Preventing Hearing loss

Discussion in 'General Audio Discussion' started by Madaboutaudio, Sep 5, 2016.

  1. Madaboutaudio

    Madaboutaudio Friend

    Friend
    Joined:
    Sep 28, 2015
    Likes Received:
    574
    Dislikes Received:
    9
    Trophy Points:
    93
    Location:
    Singapore
    Last edited: Sep 5, 2016
  2. spwath

    spwath Collegiate hijinks master

    Friend BWC
    Joined:
    Dec 13, 2015
    Likes Received:
    4,989
    Dislikes Received:
    26
    Trophy Points:
    113
    Location:
    Hartford, CT
    I dont think thats a very helpfull chart.
    I could listen for many hours at 100% of my phone with an HE-6, but less than 18 minutes with a efficient one.
     
  3. Armaegis

    Armaegis Friend

    Friend BWC
    Joined:
    Sep 27, 2015
    Likes Received:
    3,809
    Dislikes Received:
    2
    Trophy Points:
    113
    Location:
    Winnipeg
    Part of the problem is not specifically that people listen too loudly, it's that they try to fight noise with more noise on top. This is where stock/cheap earbuds are particularly dangerous, because they offer no isolation at all so people "turn it up" to hear their music.
     
  4. atomicbob

    atomicbob dScope Yoda

    Friend BWC MZR
    Joined:
    Sep 27, 2015
    Likes Received:
    10,772
    Dislikes Received:
    4
    Trophy Points:
    113
    Location:
    On planet
    Good sentiment to practice safe listening habits.

    That chart applies ONLY to the apple iPod. Percent Volume translation to voltage / power output is not consistent among the many amplifiers available. What is needed is a deeper understanding of:

    Amplifier output levels as a function of the volume knob
    Headphone sensitivity
    Safe sound level exposure times
    Method for measuring a specific DAC / Amp / Headphone combination

    Here are some useful links:

    Headphone sensitivity
    http://www.superbestaudiofriends.or...tem-synergy-special-sound.54/page-2#post-4328

    Safe sound level exposure times
    https://blogs.cdc.gov/niosh-science-blog/2016/02/08/noise/
    http://www.nonoise.org/hearing/criteria/criteria.htm

    DIY headphone SLM
    http://home.hccnet.nl/joop.nijenhuis/headwize/hpdbmtre.htm
     
    elguapo and landroni like this.
  5. Kunlun

    Kunlun cat-alyzes cat-aclysmic cat-erwauling - Friend

    Friend IEMW
    Joined:
    Sep 26, 2015
    Likes Received:
    5,064
    Dislikes Received:
    1
    Trophy Points:
    113
    Location:
    Meow Parlour
    Here's the chart I use:

    NIOSH standards are more recent and based on updated research:

    [​IMG]

    This is a hugely important issue.

    On the Pro-music front, here are my thoughts from looking at two pro-audio companies:

    Isolation is a big factor, BUT it's been found that people wearing isolating earphones still turn up the volume past level that are healthy. Sensaphonics, which is basically a hearing protection company cosplaying as a major pro-music stage monitor company (Taylor Swift and Beyonce use them), has changed their methodology due to this. They now have a hearing protection seminar where they have a stage on their grounds and have musicians in a live music environment and train them to turn the volume down to levels where they can hear everything and not go deaf.

    On the other side is Future Sonics, where the idea was isolation, but much more important was giving real air-moving bass feel as they found early on that musicians were turning the volume way up on armature iems to make up for that bass feel they weren't getting. So, they felt vented dynamic drivers were the way to go, still providing isolation, but now giving some bass so the music would stay lower. Most hearing loss occurs in the upper freguencies, but, of course, you do see lower frequency loss sometimes (not just volume, some meds can cause hearing loss). It's arguable which idea is better, but Sensaphonics has the right idea in that no matter what, people need to be aware of what volume they really need or they will turn it up too much.

    Oh, one last thing. A while back I was reading somewhere that some people have ears that are extra easy to damage, and a few lucky folks have an auditory system that is more resilient, so these charts should be read with care. Better to under-do than permanently wreck your hearing.
     
    Boops, elguapo, Olor1n and 3 others like this.
  6. Madaboutaudio

    Madaboutaudio Friend

    Friend
    Joined:
    Sep 28, 2015
    Likes Received:
    574
    Dislikes Received:
    9
    Trophy Points:
    93
    Location:
    Singapore
  7. Madaboutaudio

    Madaboutaudio Friend

    Friend
    Joined:
    Sep 28, 2015
    Likes Received:
    574
    Dislikes Received:
    9
    Trophy Points:
    93
    Location:
    Singapore
  8. Psalmanazar

    Psalmanazar was: dingleberry; now: chill + interesting

    Slaytanic Cliff Clavin
    Joined:
    Sep 27, 2015
    Likes Received:
    3,286
    Dislikes Received:
    111
    Trophy Points:
    113
    Do not shoot guns. Avoid pets and children.
     
  9. Madaboutaudio

    Madaboutaudio Friend

    Friend
    Joined:
    Sep 28, 2015
    Likes Received:
    574
    Dislikes Received:
    9
    Trophy Points:
    93
    Location:
    Singapore
    Thad E Ginathom likes this.
  10. Thad E Ginathom

    Thad E Ginathom Friend

    Friend
    Joined:
    Sep 27, 2015
    Likes Received:
    6,633
    Dislikes Received:
    11
    Trophy Points:
    113
    Location:
    India
    Never ever be in those live-music situations where your ears ring and/or you can't hear ordinary sounds when you come out.

