EN 13819-3:2019/FprA1
(Amendment)Hearing protectors - Testing - Part 3: Supplementary acoustic test methods
Hearing protectors - Testing - Part 3: Supplementary acoustic test methods
This document specifies supplementary acoustic test methods for hearing protectors with additional electronic functions. The purpose of these tests is to enable assessment of the hearing protector performance as specified in the appropriate product standards.
Gehörschützer - Prüfung - Teil 3: Zusätzliche akustische Prüfverfahren
No scope available
Protecteurs individuels contre le bruit - Essais - Partie 3 : Méthodes d'essais acoustiques supplémentaires
Varovala sluha - Preskušanje - 3. del: Dodatne akustične preskusne metode - Dopolnilo A1
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13819-3:2020/oprA1:2022
01-januar-2022
Varovala sluha - Preskušanje - 3. del: Dodatne akustične preskusne metode -
Dopolnilo A1
Hearing protectors - Testing - Part 3: Supplementary acoustic test methods
Gehörschützer - Prüfung - Teil 3: Zusätzliche akustische Prüfverfahren
Protecteurs individuels contre le bruit - Essais - Partie 3 : Méthodes d'essais
acoustiques supplémentaires
Ta slovenski standard je istoveten z: EN 13819-3:2019/prA1
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
SIST EN 13819-3:2020/oprA1:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
SIST EN 13819-3:2020/oprA1:2022
SIST EN 13819-3:2020/oprA1:2022
DRAFT
EUROPEAN STANDARD
EN 13819-3:2019
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
November 2021
ICS 13.340.20
English Version
Hearing protectors - Testing - Part 3: Supplementary
acoustic test methods
Protecteurs individuels contre le bruit - Essais - Partie Gehörschützer - Prüfung - Teil 3: Zusätzliche
3 : Méthodes d'essais acoustiques supplémentaires akustische Prüfverfahren
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 159.
This draft amendment A1, if approved, will modify the European Standard EN 13819-3:2019. If this draft becomes an
amendment, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
inclusion of this amendment into the relevant national standard without any alteration.
This draft amendment was established by CEN 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 CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13819-3:2019/prA1:2021 E
worldwide for CEN national Members.
SIST EN 13819-3:2020/oprA1:2022
EN 13819-3:2019/prA1:2021 (E)
Contents Page
European foreword . 3
1 Modification to Clause 2, Normative references . 4
2 Modification to Clause 7, Test procedures . 4
3 Modification to Table A.1 — Overview of supplementary acoustic test methods . 10
4 Modification to Clause C.1, Calculation example for level-dependent earmuff. 10
5 Modification to Bibliography . 11
SIST EN 13819-3:2020/oprA1:2022
EN 13819-3:2019/prA1:2021 (E)
European foreword
This document (EN 13819-3:2019/prA1:2021) has been prepared by Technical Committee CEN/TC 159
“Hearing protectors”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
SIST EN 13819-3:2020/oprA1:2022
EN 13819-3:2019/prA1:2021 (E)
1 Modification to Clause 2, Normative references
Replace references
“EN 352-2:2002, Hearing protectors — General requirements — Part 2: Earplugs
EN 352-8:— , Hearing protectors — Safety requirements — Part 8: Entertainment audio earmuffs
EN 352-10:— , Hearing protectors — Safety requirements — Part 10: Entertainment audio earplugs”
with the following:
“EN 352-2:2020, Hearing protectors — General requirements — Part 2: Earplugs
EN 352-8:2020, Hearing protectors — Safety requirements — Part 8: Entertainment audio earmuffs
EN 352-10:2020, Hearing protectors — Safety requirements — Part 10: Entertainment audio earplugs”
2 Modification to Clause 7, Test procedures
Replace in second paragraph of 7.2.3.1
“EN 352-2:2002”
with the following:
“EN 352-2:2020”.
Replace
“7.4 Hearing protectors with FM radio receiver”
with the following:
“7.4 Hearing protectors with FM radio receiver or DAB/DAB+ radio receiver”
Replace
“7.4.2 Earmuff with FM radio receiver”
with the following:
“7.4.2 Earmuff with FM radio receiver or DAB/DAB+ radio receiver”
Insert new clause title under clause “7.4.2.1 Test method” before text:
“7.4.2.1.1 Test method for earmuff with FM radio receiver”
SIST EN 13819-3:2020/oprA1:2022
EN 13819-3:2019/prA1:2021 (E)
Add the following new 7.4.2.1.2 before “7.4.2.2 Calculation procedure”:
“7.4.2.1.2 Test method for earmuff with DAB/DAB+ radio receiver
The A-weighted equivalent diffuse-field related SPL is measured using the entertainment audio test
signal (6.5), with the entertainment audio system on and operated at maximum settings.
