In message <[email protected]>, dated Tue, 17 Jul 2007, "Tyra, John" <[email protected]> writes:
>Does anyone have any information on European Legislation regarding >sound pressure levels for headphones? > >All I have been able to find is a French Legislation which mandates >100db for a 150mV input. I don't know about the 150 mV, but the 100 dB SPL is right. >The legislation refers to the following standards for measurement. EN >50332-1 and EN50332-2 Yes: the French started this stunt several years ago - steamrollered it through CENELEC and then found that without a Directive to back it up, it was useless. There can't be a Directive, because the EU can't legislate on public health matters (RoHS scrapes through because workers could be exposed to toxins). But then they found that the Low Voltage Directive includes 'radiation', which was originally X-rays from CRTs by has been interpreted to cover all 'radiation', not only EMF but sound as well! The whole concept is technically unsound. There is a pressure-group in the Netherlands trying to get those ENs called up in EN 60065 and EN 60950, so compliance would become compulsory. So far, they haven't won. In UK, we think that the effects of ALL loud sounds need to be brought to public attention, and people taught to avoid them. Clubs and noise at work are **at least** as significant as personal players. See, for example: http://www.acousticsafety.org/? http://www.dontlosethemusic.com/home/ -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk There are benefits from being irrational - just ask the square root of 2. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
