Frequency hearing drop Options

[eahm]

"Hello doctors/experts,"

I read that the ability to hear high frequency sounds drops with time and age and I am aware that we have a range and I also saw graphs and documents about it.

My concern is about how the drop appears, does it change from where one lives? How much and how fast can the time/age drop? Does it depend to humidity? Weather (too cold, too warm)? Altitude? Bad habits (alcohol/beer, whisky etc., smoking/cigars etc.)? Most important, fatigue/not to much sleep (and probably still related to the weather being too warm)?

I am 30, can it be temporary and go back up during winter?

It's not a matter of life and death, I actually don't really care, the music is still good to me and if age does this it's ok but I was able to hear up to 17Khz let's say 5-6 months ago and now only up to 13Khz. Here in Phoenix 5-6 months ago was cooler than this very hot summer that's why I'm asking about the weather possibility. I've been in Arizona 6 years but I am not from here, I am from a small mountain town from the center-north of Italy, I have no idea what the desert can do to a person.

If anyone can answer, thanks.

This post has been edited by eahm: Sep 11 2012, 03:06

[eahm]

Thank greynol, I'll look into that as well!

I don't know how accurate the iPhone mic may be but when the A/C is on and the door is open the SPL meter tells me the noise is 63-64dB with the door open and 54-55dB with the door closed.
Tested with:
The Real SPL Meter and Logitech UE SPL

Now, this one (Studio Six Digital SPL Meter) that is supposed to be "professional" gives me 51dB with the door open and 41dB with the door closed.

Can anyone with a professional SPL Meter and an iPhone 4S test which one is most accurate? Not just for me, everyone would like to know I guess.

This post has been edited by eahm: Sep 11 2012, 05:13