EN ISO 11904-1:2002
(Main)Acoustics - Determination of sound immission from sound sources placed close to the ear - Part 1: Technique using a microphone in a real ear (MIRE technique) (ISO 11904-1:2002)
Acoustics - Determination of sound immission from sound sources placed close to the ear - Part 1: Technique using a microphone in a real ear (MIRE technique) (ISO 11904-1:2002)
ISO 11904-1:2002 specifies basic framework measurement methods for sound immissions from sound sources placed close to the ear. These measurements are carried out with miniature or probe microphones inserted in the ear canals of human subjects. The measured values are subsequently converted into corresponding free-field or diffuse-field levels. The results can be given as free-field related or diffuse-field related equivalent continuous A-weighted sound pressure levels. The technique is denoted the microphone-in-real-ear technique (MIRE technique).
ISO 11904-1:2002 is applicable to exposure from sources close to the ear, for example during equipment tests or at the workplace by earphones or hearing protectors with audio communication facilities.
ISO 11904-1:2002 is applicable in the frequency range from 20 Hz to 16 000 Hz.
Akustik - Bestimmung der Schallimmission von ohrnahen Schallquellen - Teil 1: Verfahren mit Mikrofonen in menschlichen Ohren (MIRE-Verfahren) (ISO 11904-1:2002)
Dieser Teil von ISO 11904 legt Rahmenmessverfahren für die Messung von Schallimmissionsmessungen durch ohrnahe Schallquellen fest. Diese Messungen werden mit Miniatur- oder Sondenmikrofonen in den Gehörgängen von Versuchspersonen durchgeführt. Die gemessenen Werte werden anschließend in entsprechende Freifeld- bzw. Diffusfeldpegel umgerechnet. Die Ergebnisse können werden als freifeldbezogene bzw. diffusfeldbezogene A-bewertete äquivalente Dauerschalldruckpegel angegeben werden. Das Verfahren wird als MIRE-Verfahren bezeichnet (MIRE = Microphone In Real Ear / Mikrofon im menschlichen Ohr).
Dieser Teil von ISO 11904 ist anwendbar auf die Exposition durch ohrnahe Schallquellen, beispielsweise bei Geräteprüfungen oder am Arbeitsplatz durch Ohrhörer oder Gehörschützer mit Sprachübertragungssystemen.
Dieser Teil von ISO 11904 ist anwendbar für den Frequenzbereich von 20 Hz bis 16 000 Hz.
Acoustique - Détermination de l'exposition sonore due à des sources sonores placées à proximité de l'oreille - Partie 1: Technique du microphone placé dans une oreille réelle (technique MIRE) (ISO 11904-1:2002)
L'ISO 11904-1:2002 spécifie des méthodes de mesure générales d'émissions sonores des sources de bruit placées à proximité de l'oreille. Ces mesurages sont effectués au moyen de microphones miniatures ou de sondes microphoniques insérés dans les conduits auditifs de sujets humains. Les valeurs mesurées sont ensuite converties en niveaux ramenés au champ libre ou au champ diffus correspondants. Les résultats sont donnés sous forme de niveaux de pression acoustique continus équivalents pondérés A relatifs au champ libre ou au champ diffus. La technique est appelée technique du microphone dans l'oreille réelle (technique MIRE).
L'ISO 11904-1:2002 peut s'appliquer à l'exposition à des sources placées à proximité de l'oreille, par exemple, au cours d'essais d'équipements ou au poste de travail, avec par exemple des écouteurs ou des protecteurs individuels contre le bruit munis de moyens de communication audio.
L'ISO 11904-1:2002 s'applique dans la gamme de fréquences comprises entre 20 Hz et 16 000 Hz.
