"At 80 dB(A) exposure time shall be limited to 40 hours/week, whereas at 89 dB(A) exposure time shall be limited to 5 hours/week. For other exposure levels a linear intra- and extrapolation applies."
I'll put this here for others to check while I do the rest of the design: maximum time per week = a function of volume 40 h = f(80 dB(A)) 5 h = f(89 dB(A)) linear intra- and extrapolation ∴ maximum time per week = m × volume + c m = (40h – 5h) ÷ (80 dB(A) – 89 dB(A)) = 35 h ÷ –9 dB(A) = –3.889 h/dB(A) 40h = –3.889 h/dB(A) × 80 dB(A) + c c = 40h – (–3.889 h/dB(A) × 80 dB(A)) = 351.111 h ∴ maximum time per week = –3.889 h/dB(A) × volume + 351.111 h. A quick graph of this formula looks right, at least. ** Attachment added: "graph of the formula" https://bugs.launchpad.net/ubuntu-ux/+bug/1373404/+attachment/4220266/+files/EU%20volume%20limits%20graph.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1373404 Title: No warning of high volume level To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-ux/+bug/1373404/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