For the generation of the DAB/DAB+ signal an appropriate signal generator shall be used which support
the G.703 Ensemble Transport Interface Format (file format: *.eti).
NOTE 1 The *.eti file format is supported by various equipment for audio broadcasting.
An entertainment audio test signal shall be generated in wav-format and with a sufficient duration. To
maximize the energy and still have dynamic headroom, the rms value of the signal shall be set to 10 dB
less than the rms value of a 250 Hz sinusoidal test signal with full dynamic range (−10 dB FS).
The signal is then encoded to MPEG-1 Audio Layer 2 format for DAB and HE AAC-V2 format for DAB+.
The highest possible bitrate shall be used. The resulting two-bit streams are then converted to the
Ensemble Transport Interface Format and stored as an *.eti file.
NOTE 2 MPEG and HE AAC-V2 codecs are lossy codecs.
The sound output level of the earmuff shall be measured using the MIRE technique described in 5.4.
Four earmuffs and eight test subjects shall be used. Each of the four earmuff samples shall be tested on
two subjects. Measurements shall be taken on both ears. The measured levels shall be corrected for the
diffuse-field frequency response of the subject's ear canal to give the A-weighted diffuse-field related
SPL produced by the restoration facility.”
Replace
“7.4.3 Earplug with FM radio receiver”
with the following:
“7.4.3 Earplug with FM radio receiver or DAB/DAB+ radio receiver”
Insert new clause title under clause “7.4.3.1 Test method” before text:
“7.4.3.1.1 Test method for earplug with FM radio receiver”
Add the following new clause title 7.4.3.1.2 and text before clause “7.4.3.2 Calculation procedure”:
“7.4.3.1.2 Test method for earplug with DAB/DAB+ radio receiver
The A-weighted equivalent diffuse-field related SPL is measured using the entertainment audio test
signal (6.5), with the entertainment audio system on and operated at maximum settings.
For the generation of the DAB/DAB+ signal an appropriate signal generator shall be used which support
the G.703 Ensemble Transport Interface Format (file format: *.eti).
NOTE 1 The *.eti file format is supported by various equipment for audio broadcasting.
An entertainment audio test signal shall be generated in wav-format and with a sufficient duration. To
maximize the energy and still have dynamic headroom, the rms value of the signal shall be set to 10 dB
less than the rms value of a 250 Hz sinusoidal test signal with full dynamic range (−10 dB FS).
The signal is then encoded to MPEG-1 Audio Layer 2 format for DAB and HE AAC-V2 format for DAB+.
The highest possible bitrate shall be used. The resulting two-bit streams are then converted to the
Ensemble Transport Interface Format and stored as an *.eti file.
NOTE 2 MPEG and HE AAC-V2 codecs are lossy codecs.
SIST EN 13819-3:2020/oprA1:2022
EN 13819-3:2019/prA1:2021 (E)
An occluded-ear simulator described in 5.2 or a head simulator described in 5.3 shall be used.
All values shall be diffuse-field corrected. The diffuse-field frequency response in EN ISO 11904-2:2004,
Table 1 shall be used as diffuse-field related transfer function.
Eight earplugs shall be tested with related electronic units. That corresponds to eight or four products,
depending if made for one or two-ear use. In case where the manufacturer designed left and right
earplug in a different way (especially in terms of SPL effective to the ear), sixteen earplugs shall be
measured (eight right and eight left).”
Replace in first paragraph of 7.6.1.2.3
“EN 352-8:— ”
with the following:
“EN 352-8:2020”
Replace in first paragraph of 7.6.2.2.2
“EN 352-10:— ”
with the following:
“EN 352-10:2020”
Add the following new clauses and text after clause “7.6.2.4.2 Maximum SPL for entertainment audio
earplug” before Annex A:
“7.7 Hearing protectors with built-in two-way radio
7.7.1 Earmuff with built-in analogue frequency modulated two-way radio
7.7.1.1 General
This test method determines the A-weighted equivalent diffuse-field related SPL generated by earmuffs
for safety-related communication.
