Make Listening Safe EN50332-3, EN62368-1
WHO • Genève • 7 Feb 2018
Thomas LundConvenor TC108X/WG3
23rd of September, 2008
Extensive review after Noise at Work directive effective Feb 2006
2.5 - 10 million Europeans to develop HL because of PMPs
-> Commission decision of 23 June 2009
Sound Exposure Traumatic
Threatening
Safe
Commission Mandate
EU current status
EN50332-1
Static limitation of max electro-acoustic gain. No limitation on time.
Traumatic
Threatening
Safe
Test signal
Pop music
23.5 m2.5 m
EN 50332-1, EN 50332-2Also don’t work with ITU and EBU broadcast standards
EN 50332-1, EN 50332-2High “pressure” needed to get enough output
EU update Traumatic
Threatening
Safe
DoseWarning
EN50332-3EN62368-1
Dose warningand exposure limit,based on program
Traumatic
Threatening
Safe
EN50332-3EN62368-1
Dose warningand exposure limit,based on program
ExposureLimit
DoseWarning
EU update
-1: HRTF
Exposure Limit
Drop & Ok at 100%
100 dB SPL, 3 min
HRTF incl.
Mandatory warning for 80 dBA sound exposure level per week,i.e. 40 hours normalized.Gain drop until warning acknowledged
Sound Dose
Slowly Limited to 100 dBA integrated over 3 minutesShort-term Exposure Level
EN62368
i n d i v i d u a l
c o l l e c t i v e
interior
exterior
ITobjective
body & brainengineering
Isubjectivesensationemotions
WEintersubjective
languageculture
ITSinterobjective
systemgovernment
PMPinduced
HL
Greetings esteemed members of the WHO
From Bob LudwigMastering for McCartney, Springsteen, Bowie, Queen,Dire Straits, Stones, Madonna, Sinatra, Police, Eagles, Roxy Music, Coldplay, U2, AC/DC, Clapton etc. etc.
The art of music is one of the highest expressions of intelligence devised by human beings.
New ITU and EBU standards finally free us from having to needlessly squash the literal life-giving qualities out of the music and programs.
The prevention of HL should please not cancel these long-awaited improvements and jeopardize music heritage further.
Conclusions
Mandatory requirements since 2013 (phase 1, 2)Limits are in concordance with latest researchDose estimation to reduce false warnings, to protect music heritage
Europe
Phase 1 and 2 implemented in IEC 62368-1, clause 10.6
IEC
No need for other international PMP standards on this issue
Well indicated to legislate on sound exposure in PMPs
References
End
EU Commission (2009). On the safety requirements to be met by European standards for personal music players pursuant to Directive 2001/95/EC.
S. G. Kujawa & M. C. Liberman (2009). Journal of Neuroscience. Adding Insult to Injury: Cochlear Nerve Degeneration after 'Temporary' Noise-Induced Hearing Loss.
B. Gourévitch et al. (2014). Nature Neuroscience. Is the din really harmless? Long-term effects of non-traumatic noise on the adult auditory system.
S. Gissel, J.T. Mortensen, S. Juul (2002). Int J Adolesc Med Health. Evaluation of hearing ability in Danish children at the time of school start and at the end of school.
D. Hammershøi et al. (2015). AES 58th Conference Paper. Dose Estimate by Personal Music Players Based on Weighted Output Voltage.
T. Lund (2015). AES 58th Conference Paper. Prevention of Hearing Loss from the use of Personal Media Players.
J. Tønnesvang et al. (2015). Klim. The Four Quadrant Model.
EN50332-1, 2, 3; EN62368-1; ITU-R BS.1770; EBU R128