Akustika - Določanje imisije zvoka od zvočnih virov v neposredni bližini ušesa – 1. del: Metoda z mikrofonom v ušesu (metoda MIRE ) (ISO 11904-1:2002)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2004
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Acoustics - Determination of sound immission from sound sources placed close to the
ear - Part 1: Technique using a microphone in a real ear (MIRE technique) (ISO 11904-
1:2002)
Akustik - Bestimmung der Schallimmission von ohrnahen Schallquellen - Teil 1:
Verfahren mit Mikrofonen in menschlichen Ohren (MIRE-Verfahren) (ISO 11904-1:2002)
Acoustique - Détermination de l'exposition sonore due a des sources sonores placées a
proximité de l'oreille - Partie 1: Technique du microphone placé dans une oreille réelle
(technique MIRE) (ISO 11904-1:2002)
Ta slovenski standard je istoveten z: EN ISO 11904-1:2002
ICS:
17.140.01 $NXVWLþQDPHUMHQMDLQ Acoustic measurements and
EODåHQMHKUXSDQDVSORãQR noise abatement in general
33.160.50 Pribor Accessories
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 11904-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2002
ICS 17.140.01
English version
Acoustics - Determination of sound immission from sound
sources placed close to the ear - Part 1: Technique using a
microphone in a real ear (MIRE technique) (ISO 11904-1:2002)
Acoustique - Détermination de l'exposition sonore due à Akustik - Bestimmung der Schallimmission von ohrnahen
des sources sonores placées à proximité de l'oreille - Partie Schallquellen - Teil 1: Verfahren mit Mikrofonen in
1: Technique du microphone placé dans une oreille réelle menschlichen Ohren (MIRE-Verfahren) (ISO 11904-1:2002)
(technique MIRE) (ISO 11904-1:2002)
This European Standard was approved by CEN on 29 August 2002.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
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© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11904-1:2002 E
worldwide for CEN national Members.
CORRECTED 2002-11-13
Foreword
This document (EN ISO 11904-1:2002) has been prepared by Technical Committee ISO/TC 43
"Acoustic " in collaboration with Technical Committee CEN/TC 211 "Acoustics", the secretariat of
which is held by DS.
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by April 2003, and conflicting national
standards shall be withdrawn at the latest by April 2003.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,
Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 11904-1:2002 has been approved by CEN as EN ISO 11904-1:2002 without any
modifications.
NOTE Normative references to International Standards are listed in Annex ZA (normative).
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE Where an International Publication has been modified by common modifications, indicated
by (mod.), the relevant EN/HD applies.
Publication Year Title EN/HD Year
ISO 8253-2 1992 Acoustics - Audiometric test methods - Part EN ISO 8253-2 1998
2: Sound field audiometry with pure tone and
narrow-band test signals
INTERNATIONAL ISO
STANDARD 11904-1
First edition
2002-10-01
Acoustics — Determination of sound
immission from sound sources placed
close to the ear —
Part 1:
Technique using a microphone in a real ear
(MIRE technique)
Acoustique — Détermination de l'exposition sonore due à des sources
sonores placées à proximité de l'oreille —
Partie 1: Technique du microphone placé dans une oreille réelle (technique
MIRE)
Reference number
ISO 11904-1:2002(E)
©
ISO 2002
ISO 11904-1:2002(E)
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ISO 11904-1:2002(E)
Contents Page
Foreword . iv
Introduction. v
1 Scope. 1
2 Normative references. 1
3 Terms and definitions. 2
4 Measurement principle. 3
5 Instrumentation. 3
5.1 Ear canal microphone. 3
5.2 Reference field microphone. 4
5.3 Check of calibration. 4
5.4 Filters. 4
6 Subjects. 4
7 Use of ear canal microphone . 4
7.1 Choice of ear canal measurement position. 4
7.2 Mounting of microphones . 6
7.3 Safety. 6
8 Determination of free-field or diffuse-field related equivalent continuous A-weighted sound
pressure level . 6
8.1 Measurement of ear canal sound pressure level. 6
8.2 Conversion to free-field or diffuse-field related sound pressure level. 7
8.3 A-weighting and summation. 7
9 Free-field and diffuse-field frequency responses for selected ear canal measurement positions . 7
10 Determination of free-field or diffuse-field frequency responses. 7
10.1 General. 7
10.2 Measurement principle. 9
10.3 Establishment of a free reference sound field . 9
10.4 Establishment of a quasi-free reference sound field . 9
10.5 Establishment of a diffuse reference sound field. 9
10.6 Measurement of the reference sound field. 9
10.7 Measurement of ear canal sound pressure level in reference sound field . 9
10.8 Determination of free-field or diffuse-field frequency response.10
10.9 Simplifications in specific cases . 10
10.10 Optional check of the measurement arrangement . 10
11 Test report. 10
Annex A (informative) Example of sources of measurement uncertainty . 11
Annex B (informative) Example of an uncertainty analysis . 17
Bibliography. 19
ISO 11904-1:2002(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
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Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
The main task of technical committees is to prepare International Standards. Draft International Standards adopted
by the technical committees are circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 11904-1 was prepared by Technical Committee ISO/TC 43, Acoustics.
ISO 11904 consists of the following parts, under the general title Acoustics — Determination of sound immission
from sound sources placed close to the ear:
Part 1:
...
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