7.7.1.2 Test method
7.7.1.2.1 Measurement of the criterion level
The A-weighted diffuse-field related SPL is measured for an artificial speech signal (6.4) with the DUT
operated at maximum settings.
Four earmuffs and eight test subjects shall be used. Each of the four earmuff samples shall be worn by
two subjects. Measurements shall be taken on both ears according to MIRE technique described in 5.4.
A radio communication signal generator shall be used without pre-emphasis. The input voltage rms
level of the signal shall result in the maximum permissible frequency modulation. For 25 kHz channel
spacing modulation is set to 5 kHz and for 12,5 kHz channel spacing the modulation is set to 2,5 kHz.
The manufacturer shall state which of the channel spacing is used.
NOTE 1 There are no differences between PMR and LPD regarding the analogue FM modulation (12,5kHz
channel). The main differences are the transmitted power and the frequency band. LPD: frequency band
433/434 MHz and power 10 mW; PMR: frequency band 446 MHz and power 500 mW. Additional information on
PMR and LPD for two-way radio can be found in EN 303 405 V1.1.1 (2017-05) and EN 300 296 V2.1.1 (2016-03).
A speech signal shall be generated according to 6.4. To maximize the energy and still have dynamic
headroom, the rms value of the signal shall be set to 14 dB less than the rms value of a 1 000 Hz
sinusoidal test signal with full dynamic range (−14 dB FS).
NOTE 2 FS equals maximum frequency modulation.
SIST EN 13819-3:2020/oprA1:2022
EN 13819-3:2019/prA1:2021 (E)
The signal shall also be made available at lower levels in 5 dB steps at least down to −35 dB FS.
A receiving device for two-way radio signals (radio communication test instrument) shall be used to
verify that the signal is correctly transmitted. The user information of the radio communication test
instrument shall be consulted to setup the receiver correctly.
Start with an input signal level approximately equivalent to an A-weighted diffuse-field related SPL of
70 dB(A). Increase the input signal level in steps of 5 dB. Measure the A-weighted diffuse-field related
SPL for each input signal level, up to the level for which the A-weighted diffuse-field related SPL first
exceeds 85 dB(A). Follow this procedure for each subject, using the same input signal levels.
7.7.1.2.2 Measurement of the performance for high input levels
In order to assess the performance of the products for higher input levels, measurements shall be
performed on an ATF or on a suitably mounted occluded ear-simulator resulting in A-weighted
equivalent diffuse-field related SPL.
All samples shall be measured starting with the input signal that resulted in an A-weighted equivalent
diffuse-field related SPL of 70 dB(A) with the test subjects. The level shall be increased in 5 dB steps up
to an A-weighted diffuse-field related SPL of 120 dB(A), saturation of the signal or up to the maximum
input level.
7.7.1.3 Calculation procedure
7.7.1.3.1 Criterion level
The input signal level (Xi dB FS) for which the A-weighted equivalent diffuse-field related SPL is equal to
82 dB(A) shall be determined for all cups and subjects, by interpolation where necessary, and then the
mean input signal level (X + X + … + X )/16 and the standard deviation shall be calculated.
1 2 16
The criterion level is the mean input signal level in dB FS minus one standard deviation (L ).
7.7.1.3.2 High input level
Since the sound levels measured on the ATF or on a suitably mounted occluded-ear simulator will
typically not be identical to the MIRE results the curve shall be shifted to match the MIRE results for the
range where both curves overlap using the following procedure:
Calculate the mean over the results of the eight cups for each input level.
The mean curve of the values measured on the ATF or on a suitably mounted occluded-ear simulator
will probably not contain a data point with the level value of L , therefore determine this point by
interpolation.
Determine the difference in SPL between MIRE and ATF or a suitably mounted occluded-ear simulator
values at L .
Shift the whole ATF or suitably mounted occluded-ear simulator mean curve by this offset and combine
the two curves.
Determine from the combined mean SPL data the input levels that result in an SPL of 70 dB(A) up to the
maximum SPL measured in steps of 5 dB [70 dB(A), 75 dB(A), …].
7.7.1.4 Report — Criterion level and high input level
a) Report the A-weighted equi
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