touch-packages team mailing list archive

[kevin gunn <kevin.gunn@xxxxxxxxxxxxx>]

based on the specification that's been provided it would seem that the audio subsystem would need to be involved for 
"measuring dB output" as this will always be a potential driven by a combination of sw & hw (e.g. sound subsystem needs to provide a means of reporting dB per volume setting)

also, for the warning notifications u-s-s would need to be involved.

** Also affects: pulseaudio
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1373404

Title:
  No warning of high volume level

Status in Ubuntu UX bugs:
  Fix Committed
Status in “pulseaudio” package in Ubuntu:
  New
Status in “ubuntu-system-settings” package in Ubuntu:
  New
Status in “unity8” package in Ubuntu:
  Confirmed

Bug description:
  The EU has a legal requirement for personal music players to prevent hearing damage.
  http://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32009D0490&rid=1
  ____________

  For the purpose of this Decision, a ‘personal music player’ means a
  portable device, that is not covered by Directive 1999/5/EC or
  Directive 2006/95/EC, with headphones or earphones, used to listen to
  recorded, generated or broadcasted sound.

  1. For the purpose of Article 4(1)(a) of Directive 2001/95/EC, the
  safety requirement for personal music players shall be the following:
  Personal music players shall be designed and manufactured in a manner
  that ensures that, under reasonably foreseeable conditions of use,
  they are inherently safe and do not cause hearing damage.

  2. The requirement set out in paragraph 1 shall include in particular
  the following:

  (1) Exposure to sound levels shall be time limited to avoid hearing
  damage. 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.
  Account shall be taken of the dynamic range of sound and the
  reasonably foreseeable use of the products.

  (2) Personal music players shall provide adequate warnings on the risks involved in using the device and to the ways of avoiding them and information to users in cases where exposure poses a risk of hearing damage.
  ____________

  Related documents:
  http://ec.europa.eu/health/opinions/en/hearing-loss-personal-music-player-mp3/
  http://europa.eu/rapid/press-release_IP-08-1492_en.htm
  http://ec.europa.eu/news/environment/090928_en.htm
  http://europa.eu/rapid/press-release_IP-09-1364_en.htm

  Design:

  <https://wiki.ubuntu.com/Sound#limits>: "Whenever you are using
  headphones, Ubuntu should frequently measure the volume of sound
  output. Whenever it is over 47 dB(A), your quota should be reduced
  accordingly..."

  [Originally reported in private bug 1370591.]

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