QUOTE (hermit @ Jun 23 2010, 06:49 AM)
I envy your good hearing. Usually, these frequencies are beyond human perception.
Flourescent lights are my bane. I can see the flicker of 60 hz line power in them. One of my daughters can see refresh rates up to 85 hz as a flickering screen without issue though she can see it on some CRTs as high as 100 hz.
My ability to see screen refresh stops around 75hz.
Also went and got an audiogram done about a year or so ago. Was concerned about hearing loss.
After the test, the audiologist told me the results. I basically have hearing that is 20db **better** than the normal person except in one range (human voice) which is slightly better than average. When I told him how old I was, he was stunned. He had never seen results from a person in their early 30s with hearing so significantly good. He said those kinds of results are (typical in his experience) from people in their early teens.
But with my hearing like it is, I can usually tell if something electronic is getting ready to fail because it starts making noises I can hear before anyone else can.