I can hear below 10Hz - am I abnormal? 2018-06-25 10:08:41 I often read that the limits of human hearing is 20Hz–20kHz. To me, this "fact" seems quite ridiculous.Surely everyone can hear tones below 20Hz? The buzz of machines like refrigerators? The hum of traffic? Airplanes, etc? Most urban areas are saturated with these irritating frequencies, and I hear them all day long. Am I really so unusual?If I play 20Hz in Audacity, it's very loud, clear, and easily perceived. It fades in strength as I go down through the teens, down to 9Hz, which is feint, but I can definitely still hear it. I wasn't able to hear 8Hz, but I was listening in a noisy environment and haven't done much testing. Plus, my ears are pretty blocked up with wax and I have tinnitus, so I wouldn't say my hearing was good anyway.At the upper end, I can't hear much above 10Hz. So to me, the claim that humans can hear 20Hz–20kHz seems perfectly correct if you halve it!