Below is a good YouTube video demonstrating how the progressive high frequency hearing loss can affect a person’s ability to understand speech. Notice how speech intelligibility deteriorates further and further as a person loses more and more of the high frequencies. High frequency hearing loss related to noise exposure and/or aging often progresses so slowly that the person with the impairment is not aware. Their family and friends usually notice the problem before the person with the loss. People with high frequency hearing loss will respond inappropriately because they misunderstand what is said. These people sometimes begin to withdraw from various social situations because they cannot hear properly. Significant others often think that their family member or friend may be suffering from dementia because they sometimes give a very unexpected response.
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