CENELEC Technical Committee 108X on ‘Safety of electronic equipment within the fields of Audio/video, Information Technology and Communication Technology’ was tasked to take the execution of the mandate on board. The work was performed by a dedicated working group with representatives and experts from market surveillance authorities, consumer interest organisations, research institutes, certification bodies and manufacturers.
The exercise resulted in the issuing of 2 amendments to already existing standards for ‘Safety of audio, video and similar electronic apparatus’ and 'Safety of information technology equipment', which passed a formal vote by the National Standardisation Committees at the end of 2010.
The approach adopted in the standard is based on a sound level limit of 85 dBA. This is a sound level that is considered to be safe under all reasonable foreseeable conditions of use. There is the possibility however for the user to choose to override the limit so that the sound level can be increased up to a maximum of 100 dBA. In this case the user has to be provided with warnings about the risks which are repeated following each 20 hours of listening time.
After publication of the amendments in early 2011, a transition period of 24 months will follow, during which the standard will be implemented at national level by the publication of national standards. By the end of the transition period, industry should have started to apply the standard to their products.
In the meantime, the working group is expected to continue with the next step of the mandated work, which is the development of "smart" methods of providing protection against excessive sound pressure levels from personal music players based on the measurement of sound dose.
Brussels, Belgium, 2011-02-09
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