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2 questions about sound volume - Page 2

post #16 of 19
Thread Starter 

Thank you ab initio, xnor, anetode & skamp.


Thanks a million sir for all of your help. I now know that I'm listening to headphones in safe volumes and its a great relief for me who is just at the beginning of hearing of the sounds of the world and needs his ears at least for 50 years & it was impossible without your help.


Thanks again for your instructions. I, as you said, will slowly raise the volume to find the most appropriate (and safe) volume, but I wouldn't pass 50% of volume control at no case.

post #17 of 19
You can listen to certain volumes for a certain lenght of time without damaging your hearing.

You can crank it up once in a while it won't make yoz deaf. But not full blast for 6 hours. Rock concert? Earplugs for me.

Damage can come from short durations at high volumes too, hold your ear next to a gun firing without hearing protection, a fire trucks horn, et cetera. Seconds can do irreversible damage.
post #18 of 19

Yes and all those limits are per day. So loud traffic noise, or commuting on a bus which can be quite noisy will decrease the time you can/should listen to music at a given SPL.

post #19 of 19

(Sorry... I just made this even more complicated)


Anyway. There is the issue that what matters ultimately to your health is the intensity of the sound that reaches your eardrum.


Speaker guys, and people for OSHA who deal with sound from jackhammers, aircraft engines, and screaming babies, have it so much easier as they don't have to worry about measuring the delivery efficiency like you do when the sound source is so near to you. Scientific gobbltygook coming up. 


An DT880 is so inefficient at delivering the actual vibrations to your hears (or any other open headphone, for example) that the damage for a given "dB" output will be comparatively less than if you put out the same dB in an IEM. 


The dB quoted in the specs are the total sound output measured at some distance (no clue what that is), not what reaches your ears..


To figure out what becomes dangerous (if you want to be really scientific) you need this ridiculous yet awesome thing, with the microphones inside the "ears."

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