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#1
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Hearing loss
wrote in message
... but that is because I am getting old.Sometimes I hear a swishing noise in my ears Its ur ****ing brains sloshin around your skull ya ancient old ******* ! LOL Just joshin with ya! |
#2
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Hearing loss
Since many of in this group will use earphones it might be usefull to
limit the damage to our hearing that could be cuased by overly load audio blasting into our ears. Since I already have some minor loss in the 8KHz and up, I try to guard my hearing from further damage. The last thing I need is more loss to further limit my ability to understand signals lost in the noise. http://headwize.com/articles/hearing_art.htm I use a modified version of the clipper shown in diagram 9 at http://headwize.com/projects/cmoy2_prj.htm For my pruposes I use the following values: P1=1 K ohm P2=1K ohm R1=1K ohm R2, not present , a direct connection to the diodes. And I use 2 parallel sets of Si diodes in series to give a max voltage of +/-1.4V. This corresponds to a maximum sound level of 98dB with my anceint Sennheiser HD-424. While safe for short periods, 96dB causes me to simply get tired after an hour or so, so I can rdeuce the level with P2 to a more comfortable point. I also have the ability to switch a transformer to allow receivers with less AF voltage to be used. I choose to use a 70V, as in "constant voltage", transformer to boast the common 8 Ohms to 500 Ohms. I used the largest transfomrer I could find to reduce distortion that can be caused by too little iron in the core. I wanted the protection to be the last step before the earphones in case my amplifeir fires or I feed too strong a signal. The clipper" also helps when listening during the summer by clamping the lightning crashes to a more reasonable level. Terry |
#4
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Hearing loss
John S. wrote: I probably do not understand much about your project. But wouldn't the simple solution be to just use the AF gain judiciously? To start at a low setting and increase only to the level needed. Yes. If you can be certain to never mess up. I am experimenting with several different detectos, filters and audio amps. Very easy to mess up and get very loud pops, squals and other unpleasent shocks. That, plus the fact that when trying to dig out a weak station I turn the volume up and when someone nerby turns on a light, or that nasty flood blender also causes very loud pops etc. By having the limiter the last thing before my earphones I insure that simple mistakes won't hurt. Terry |
#5
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Hearing loss
On 24 Aug 2006 07:38:25 -0700, wrote:
John S. wrote: I probably do not understand much about your project. But wouldn't the simple solution be to just use the AF gain judiciously? To start at a low setting and increase only to the level needed. Yes. If you can be certain to never mess up. I am experimenting with several different detectos, filters and audio amps. Very easy to mess up and get very loud pops, squals and other unpleasent shocks. That, plus the fact that when trying to dig out a weak station I turn the volume up and when someone nerby turns on a light, or that nasty flood blender also causes very loud pops etc. By having the limiter the last thing before my earphones I insure that simple mistakes won't hurt. Terry http://www.musiciansfriend.com/produ...sor?sku=182472 |
#6
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Hearing loss
I always keep my radios and tv sets turned down lowwww.(I hate earphones
and earbuds,I never use them) I have ear tintinitus, (however it is spelled?) but that is because I am getting old.Sometimes I hear a swishing noise in my ears. cuhulin |
#7
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Hearing loss
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#8
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Hearing loss
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#9
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Hearing loss
Isn't that,maybe the beer I drink does it to my ears.My little doggy
only drinks fresh tap water,(and eats Natural Choice dog food www.nutroproducts.com $20.00 per twenty pound bag and every eleventh bag is free,and I always save a few spoonfulls of whatever I eat for her and let her clean the plate) I change the water out several times every day.And she isn't a stupid French poodle dog. cuhulin |
#10
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Hearing loss
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