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A couple questions
Sat, 06/05/2010 - 22:11
Just a couple questions:
What is the main differences between gain and volume?
What does MPO mean? Is it just the same as compression?
What is PC, attack and release time compression?
What adjustment should be made if the sound is thin and sharp and sometimes too sharp to even hear people's voice?
Tue, 07/27/2010 - 16:39
#2
Here is another quick question:
Even without experiencing pressure changes such as scuba diving and flying, I feel pressure in my ear which makes it hard to hear. My friend had told me that pinching my nostrils and inflating my cheeks helps alter the air pressure in my ear. I do not want to do this every time I experience this feeling which could be quite often. Any advice?
Tue, 07/27/2010 - 16:40
#3
It is called a eustacian tube disfunction. Go see a local Otolarangologist and they will give you a nose spray that could help the problem.
Heres a go at it:
Gain is the amount of "boost" applied to a certain part of the audiogram. You would add 40db of gain to a certain band because you have 40 db of loss there. You would add a different amount of gain to different part of the audiogram based on loss. The gain might be different for each frequency band. These bands allow the hearing aid to specifically compensate for losses at certain frequencies.
Volume on the other hand, has to do with the final output of the hearing aid or all of the frequency bands together (similar to the volume control on your radio). Volume doesn't change the way something sounds, it adjusts making it louder or softer.
MPO stands for Maximum Power Output. Itss the absolute loudest your hearing aid can go.
PC stands for Peak Clipping. The hearing aid can "clip" the tops or peaks off the sound waves when sudden input sounds are too loud so that your hearing isn't damaged, or to prevent discomfort. This clipping lowers the volume, but can also add distortion to the sound. I think this is what causes a kind of "buzzing" sound to voices when they get too loud. Not all the way posotive about that last part.
I'm not sure about the last question, but I'd guess that there is too much high frequency gain. Are the hearing aids new for you? Aside from not being able to understand voices, that's a fairly common complaint new hearing aid wearers have.