John Woodagate wrote: >> The reason is that there are MANY ways to damage your hearing and playing a CD player too loud is just one. Also, we don't have any evidence that a significant number of people DO play them too loud. The <<
Leaving aside whether there is indeed a need for such a limit... It seems to me that the only way to reliably limit the sound pressure applied to eardrums is to require a physical limit on the amount of air an *earphone* can move. Without knowing the acoustic efficiency of whatever transducer a user has, it is difficult, and perhaps impossible, to do so at the electronics end. Cortland Richmond KA5S - 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 emc-p...@ieee.org 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 emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
