Re: Non-linearity of the human ear
I am one of those of advanced years with hearing loss. The last test I had indicated that my middle frequency hearing was fairly normal but the top response had dropped off considerably, although its still there because I can hear a 10khz tone if its loud enough.
What causes the hearing problem is not being able to hear the sibilance so I miss hear words that start with 'Fs, Ss anf Ts particularly.
I was a TV engineer for 50 years which in the early days was 405 lines, 10.125 kHz and it was deafening to me then, I became so accustomed to it that I could adjust the line hold to frequency then plug the aerial in and the picture would be locked. I could hear if the TV in a house was on outside the front door. I now have tinnitus which sounds like being in a shop full of 405 line TVs - quite nostalgic really.
Peter
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