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Old January 8, 2014, 04:07 PM   #21
Brian Pfleuger
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Join Date: June 25, 2008
Location: Austin, CO
Posts: 19,436
Mid-range (3-4k hertz) tends to go first but it doesn't tend to go farthest. High-frequencies go the largest amounts and the most often. I spent some time selling hearing aides. The average hearing test graph becomes familiar very quickly. It is typically flat to slightly sloped down through about 2k hertz, slopes down slightly more between 3 and 8k hertz and drops like a rock after 8k. By far, the most common severe loss is the highest frequencies.
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