine
Note 1 to entry: L is expressed in decibels (dB).
i,Corner
3.3
low-frequency energy-average impact sound pressure level in a room
L
i,LF
ten times the common logarithm of the ratio of the space and time average of the squared sound
pressure to the square of the reference sound pressure in the low-frequency range (50 Hz, 63 Hz and
80 Hz one-third octave bands) where the impact source is the tapping machine and the space average
is a weighted average that is calculated using the room corners where the sound pressure levels are
highest and the central zone of the room where nearfield radiation from the room boundaries has
negligible influence
Note 1 to entry: L is expressed in decibels (dB).
i,LF
Note 2 to entry: L is an estimate of the energy-average sound pressure level for the entire room volume.
i,LF
3.4
energy-average maximum impact sound pressure level in a room
L
i,Fmax
ten times the common logarithm of the ratio of the space average of the squared maximum sound
pressure with Fast time weighting to the square of the reference sound pressure where the impact
source is the rubber ball and the space average is taken over the central zone of the room where
nearfield radiation from the room boundaries has negligible influence
Note 1 to entry: L is expressed in decibels (dB).
i,Fmax
3.5
reverberation time
T
time required for the sound pressure level in a room to decrease by 60 dB after the sound source
has stopped
Note 1 to entry: T is expressed in seconds (s).
3.6
background noise level
measured sound pressure level in the receiving room from all sources except the impact source
3.7
fixed microphone
microphone that is fixed in space by using a device such as a tripod so that it is stationary
2 PROOF/ÉPREUVE © ISO 2020 – All rights reserved
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ISO 16283-2:2020(E)
3.8
mechanized continuously moving microphone
microphone that is mechanically moved with approximately constant angular speed in a circle, or is
mechanically swept along a circular path where the angle of rotation about a fixed axis is between 270°
and 360°
3.9
manually scanned microphone
microphone attached to a hand-held sound level meter or an extension rod that is moved by a human
operator along a prescribed path
3.10
manually held microphone
microphone attached to a hand-held sound level meter or a rod that is hand-held at a fixed position by a
human operator at a distance of at least an arm’s length from the trunk of the operator’s body
3.11
partition
total surface of the floor or stair which is excited by the impact source
Note 1 to entry: For two rooms which are staggered vertically or horizontally, the total surface of the separating
partition is not visible from both sides of the partition; hence it is necessary to define the partition as the total
surface.
3.12
common partition
part of the floor or stair that is common to both the room in which the impact source is used and the
receiving room
3.13
standardized impact sound pressure level
L′
nT
energy-average impact sound pressure level (L ) (3.1), reduced by a correction term that is given in
i
decibels, being ten times the common logarithm of the ratio of the measured reverberation time (T)
(3.5), to the reference reverberation time, T , which is calculated using Formula (1) when the impact
0
source is the tapping machine:
T
′
LL=−10lg (1)
niT
T
0
where
T is the reverberation time in the receiving room, in s;
T is the reference reverberation time, in s (for dwellings, T = 0,5 s).
0 0
Note 1 to entry: L′ is expressed in decibels (dB).
nT
Note 2 to entry: The impact sound pressure level is referenced to a reverberation time (3.5) of 0,5 s because, in
dwellings with furniture, the reverberation time has been found to be reasonably independent of volume and
frequency and to be approximately equal to 0,5 s.
Note 3 to entry: L′ provides a straightforward link to the subjective impression of impact sound insulation.
nT
© ISO 2020 – All rights reserved PROOF/ÉPREUVE 3
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ISO 16283-2:2020(E)
3.14
equivalent absorption area
A
hypothetical area of a totally absorbing surface without diffraction effects which, if it were the only
absorbing element in the room, would give the same reverberation time (3.5) as the room under
consideration and is calculated using Sabine's formula in Formula (2):
01, 6V
A= (2)
T
where
3
V is the receiving room volume, in m ;
T is the reverberation time in the receiving room, in s.
2
Note 1 to entry: A is expressed in square metres (m ).
3.15
normalized impact sound pressure level
L′
n
energy-average impact sound pressure level (L ) (3.1), increased by a correction term that is given
i
in decibels, being ten times the common logarithm of the ratio between the measured equivalent
absorption area (A) (3.14), of the receiving room and the reference equivalent absorption area, A , which
0
is calculated using Formula (3) when the impact source is the tapping machine:
A
′
LL=+10lg (3)
ni
A
0
where
2
A is the equivalent absorption area in the receiving room, in m ;
2 2
A is the reference equivalent absorption area, in m (for dwellings, A = 10 m ).
0 0
Note 1 to entry: L′ is expressed in decibels (dB).
n
3.16
standardized maximum impact sound pressure level
L′
i,Fmax,V,T
energy-average maximum impact sound pressure level (L ) (3.4), increased by a correction term for
i,Fmax
room volume and reduced by a correction term for reverberation time and Fast time weighting, which
is calculated using Formulae (4), (5) and (6) when the impact source is the rubber ball:
−1
−−1
−1
−1 −−1 C
()
()1−C
1−C
V CC−
0
′
LL=+10lg −10lg (4)
iF,amix,VT, ,Fmax
−1
−1
V −1 −1
1−C
−−1 C
0 1−C ()
()
0 0
CC−
0 0
T
0
C = (5)
0
1,7275
T
C= (6)
1,7275
where
4 PROOF/ÉPREUVE © ISO 2020 – All rights reserved
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ISO 16283-2:2020(E)
T is the reverberation time in the receiving room, in s;
T is the reference reverberation time, in s (for dwellings, T = 0,5 s);
0 0
3
V is the receiving room volume, in m ;
3 3
V is the reference receiving room volume, in m (for dwellings, V = 50 m ).
0 0
Note 1 to entry: L′ is expressed in decibels (dB).
i,Fmax,V,T
Note 2 to entry: Background inform
...
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