    I say never ever --- but it is probably too late for most people who have ever been to a rock/etc concert, because those sort of volumelevels are the norm, even though some countries may have health and safety regulation. Actually, the regulations imposed on concert/festival organisers are probably more to do with the neighbours than they are with protecting the audience or the participants.

    I agree that "bad" sound seems to hurt more. Is that a medical fact, or is it our audiophile sensitivities? I don't know: I suspect it is probably pure decibels (of the appropriate kind) that counts, rather than the quality.
     
    Lyander, ultrabike and Madaboutaudio like this.
  11. Thad E Ginathom

    Thad E Ginathom Friend

    Friend
    Joined:
    Sep 27, 2015
    Likes Received:
    6,633
    Dislikes Received:
    11
    Trophy Points:
    113
    Location:
    India
    What really pisses me off is that I regularly attend concerts which are vocal plus acoustic instruments, but some idiot with an amplifier thinks the volume has to be like rock.

    The levels are not quite enough for real plugs, which also block too much high frequency: I carry a packet of cotton wool.
     
  12. Madaboutaudio

    Madaboutaudio Friend

    Friend
    Joined:
    Sep 28, 2015
    Likes Received:
    574
    Dislikes Received:
    9
    Trophy Points:
    93
    Location:
    Singapore
    @Thad E Ginathom

    Not sure if this works or not:
    Binaural Beats for hearing loss
     
    Thad E Ginathom likes this.
  13. LauriCular

    LauriCular Acquaintance

    Joined:
    Feb 19, 2016
    Likes Received:
    65
    Dislikes Received:
    1
    Trophy Points:
    18
    I seem to have self-regulating ears, I might pop headphones on for a session and start with a track I'm currently into so the volume is relatively high. But then, after a few minutes my ears are telling me to turn it down and it goes lower and lower. Much like those charts.
     
  14. Madaboutaudio

    Madaboutaudio Friend

    Friend
    Joined:
    Sep 28, 2015
    Likes Received:
    574
    Dislikes Received:
    9
    Trophy Points:
    93
    Location:
    Singapore
  15. Thad E Ginathom

    Thad E Ginathom Friend

    Friend
    Joined:
    Sep 27, 2015
    Likes Received:
    6,633
    Dislikes Received:
    11
    Trophy Points:
    113
    Location:
    India
    Thank you! It can do no harm to take a look. Miracles not expected, but that's no reason not to try stuff.

    There are certainly different ways of perceiving sound. Evelyn Glennie was completely deaf [I think], even before she studied music, yet she not only did so, but became a successful top orchestral percussionist. She's famous for having done the "impossible," and for her talks on doing it --- which she also does very well.
     
  16. Deep Funk

    Deep Funk Deep thoughts - Friend

    Friend
    Joined:
    Sep 27, 2015
    Likes Received:
    10,027
    Dislikes Received:
    11
    Trophy Points:
    113
    Location:
    South of Amsterdam, near The Hague.
    Home Page:
    This!

    This is the reason why I demand my portable headphones to properly isolate. No proper isolation, home use only. Traffic in Amsterdam requires my full attention.
     
    elguapo and Wilson like this.
  17. TwoEars

    TwoEars Friend

    Friend
    Joined:
    Feb 2, 2016
    Likes Received:
    2,210
    Dislikes Received:
    102
    Trophy Points:
    113
    I highly recommend the shure in-ears for this very reason. They have the noise isolating foam tips and you don't have to turn them up so high to hear the music.

    [​IMG]

    I also recommend getting some earplugs designed for concerts. Like these ones: http://www.earproof.com/en/shop/genericearplugs/earproof-silver-10db/

    You can get them in 10, 15 or 20 dB versions and they really do work. Let's say you're at a concert and you manage to bring the volume level down from 100dB to 85dB over a 2 hour period. That's the difference between safe and not safe:

    [​IMG]
     
  18. Madaboutaudio

    Madaboutaudio Friend

    Friend
    Joined:
    Sep 28, 2015
    Likes Received:
    574
    Dislikes Received:
    9
    Trophy Points:
    93
    Location:
    Singapore
    The most isolating iem I have encountered is still the etymotic er4 with triple flange tips. They block out the most external noise but the cable is pretty microphonic but can be migiated by hooking over ears.

    Also has anyone tried the Bose noise cancelling headphones? Are they good at blocking noise and how's the sound quality?
     
  19. Deep Funk

    Deep Funk Deep thoughts - Friend

    Friend
    Joined:
    Sep 27, 2015
    Likes Received:
    10,027
    Dislikes Received:
    11
    Trophy Points:
    113
    Location:
    South of Amsterdam, near The Hague.
    Home Page:
    The Bose technology works. Thing is, you pay a premium for the brand and some Bose products simply fall apart after a while.

    I usually go for pro-audio gear instead of consumer audio gear when the budget allows it. Check your budget and audition...
     
  20. TwoEars

    TwoEars Friend

    Friend
    Joined:
    Feb 2, 2016
    Likes Received:
    2,210
    Dislikes Received:
    102
    Trophy Points:
    113
    The latest version is excellent in both sound and noise blocking, but I don't like dealing with the batteries. With noise isolating in-ears there are no batteries and they are smaller and more portable too.
     
    Madaboutaudio likes this.

Share This Page